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Siemens SITRANS P. Operating Instructions (2019) - page 6

Technical data

13.1 Input

Gauge pressure measuring limits

● Measuring cell with inert oil

30 mbar a/3 kPa a/0.44 psi a

● Measuring cell with FDA-compliant oil

100 mbar a/10 kPa a/1.45 psi a

Upper measuring limit

100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/

1450 psi and 60 °C ambient temperature/medium temperature)

Lower range value

Between the measuring limits (continuously adjustable)

¹⁾ For devices with functional safety, the minimum permissible measuring span is limited by the

spread. Therefore, ensure that the configured spread is no higher than 5:1.

²⁾ For 250 mbar/25 kPa/3.6 psi measuring cells, the low measuring limit is 750 mbar a/75 kPa a/

10.8 psi a. The measuring cell is vacuum-tight down to 30 mbar a/3 kPa a/0.44 psi a.

13.1.2

Gauge pressure with front-flush diaphragm

Gauge pressure input with front-flush diaphragm

Measured variable

Gauge pressure

Measuring span (continuous-

Measuring span¹⁾

Maximum permissible

Maximum test

ly adjustable) or measuring

operating pressure MAWP

pressure

range, max. operating pres-

(PS)

sure and max. test pressure

0.01 … 1 bar

Refer to the information on the nameplate of the pressure

transmitter and the data on the mounting flange²⁾

1 ... 100 kPa

0.15 … 14.5 psi

0.04 … 4 bar

4 ... 400 kPa

0.58 … 58 psi

0.16 … 16 bar

0.016 ... 1.6 MPa

2.3 … 232 psi

0.6 … 63 bar

0.063 ... 6.3 MPa

9.1 … 914 psi

¹⁾ For devices with functional safety, the minimum permissible measuring span is limited by the

spread. Therefore, ensure that the configured spread is no higher than 5:1.

²⁾ The MAWP value of the pressure transmitter can be lower than the PN value of the mounting

flange and vice versa. To determine the maximum permissible operating pressure and the

maximum permissible test pressure, use the lowest value as reference.

Gauge pressure measuring limits with front-flush diaphragm

Lower measuring limit

● Measuring cell with silicone oil filling

100 mbar a/10 kPa a/1.45 psi a

● Measuring cell with inert oil

100 mbar a/10 kPa a/1.45 psi a

SITRANS P320/P420 with 4 to 20 mA/HART

200

Technical data

13.1 Input

Gauge pressure measuring limits with front-flush diaphragm

● Measuring cell with FDA-compliant oil

100 mbar a/10 kPa a/1.45 psi a

Upper measuring limit

100% of max. range

13.1.3

Gauge pressure from the differential pressure series

Gauge pressure input from the differential pressure series

Measured variable

Gauge pressure and differential pressure

Measuring span (continuous-

Measuring span¹⁾

Maximum permissible

Max. permissible

ly adjustable) and maximum

operating pressure

test pressure

operating pressure (accord-

MAWP (PS)

ing to 2014/68/EU Pressure

1 ... 20 mbar

160 bar

240 bar

Equipment Directive)

0.1 ... 2 kPa

16 MPa

24 MPa

0.4015 … 8.031 inH₂O

2320 psi

3480 psi

1 ... 60 mbar

160 bar

240 bar

0.1 ... 6 kPa

16 MPa

24 MPa

0.4015 … 24.09 inH₂O

2320 psi

3480 psi

2.5 ... 250 mbar

160 bar

240 bar

0.2 ... 25 kPa

16 MPa

24 MPa

1.004 … 100.4 inH₂O

2320 psi

3480 psi

6 ... 600 mbar

160 bar

240 bar

0.6 ... 60 kPa

16 MPa

24 MPa

2.409 … 240.9 inH₂O

2320 psi

3480 psi

16 ... 1600 mbar

160 bar

240 bar

1.6 ... 160 kPa

16 MPa

24 MPa

6.424 … 642.4 inH₂O

2320 psi

3480 psi

50 ... 5000 mbar

160 bar

240 bar

5 ... 500 kPa

16 MPa

24 MPa

20.08 … 2008 inH₂O

2320 psi

3480 psi

0.3 … 30 bar

160 bar

240 bar

0.03 ... 3 MPa

16 MPa

24 MPa

4.35 … 435 psi

2320 psi

3480 psi

5 … 100 bar

160 bar

240 bar

0.5 ... 10 MPa

16 MPa

24 MPa

76.9 … 1450 psi

2320 psi

3480 psi

¹⁾ For devices with functional safety, the minimum permissible measuring span is limited by the

spread. Therefore, ensure that the configured spread is no higher than 5:1.

Gauge pressure measuring limits from differential pressure

series

Lower measuring limit

● Measuring cell with silicone oil filling

30 mbar a/3 kPa a/0.44 psi a

SITRANS P320/P420 with 4 to 20 mA/HART

201

Technical data

13.1 Input

Gauge pressure measuring limits from differential pressure

series

● Measuring cell with inert oil

30 mbar a/3 kPa a/0.44 psi a

● Measuring cell with FDA-compliant oil

100 mbar a/10 kPa a/1.45 psi a

Upper measuring limit

100% of max. range (for oxygen measurement: max. 100 bar/

10 MPa/1450 psi and 60 °C ambient temperature/medium

temperature)

Lower range value

Between the measuring limits (continuously adjustable)

13.1.4

Absolute pressure from the gauge pressure series

Absolute pressure input from the gauge pressure series

Measured variable

Absolute pressure

Measuring span (continuous-

Measuring span¹⁾

Maximum permissible

Maximum test

ly adjustable) or measuring

operating pressure MAWP

pressure

range, max. operating pres-

(PS)

sure (in accordance with

8.3 … 250 mbar a

4 bar a

6 bar a

2014/68/EU Pressure Equip-

0.83 ... 25 kPa a

0.4 MPa a

0.6 MPa a

ment Directive) and max. test

pressure (in accordance with

3 … 100 inH₂O a

58 psi a

87 psi a

DIN 16086)

43 … 1300 mbar a

6.6 bar a

10 bar a

4.3 ... 130 kPa a

0.66 MPa a

1 MPa a

17 … 525 inH₂O a

95 psi a

145 psi a

166 … 5000 mbar a

20 bar a

30 bar a

16.6 ... 500 kPa a

2 MPa a

3 MPa a

2.41 … 72.5 psi a

290 psi a

435 psi a

1 … 30 bar a

65 bar a

100 bar a

0.1 ... 3 MPa a

6.5 MPa a

10 MPa a

14.5 … 435 psi a

942 psi a

1450 psi a

5.3 … 160 bar a

240 bar a

380 bar a

0.53 ... 16 MPa a

24 MPa a

38 MPa a

77 … 2321 psi a

3480 psi a

5511 psi a

13.3 … 400 bar a

400 bar a

600 bar a

1.3 ... 40 MPa a

40 MPa a

60 MPa a

192 ... 5801 psi a

5801 psi a

8702 psi a

23.3 … 700 bar a

800 bar a

800 bar a

2.3 ... 70 MPa a

80 MPa a

80 MPa a

337 ... 10152 psi a

11603 psi a

11603 psi a

SITRANS P320/P420 with 4 to 20 mA/HART

202

Technical data

13.1 Input

1)

For devices with functional safety, the minimum permissible measuring span is limited by the

spread. Therefore, ensure that the configured spread is no higher than 5:1.

Absolute pressure measuring limits from

gauge pressure series

Lower measuring limit

● Measuring cell with silicone oil filling

0 mbar a/kPa a/psi a

● Measuring cell with inert oil

For process temperature

30 mbar a/3 kPa a/0.44 psi a

-20 °C < ϑ ≤ 60 °C (-4 °F < ϑ

≤ +140 °F)

For process temperature

30 mbar a + 20 mbar a • (ϑ - 60 °C)/°C

60 °C < ϑ ≤ 100 °C (max.

3 kPa a + 2 kPa a • (ϑ - 60 °C)/°C

85 °C for measuring cell

0.44 psi a + 0.29 psi a • (ϑ - 140 °F)/°F

30 bar) (140 °F < ϑ ≤ 212 °F

(max. 185 °F for measuring

cell 435 psi))

Upper measuring limit

100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/

1450 psi and 60 °C ambient temperature/medium temperature)

Lower range value

Between the measuring limits (continuously adjustable)

13.1.5

Absolute pressure with front-flush diaphragm

Absolute pressure with front-flush diaphragm

Measured variable

Absolute pressure

Measuring span (continuous-

Measuring span¹⁾

Maximum permissible

Maximum test

ly adjustable) or measuring

operating pressure MAWP

pressure

range, max. operating pres-

(PS)

sure and max. test pressure

43 … 1300 mbar a

Refer to the information on the nameplate of the pressure

transmitter and the data on the mounting flange²⁾

4.3 ... 130 kPa a

17 … 525 inH₂O a

166 … 5000 mbar a

16.6 ... 500 kPa a

2.41 … 72.5 psi a

1 … 30 bar a

0.1 ... 3 MPa a

14.5 … 435 psi a

Depending on the process connection, the measuring span may differ from these values

¹⁾ For devices with functional safety, the minimum permissible measuring span is limited by the

spread. Therefore, ensure that the configured spread is no higher than 5:1.

SITRANS P320/P420 with 4 to 20 mA/HART

203

Technical data

13.1 Input

2)

The MAWP value of the pressure transmitter can be lower than the PN value of the mounting

flange and vice versa. To determine the maximum permissible operating pressure and the

maximum permissible test pressure, use the lowest value as reference.

Absolute pressure measuring limits with front-flush diaphragm

Lower measuring limit

● Measuring cell with silicone oil filling

0 mbar a/kPa a/psi a

Upper measuring limit

100% of max. range

Lower range value

Between the measuring limits (continuously adjustable)

13.1.6

Absolute pressure from the differential pressure series

Absolute pressure input from the differential pressure series

Measured variable

Absolute pressure

Measuring span (continuous-

Measuring span¹⁾

Maximum permissible

Max. permissible

ly adjustable) and maximum

operating pressure

test pressure

operating pressure (accord-

MAWP (PS)

ing to 2014/68/EU Pressure

8.3 … 250 mbar a

160 bar a

240 bar a

Equipment Directive)

0.83 ... 25 kPa a

16 MPa a

24 MPa a

3 … 100 inH₂O a

2320 psi a

3480 psi a

43 … 1300 mbar a

160 bar a

240 bar a

4.3 ... 130 kPa a

16 MPa a

24 MPa a

17 … 525 inH₂O a

2320 psi a

3480 psi a

166 … 5000 mbar a

160 bar a

240 bar a

16.6 ... 500 kPa a

16 MPa a

24 MPa a

2.41 … 72.5 psi a

2320 psi a

3480 psi a

1 … 30 bar a

160 bar a

240 bar a

0.1 ... 3 MPa a

16 MPa a

24 MPa a

14.5 … 435 psi a

2320 psi a

3480 psi a

5 … 100 bar a

160 bar a

240 bar a

0.5 ... 10 MPa a

16 MPa a

24 MPa a

76.9 … 1450 psi a

2320 psi a

3480 psi a

¹⁾ For devices with functional safety, the minimum permissible measuring span is limited by the

spread. Therefore, ensure that the configured spread is no higher than 5:1.

Absolute pressure measuring limits from dif-

ferential pressure series

Lower measuring limit

● Measuring cell with silicone oil filling

0 mbar a/kPa a/psi a

● Measuring cell with inert liquid

For process temperature -20 °C <

30 mbar a/3 kPa a/0.44 psi a

ϑ ≤ 60 °C (-4 °F < ϑ ≤ +140 °F)

SITRANS P320/P420 with 4 to 20 mA/HART

204

Technical data

13.1 Input

Absolute pressure measuring limits from dif-

ferential pressure series

For process temperature 60 °C < ϑ

30 mbar a + 20 mbar a • (ϑ - 60 °C)/°C

≤ 100 °C (max. 85 °C for measur-

3 kPa a + 2 kPa a • (ϑ - 60 °C)/°C

ing cell 30 bar) (140 °F < ϑ ≤ 212 °F

0.44 psi a + 0.29 psi a • (ϑ - 140 °F)/°F

(max. 185 °F for measuring cell

435 psi))

Upper measuring limit

100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/

1450 psi and 60 °C ambient temperature/medium temperature)

Lower range value

Between the measuring limits (continuously adjustable)

SITRANS P320/P420 with 4 to 20 mA/HART

205

Technical data

13.1 Input

13.1.7

Differential pressure and flow

Differential pressure input and flow

Measured variable

Differential pressure and flow

Measuring span (continuous-

Measuring span¹⁾

Maximum permissible

Max. permissible

ly adjustable) and maximum

operating pressure

test pressure

operating pressure (accord-

MAWP (PS)

ing to 2014/68/EU Pressure

1 ... 20 mbar

160 bar

240 bar

Equipment Directive)

0.1 ... 2 kPa

16 MPa

24 MPa

0.4015 … 8.031 inH₂O

2320 psi

3480 psi

1 ... 60 mbar

160 bar

240 bar

0.1 ... 6 kPa

16 MPa

24 MPa

0.4015 … 24.09 inH₂O

2320 psi

3480 psi

2.5 ... 250 mbar

160 bar

240 bar

0.2 ... 25 kPa

16 MPa

24 MPa

1.004 … 100.4 inH₂O

2320 psi

3480 psi

6 ... 600 mbar

160 bar

240 bar

0.6 ... 60 kPa

16 MPa

24 MPa

2.409 … 240.9 inH₂O

2320 psi

3480 psi

16 ... 1600 mbar

160 bar

240 bar

1.6 ... 160 kPa

16 MPa

24 MPa

6.424 … 642.4 inH₂O

2320 psi

3480 psi

50 ... 5000 mbar

160 bar

240 bar

5 ... 500 kPa

16 MPa

24 MPa

20.08 … 2008 inH₂O

2320 psi

3480 psi

0.3 … 30 bar

160 bar

240 bar

0.03 ... 3 MPa

16 MPa

24 MPa

4.35 … 435 psi

2320 psi

3480 psi

2.5 ... 250 mbar

420 bar

630 bar

0.25 ... 25 kPa

42 MPa

63 MPa

1.004 … 100.4 inH₂O

6091 psi

9137 psi

6 ... 600 mbar

420 bar

630 bar

0.6 ... 60 kPa

42 MPa

63 MPa

2.409 … 240.9 inH₂O

6091 psi

9137 psi

16 ... 1600 mbar

420 bar

630 bar

1.6 ... 160 kPa

42 MPa

63 MPa

6.424 … 642.4 inH₂O

6091 psi

9137 psi

50 ... 5000 mbar

420 bar

630 bar

5 ... 500 kPa

42 MPa

63 MPa

20.08 … 2008 inH₂O

6091 psi

9137 psi

0.3 … 30 bar

420 bar

630 bar

0.03 ... 3 MPa

42 MPa

63 MPa

4.35 … 435 psi

6091 psi

9137 psi

SITRANS P320/P420 with 4 to 20 mA/HART

206

Technical data

13.1 Input

1)

For devices with functional safety, the minimum permissible measuring span is limited by the

spread. Therefore, ensure that the configured spread is no higher than 5:1.

Differential pressure and flow measuring limits

Lower measuring limit

● Measuring cell

-100% of maximum measuring range or 30 mbar a /3 kPa a /0.44 psi a

with silicone oil

filling

● Measuring cell with inert oil

For process temperature -20 °C

-100% of maximum measuring range or 30 mbar a /3 kPa a /0.44 psi a

< ϑ ≤ 60 °C (-4 °F < ϑ ≤ +140 °F)

For process temperature 60 °C

-100% of maximum measuring range or 30 mbar a /3 kPa a /0.44 psi a

< ϑ ≤ 100 °C (max. 85 °C for

30 mbar a + 20 mbar a • (ϑ - 60 °C)/°C

measuring cell 30 bar with

3 kPa a + 2 kPa a • (ϑ - 60 °C)/°C

PN 420) (140 °F < ϑ ≤ 212 °F

(max. 185 °F for measuring cell

0.44 psi a + 0.29 psi a • (ϑ - 140 °F)/°F

435 psi))

● Measuring cell

For process temperature -10 °C

-100% of maximum measuring range or 100 mbar a /10 kPa a /

with FDA-

< ϑ ≤ 100 °C (-14 °F < ϑ

14.5 psi a.

compliant oil

≤ +212 °F)

Upper measuring

100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/1450 psi and 60 °C ambient

limit

temperature/medium temperature)

Lower range value Between the measuring limits (continuously adjustable)

13.1.8

Level

Level input

Measured variable

Level

Measuring span (continuous-

Measuring span¹⁾

Maximum permissible

Max. permissible

ly adjustable) and maximum

operating pressure

test pressure

operating pressure (accord-

MAWP (PS)

ing to 2014/68/EU Pressure

25 ... 250 mbar

See mounting flange

Equipment Directive)

2.5 ... 25 kPa

10 … 100 inH₂O

25 ... 600 mbar

2.5 ... 60 kPa

10 … 240 inH₂O

53 … 1600 mbar

5.3 ... 160 kPa

21 … 640 inH₂O

166 … 5000 mbar

16.6 ... 500 kPa

2.41 … 72.5 psi

SITRANS P320/P420 with 4 to 20 mA/HART

207

Technical data

13.2 Measuring accuracy of SITRANS P320

1)

For devices with functional safety, the minimum permissible measuring span is limited by the

spread. Therefore, ensure that the configured spread is no higher than 5:1.

Level measuring limits

Lower measuring limit

Measuring cell with silicone oil

-100% of max. measuring range or 30 mbar a/3 kPa a/0.44 psi a depending

filling

on the mounting flange

Measuring cell with inert oil

-100% of max. measuring range or 30 mbar a/3 kPa a/0.44 psi a depending

on the mounting flange

Measuring cell with FDA-com-

-100% of maximum measuring range or 100 mbar a /10 kPa a /1.45 psi a

pliant oil

Upper measuring limit

100% of max. range

Lower range value

Between the measuring limits (continuously adjustable)

13.2

Measuring accuracy of SITRANS P320

13.2.1

Reference conditions

● According to EN 60770-1/IEC 61298-1

● Rising characteristic curve

● Lower range value 0 bar/kPa/psi

● Seal diaphragm stainless steel

● Measuring cell with silicone oil filling

● Room temperature 25 °C (77 °F)

13.2.2

Effect of auxiliary power supply

0.005% per 1 V (in percent per change in voltage)

13.2.3

Gauge pressure

Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nominal

measuring range

● Linear characteristic curve

r ≤ 1.25

1.25 < r ≤ 30

250 mbar/25 kPa/3.6 psi

≤ 0.075%

≤ (0.008 • r + 0.055)%

● Linear characteristic curve

r ≤ 5

5 < r ≤ 100

SITRANS P320/P420 with 4 to 20 mA/HART

208

Technical data

13.2 Measuring accuracy of SITRANS P320

13.2.4

Gauge pressure from the differential pressure series

Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure from the differential pressure

series

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and

nominal measuring range

● Linear characteristic curve

r ≤ 5

5 < r ≤ 20

20 mbar/2 kPa/8.031 inH₂O

≤ 0.075%

≤ (0.005 • r + 0.05)%

● Linear characteristic curve

r ≤ 5

5 < r ≤ 60

60 mbar/6 kPa/24.09 inH₂O

≤ 0.075%

≤ (0.005 • r + 0.05)%

● Linear characteristic curve

r ≤ 5

5 < r ≤ 100

250 mbar/25 kPa/3.6 psi

≤ 0.065%

≤ (0.004 • r + 0.045)%

600 mbar/60 kPa/240.9 inH₂O

1600 mbar/160 kPa/642.4 inH₂O

5000 mbar/500 kPa/2008 inH₂O

30 bar/3 MPa/435 psi

● Linear characteristic curve

100 bar/10 MPa/1450.3 psi

r ≤ 10

10 < r ≤ 30

≤ 0.1%

≤ 0.2%

Effect of ambient temperature - gauge pressure from differential pressure series

In percent per 28 °C (50 °F)

20 mbar/2 kPa/8.031 inH₂O

≤ (0.15 • r + 0.1)%

60 mbar/6 kPa/24.09 inH₂O

≤ (0.075 • r + 0.1)%

250 mbar/25 kPa/3.6 psi

≤ (0.025 • r + 0.125)%

600 mbar/60 kPa/240.9 inH₂O

1600 mbar/160 kPa/642.4 inH₂O

5000 mbar/500 kPa/2008 inH₂O

30 bar/3 MPa/435 psi

100 bar/10 MPa/1450.3 psi

≤ (0.08 • r + 0.16)

Long-term stability at ±30 °C (±54 °F) - gauge pressure from differential pressure series

20 mbar/2 kPa/8.031 inH₂O

Per year ≤ (0.2 • r)%

60 mbar/6 kPa/24.09 inH₂O

In 5 years ≤ (0.25 • r)%

250 mbar/25 kPa/3.6 psi

In 5 years ≤ (0.125 • r)%

600 mbar/60 kPa/240.9 inH₂O

In 10 years ≤ (0.15 • r)%

1600 mbar/160 kPa/642.4 inH₂O

5000 mbar/500 kPa/2008 inH₂O

30 bar/3 MPa/435 psi

In 5 years ≤ (0.25 • r)%

In 10 years ≤ (0.35 • r)%

100 bar/10 MPa/1450.3 psi

In 5 years ≤ (0.25 • r)%

SITRANS P320/P420 with 4 to 20 mA/HART

210

Technical data

13.2 Measuring accuracy of SITRANS P320

Step response time T₆₃ (without electrical damping) - gauge pressure from differential pressure series

20 mbar/2 kPa/8.031 inH₂O

Approx. 0.160 s

60 mbar/6 kPa/24.09 inH2O

Approx. 0.150 s

250 mbar/25 kPa/3.6 psi

Approx. 0.135 s

600 mbar/60 kPa/240.9 inH₂O

1600 mbar/160 kPa/642.4 inH₂O

5000 mbar/500 kPa/2008 inH₂O

30 bar/3 MPa/435 psi

100 bar/10 MPa/1450.3 psi

Approx. 0.145 s

Effect of mounting position - gauge pressure from differential pressure series

≤ 0.7 mbar/0.07 kPa/0.01015266 psi per 10° incline

(correct the zero point with position error compensation)

13.2.5

Absolute pressure from gauge and differential pressure series

Conformity error at limit point setting, including hysteresis and repeatability - absolute pressure from gauge and differential

pressure series

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nominal

measuring range

● Linear characteristic curve

r ≤ 10

10 < r ≤ 30

All measuring cells

≤ 0.1%

≤ 0.2%

Effect of ambient temperature - absolute pressure from gauge and differential pressure series

In percent per 28 °C (50 °F)

250 mbar a/25 kPa a/3.6 psi a

≤ (0.15 • r + 0.1)

1300 mbar a/130 kPa a/18.8 psi a

≤ (0.08 • r + 0.16)

5 bar a/500 kPa a/72.5 psi a

30 bar a/3000 kPa a/435 psi a

100 bar a/10 MPa a/1450.3 psi a

160 bar a/16 MPa a/2321 psi a

400 bar a/40 MPa a/5802 psi a

700 bar a/70 MPa a/10152.6 psi a

Long-term stability at ±30 °C (±54 °F) - absolute pressure from gauge and differential pressure series

In 5 years ≤ (0.25 • r)%

SITRANS P320/P420 with 4 to 20 mA/HART

211

Technical data

13.2 Measuring accuracy of SITRANS P320

Step response time T₆₃ (without electrical damping) - absolute pressure from gauge and differential pressure series

Gauge pressure series

All measuring cells

Approx. 0.105 s

Differential pressure series

250 mbar/25 kPa/3.6 psi

Approx. 0.195 s

1300 mbar a/130 kPa a/18.8 psi a

Approx. 0.145 s

5 bar a/500 kPa a/72.5 psi a

30 bar a/3000 kPa a/435 psi a

100 bar a/10 MPa a/1450.3 psi a

Effect of mounting position - absolute pressure from gauge and differential pressure series

In pressure per change of angle

● For absolute pressure (from the gauge pressure series): ≤ 0.05 mbar/0.005 kPa/

0.000725 psi per 10° incline

● For absolute pressure (from the differential pressure series): 0.7 mbar/0.07 kPa/

0.001015 psi per 10° incline

(zero-point correction is possible using the zero point adjustment)

13.2.6

Absolute pressure with front-flush diaphragm

Conformity error at limit point setting, including hysteresis and repeatability

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nominal

measuring range

Linear characteristic curve

r ≤ 10

10 < r ≤ 30

All measuring cells

≤ 0.2%

≤ 0.4%

Effect of ambient temperature

In percent per 28 °C (50 °F)

All measuring cells

≤ (0.16 • r + 0.24)

Long-term stability at ±30 °C (±54 °F)

All measuring cells

In 5 years ≤ (0.25 • r)%

Step response time T₆₃ (without electrical damping)

Approx. 0.105 s

SITRANS P320/P420 with 4 to 20 mA/HART

212

Technical data

13.2 Measuring accuracy of SITRANS P320

Effect of mounting position

In pressure per change of angle

0.04 kPa/0.4 mbar/0.006 psi per 10° incline

(zero-point correction is possible with position error compen-

sation)

13.2.7

Gauge pressure with front-flush diaphragm

Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure with front-flush diaphragm

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nominal

measuring range

● Linear characteristic curve

r ≤ 5

5 < r ≤ 100

1 bar/100 kPa/14.5 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

4 bar/400 kPa/58 psi

16 bar/1.6 MPa/232 psi

63 bar/6.3 MPa/914 psi

Effect of ambient temperature - gauge pressure with front-flush diaphragm

In percent per 28 °C (50 °F)

1 bar/100 kPa/14.5 psi

≤ (0.08 • r + 0.16)%

4 bar/400 kPa/58 psi

16 bar/1.6 MPa/232 psi

63 bar/6.3 MPa/914 psi

Long-term stability at ±30 °C (±54 °F) - gauge pressure with front-flush diaphragm

1 bar/100 kPa/14.5 psi

In 5 years ≤ (0.25 • r)%

4 bar/400 kPa/58 psi

16 bar/1.6 MPa/232 psi

In 5 years ≤ (0.125 • r)%

63 bar/6.3 MPa/914 psi

Step response time T₆₃ (without electrical damping) - gauge pressure with front-flush diaphragm

Approx. 0.105 s

Effect of mounting position - gauge pressure with front-flush diaphragm

≤ 0.4 mbar/0.04 kPa/0.006 psi per 10° incline

(zero-point correction is possible with position error compen-

sation)

SITRANS P320/P420 with 4 to 20 mA/HART

213

Technical data

13.2 Measuring accuracy of SITRANS P320

13.2.8

Differential pressure and flow

Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nomi-

nal measuring range

Linear characteristic curve

r ≤ 5

5 < r ≤ 20

20 mbar/2 kPa/0.29 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

Linear characteristic curve

r ≤ 5

5 < r ≤ 60

60 mbar/6 kPa/0.87 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

Linear characteristic curve

r ≤ 5

5 < r ≤ 100

250 mbar/25 kPa/3.63 psi

≤ 0.065%

≤ (0.004 • r + 0.045)%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Root extraction characteris-

r ≤ 5

5 < r ≤ 20

tic

Flow > 50%

20 mbar/2 kPa/0.29 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

Root extraction characteris-

r ≤ 5

5 < r ≤ 60

tic

Flow > 50%

60 mbar/6 kPa/0.87 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

Root extraction characteris-

r ≤ 5

5 < r ≤ 100

tic

Flow > 50%

250 mbar/25 kPa/3.63 psi

≤ 0.065%

≤ (0.004 • r + 0.045)%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Root extraction characteris-

r ≤ 5

5 < r ≤ 20

tic

Flow 25 ... 50%

20 mbar/2 kPa/0.29 psi

≤ 0.15%

≤ (0.01 • r + 0.1)%

Root extraction characteris-

r ≤ 5

5 < r ≤ 60

tic

Flow 25 ... 50%

60 mbar/6 kPa/0.87 psi

≤ 0.15%

≤ (0.01 • r + 0.1)%

Root extraction characteris-

r ≤ 5

5 < r ≤ 100

tic

SITRANS P320/P420 with 4 to 20 mA/HART

214

Technical data

13.2 Measuring accuracy of SITRANS P320

Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow

Flow 25 ... 50%

250 mbar/25 kPa/3.63 psi

≤ 0.13%

≤ (0.008 • r + 0.09)%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Effect of ambient temperature - differential pressure and flow

In percent per 28 °C (50 °F)

20 mbar/2 kPa/0.29 psi

≤ (0.15 • r + 0.1)%

60 mbar/6 kPa/0.87 psi

≤ (0.075 • r + 0.1)%

250 mbar/25 kPa/3.63 psi

≤ (0.025 • r + 0.125)%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Effect of static pressure - differential pressure and flow

● On the lower range value

20 mbar/2 kPa/0.29 psi

≤ (0.3 • r) % per 70 bar (zero-point correction is

possible with position error compensation)

60 mbar/6 kPa/0.87 psi

≤ (0.1 • r)% per 70 bar (zero-point correction is

250 mbar/25 kPa/3.63 psi

possible with position error compensation)

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

30 bar/3 MPa/435.11 psi

5 bar/500 kPa/72.52 psi

≤ (0.15 • r)% per 70 bar (zero-point correction is

possible with position error compensation)

● On the measuring span

20 mbar/2 kPa/0.29 psi

≤ 0.2% per 70 bar

60 mbar/6 kPa/0.87 psi

≤ 0.1% per 70 bar

250 mbar/25 kPa/3.63 psi

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Long-term stability at ±30 °C (±54 °F) - differential pressure and flow

Static pressure max. 70 bar/7 MPa/1015 psi

20 mbar/2 kPa/0.29 psi

Per year ≤ (0.2 • r)%

60 mbar/6 kPa/0.87 psi

In 5 years ≤ (0.25 • r)%

SITRANS P320/P420 with 4 to 20 mA/HART

215

Technical data

13.2 Measuring accuracy of SITRANS P320

Long-term stability at ±30 °C (±54 °F) - differential pressure and flow

250 mbar/25 kPa/3.63 psi

In 5 years ≤ (0.125 • r)%

600 mbar/60 kPa/8.70 psi

In 10 years ≤ (0.15 • r)%

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

In 5 years ≤ (0.25 • r)%

In 10 years ≤ (0.35 • r)%

Step response time T₆₃ (without electrical damping) - differential pressure and flow (PN 160)

20 mbar/2 kPa/0.29 psi

Approx. 0.160 s

60 mbar/6 kPa/0.87 psi

Approx. 0.150 s

250 mbar/25 kPa/3.63 ps

Approx. 0.135 s

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Step response time T₆₃ (without electrical damping) - differential pressure and flow (PN 420)

250 mbar/25 kPa/3.63 psi

Approx. 0.25 s

600 mbar/60 kPa/8.70 psi

Approx. 0.2 s

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Effect of mounting position - differential pressure and flow

Effect of mounting position

In pressure per change of angle

≤ 0.7 mbar/0.07 kPa/0.028

inH₂O per 10° incline

(zero-point correction is possible

with position error compensation)

SITRANS P320/P420 with 4 to 20 mA/HART

216

Technical data

13.2 Measuring accuracy of SITRANS P320

13.2.9

Level

Conformity error at limit point setting, including hysteresis and repeatability - level

Measuring span ratio r (spread,

r = max. measuring span/set measuring span and nominal measuring range

Turn-Down)

● Linear characteristic curve

r ≤ 5

5 < r ≤ 10

250 mbar/25 kPa/3.63 psi

≤ 0.125%

≤ (0.007 • r + 0.09) %

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

Effect of ambient temperature¹⁾ - level

In percent per 28 °C (50 °F)

250 mbar/25 kPa/3.63 psi

≤ (0.025 • r + 0.125)%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

¹⁾ Data only applies to the basic unit. The error of the remote seal must be considered additively.

Effect of static pressure - level

● On the lower range value

250 mbar/25 kPa/3.63 psi

≤ (0.1 • r)% per 70 bar (zero-point correction is possible with position error

compensation)

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

≤ (0.15 • r)% per 70 bar (zero-point correction is possible with position error

compensation)

● On the measuring span

≤ (0.1 • r)% per 70 bar

Long-term stability at ±30 °C (±54 °F) - level

All measuring cells

In 5 years ≤ (0.25 • r)% static pressure max. 70 bar/7 MPa/

1015 psi

Effect of mounting position - level

Depends on the fill fluid in the

mounting flange

SITRANS P320/P420 with 4 to 20 mA/HART

217

Technical data

13.3 Measuring accuracy of SITRANS P420

13.3

Measuring accuracy of SITRANS P420

13.3.1

Reference conditions

● According to EN 60770-1/IEC 61298-1

● Rising characteristic curve

● Lower range value 0 bar/kPa/psi

● Seal diaphragm stainless steel

● Measuring cell with silicone oil filling

● Room temperature 25 °C (77 °F)

13.3.2

Effect of auxiliary power supply

0.005% per 1 V (in percent per change in voltage)

13.3.3

Gauge pressure

Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nominal

measuring range

● Linear characteristic curve

r ≤ 1.25

1.25 < r ≤ 30

250 mbar/25 kPa/3.6 psi

≤ 0.065%

≤ (0.008 • r + 0.055)%

● Linear characteristic curve

r ≤ 5

5 < r ≤ 100

1 bar/100 kPa/14.5 psi

≤ 0.04%

≤ (0.004 • r + 0.045)%

4 bar/400 kPa/58 psi

16 bar/1.6 MPa/232 psi

63 bar/6.3 MPa/914 psi

160 bar/16 MPa/2321 psi

● Linear characteristic curve

r ≤ 5

5 < r ≤ 100

400 bar/40 MPa/5802 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

700 bar/70 MPa/10152 psi

Effect of ambient temperature - gauge pressure

In percent per 28 °C (50 °F)

250 mbar/25 kPa/3.6 psi

≤ (0.16 • r + 0.1)%

1 bar/100 kPa/14.5 psi

≤ (0.05 • r + 0.1)%

SITRANS P320/P420 with 4 to 20 mA/HART

218

Technical data

13.3 Measuring accuracy of SITRANS P420

Effect of ambient temperature - gauge pressure

4 bar/400 kPa/58 psi

≤ (0.025 • r + 0.125)%

16 bar/1.6 MPa/232 psi

63 bar/6.3 MPa/914 psi

160 bar/16 MPa/2321 psi

400 bar/40 MPa/5802 psi

700 bar/70 MPa/10152 psi

≤ (0.08 • r + 0.16)%

Long-term stability at ±30 °C (±54 °F) - gauge pressure

250 mbar/25 kPa/3.6 psi

Per year ≤ (0.25 • r)%

1 bar/100 kPa/14.5 psi

In 5 years ≤ (0.25 • r)%

In 10 years ≤ (0.35 • r)%

4 bar/400 kPa/58 psi

In 5 years ≤ (0.125 • r)%

16 bar/1.6 MPa/232 psi

In 10 years ≤ (0.15 • r)%

63 bar/6.3 MPa/914 psi

160 bar/16 MPa/2321 psi

400 bar/40 MPa/5802 psi

700 bar/70 MPa/10152 psi

In 5 years ≤ (0.25 • r)%

In 10 years ≤ (0.35 • r)%

Step response time T₆₃ (without electrical damping) - gauge pressure

Approx. 0.105 s

Effect of mounting position - gauge pressure

≤ 0.05 mbar/0.005 kPa/0.000725 psi per 10° incline

(zero-point correction is possible with position error compen-

sation)

13.3.4

Gauge pressure from the differential pressure series

Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure from differential pressure series

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nomi-

nal measuring range

● Linear characteristic curve

r ≤ 5

5 < r ≤ 20

20 mbar/2 kPa/8.031 inH₂O

≤ 0.075%

≤ (0.005 • r + 0.05)%

● Linear characteristic curve

r ≤ 5

5 < r ≤ 60

60 mbar/6 kPa/24.09 inH₂O

≤ 0.075%

≤ (0.005 • r + 0.05)%

● Linear characteristic curve

r ≤ 5

5 < r ≤ 100

SITRANS P320/P420 with 4 to 20 mA/HART

219

Technical data

13.3 Measuring accuracy of SITRANS P420

Effect of mounting position

≤ 0.7 mbar/0.07 kPa/0.01015266 psi per 10° incline

(zero-point correction is possible with position error compen-

sation)

13.3.5

Absolute pressure from gauge and differential pressure series

Conformity error at limit point setting, including hysteresis and repeatability - absolute pressure from gauge and differential

pressure series

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nominal

measuring range

● Linear characteristic curve

r ≤ 10

10 < r ≤ 30

All measuring cells

≤ 0.1%

≤ 0.2%

Effect of ambient temperature - absolute pressure from gauge and differential pressure series

In percent per 28 °C (50 °F)

250 mbar a/25 kPa a/3.6 psi a

≤ (0.15 • r + 0.1)

1300 mbar a/130 kPa a/18.8 psi a

≤ (0.08 • r + 0.16)

5 bar a/500 kPa a/72.5 psi a

30 bar a/3000 kPa a/435 psi a

100 bar a/10 MPa a/1450.3 psi a

160 bar a/16 MPa a/2321 psi a

400 bar a/40 MPa a/5802 psi a

700 bar a/70 MPa a/10152.6 psi a

Long-term stability at ±30 °C (±54 °F) - absolute pressure from gauge and differential pressure series

In 5 years ≤ (0.25 • r)%

Step response time T₆₃ (without electrical damping) - absolute pressure from gauge and differential pressure series

Gauge pressure series

All measuring cells

Approx. 0.105 s

Differential pressure series

250 mbar/25 kPa/3.6 psi

Approx. 0.195 s

1300 mbar a/130 kPa a/18.8 psi a

Approx. 0.145 s

5 bar a/500 kPa a/72.5 psi a

30 bar a/3000 kPa a/435 psi a

100 bar a/10 MPa a/1450.3 psi a

SITRANS P320/P420 with 4 to 20 mA/HART

221

Technical data

13.3 Measuring accuracy of SITRANS P420

Effect of mounting position - absolute pressure from gauge and differential pressure series

In pressure per change of angle

● For absolute pressure (from the gauge pressure series): ≤

0.05 mbar/0.005 kPa/0.000725 psi per 10° incline

● For absolute pressure (from the differential pressure

series): 0.7 mbar/0.07 kPa/0.001015 psi per 10° incline

(zero-point correction is possible with position error compen-

sation)

13.3.6

Absolute pressure with front-flush diaphragm

Conformity error at limit point setting, including hysteresis and repeatability

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nominal

measuring range

Linear characteristic curve

r ≤ 10

10 < r ≤ 30

All measuring cells

≤ 0.2%

≤ 0.4%

Effect of ambient temperature

In percent per 28 °C (50 °F)

All measuring cells

≤ (0.16 • r + 0.24)

Long-term stability at ±30 °C (±54 °F)

All measuring cells

In 5 years ≤ (0.25 • r)%

Step response time T₆₃ (without electrical damping)

Approx. 0.105 s

Effect of mounting position

In pressure per change of angle

0.04 kPa/0.4 mbar/0.006 psi per 10° incline

(zero-point correction is possible with position error compen-

sation)

SITRANS P320/P420 with 4 to 20 mA/HART

222

Technical data

13.3 Measuring accuracy of SITRANS P420

13.3.7

Gauge pressure with front-flush diaphragm

Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure with front-flush diaphragm

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nominal

measuring range

● Linear characteristic curve

r ≤ 5

5 < r ≤ 100

1 bar/100 kPa/14.5 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

4 bar/400 kPa/58 psi

16 bar/1.6 MPa/232 psi

63 bar/6.3 MPa/914 psi

Effect of ambient temperature - gauge pressure with front-flush diaphragm

In percent per 28 °C (50 °F)

1 bar/100 kPa/14.5 psi

≤ (0.08 • r + 0.16)%

4 bar/400 kPa/58 psi

16 bar/1.6 MPa/232 psi

63 bar/6.3 MPa/914 psi

Long-term stability at ±30 °C (±54 °F) - gauge pressure with front-flush diaphragm

1 bar/100 kPa/14.5 psi

In 5 years ≤ (0.25 • r)%

4 bar/400 kPa/58 psi

16 bar/1.6 MPa/232 psi

In 5 years ≤ (0.125 • r)%

63 bar/6.3 MPa/914 psi

Step response time T₆₃ (without electrical damping) - gauge pressure with front-flush diaphragm

Approx. 0.105 s

Effect of mounting position - gauge pressure with front-flush diaphragm

≤ 0.4 mbar/0.04 kPa/0.006 psi per 10° incline

(zero-point correction is possible with position error compen-

sation)

13.3.8

Differential pressure and flow

Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow

Measuring span ratio r (spread, Turn-Down)

r = max. measuring span/set measuring span and nomi-

nal measuring range

Linear characteristic curve

r ≤ 5

5 < r ≤ 20

20 mbar/2 kPa/0.29 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

SITRANS P320/P420 with 4 to 20 mA/HART

223

Technical data

13.3 Measuring accuracy of SITRANS P420

Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow

Linear characteristic curve

r ≤ 5

5 < r ≤ 60

60 mbar/6 kPa/0.87 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

Linear characteristic curve

r ≤ 5

5 < r ≤ 100

250 mbar/25 kPa/3.63 psi (PN160)

≤ 0.04%

≤ (0.004 • r + 0.045)%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

250 mbar/25 kPa/3.63 psi (PN420)

≤ 0.065%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Root extraction characteris-

r ≤ 5

5 < r ≤ 20

tic

Flow > 50%

●

20 mbar/2 kPa/0.29 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

Root extraction characteris-

r ≤ 5

5 < r ≤ 60

tic

Flow > 50%

●

60 mbar/6 kPa/0.87 psi

≤ 0.075%

≤ (0.005 • r + 0.05)%

Root extraction characteris-

r ≤ 5

5 < r ≤ 100

tic

Flow > 50%

●

250 mbar/25 kPa/3.63 psi

≤ 0.04%

≤ (0.004 • r + 0.045)%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Root extraction characteris-

r ≤ 5

5 < r ≤ 20

tic

Flow 25 ... 50%

●

20 mbar/2 kPa/0.29 psi

≤ 0.15%

≤ (0.01 • r + 0.1)%

Root extraction characteris-

r ≤ 5

5 < r ≤ 60

tic

Flow 25 ... 50%

●

60 mbar/6 kPa/0.87 psi

≤ 0.15%

≤ (0.01 • r + 0.1)%

Root extraction characteris-

r ≤ 5

5 < r ≤ 100

tic

SITRANS P320/P420 with 4 to 20 mA/HART

224

Technical data

13.3 Measuring accuracy of SITRANS P420

Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow

Flow 25 ... 50%

●

250 mbar/25 kPa/3.63 psi

≤ 0.08%

≤ (0.008 • r + 0.09)%

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Effect of ambient temperature - differential pressure and flow

In percent per 28 °C (50 °F)

20 mbar/2 kPa/0.29 psi

≤ (0.15 • r + 0.1)%

60 mbar/6 kPa/0.87 psi

≤ (0.075 • r + 0.1)%

250 mbar/25 kPa/3.63 psi

≤ (0.025 • r + 0.0625)%

600 mbar/60 kPa/8.70 psi

≤ (0.0125 • r+0.0625)%

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

≤ (0.025 • r + 0.0625)%

30 bar/3 MPa/435.11 psi

≤ (0.0125 • r+0.0625)%

Effect of static pressure - differential pressure and flow

● On the lower range value

20 mbar/2 kPa/0.29 psi

≤ (0.2 • r) % per 70 bar (zero-point correction is possible with

position error compensation)

60 mbar/6 kPa/0.87 psi

≤ (0.1 • r)% per 70 bar (zero-point correction is possible with

250 mbar/25 kPa/3.63 psi

position error compensation)

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

30 bar/3 MPa/435.11 psi

5 bar/500 kPa/72.52 psi

≤ (0.15 • r)% per 70 bar (zero-point correction is possible with

position error compensation)

● On the measuring span

20 mbar/2 kPa/0.29 psi

≤ 0.2% per 70 bar

60 mbar/6 kPa/0.87 psi

≤ 0.1% per 70 bar

250 mbar/25 kPa/3.63 psi

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Long-term stability at ±30 °C (±54 °F) - differential pressure and flow

Static pressure max. 70 bar/7 MPa/1015 psi

20 mbar/2 kPa/0.29 psi

Per year ≤ (0.2 • r)%

60 mbar/6 kPa/0.87 psi

In 5 years ≤ (0.25 • r)%

SITRANS P320/P420 with 4 to 20 mA/HART

225

Technical data

13.3 Measuring accuracy of SITRANS P420

Long-term stability at ±30 °C (±54 °F) - differential pressure and flow

250 mbar/25 kPa/3.63 psi

In 5 years ≤ (0.125 • r)%

600 mbar/60 kPa/8.70 psi

In 10 years ≤ (0.15 • r)%

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

In 5 years ≤ (0.25 • r)%

In 10 years ≤ (0.35 • r)%

Step response time T₆₃ (without electrical damping) - differential pressure and flow (PN 160)

20 mbar/2 kPa/0.29 psi

Approx. 0.160 s

60 mbar/6 kPa/0.87 psi

Approx. 0.150 s

250 mbar/25 kPa/3.63 ps

Approx. 0.135 s

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Step response time T₆₃ (without electrical damping) - differential pressure and flow (PN 420)

250 mbar/25 kPa/3.63 psi

Approx. 0.25 s

600 mbar/60 kPa/8.70 psi

Approx. 0.2 s

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

30 bar/3 MPa/435.11 psi

Effect of mounting position - differential pressure and flow

Effect of mounting position

In pressure per change of angle

≤ 0.7 mbar/0.07 kPa/0.028

inH₂O per 10° incline

(zero-point correction is possible

with position error compensation)

SITRANS P320/P420 with 4 to 20 mA/HART

226

Technical data

13.3 Measuring accuracy of SITRANS P420

13.3.9

Level

Conformity error at limit point setting, including hysteresis and repeatability - level

Measuring span ratio r (spread,

r = max. measuring span/set measuring span and nominal measuring range

Turn-Down)

● Linear characteristic curve

r ≤ 5

5 < r ≤ 10

250 mbar/25 kPa/3.63 psi

≤ 0.125%

≤ (0.007 • r + 0.09) %

600 mbar/60 kPa/8.70 psi

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

Effect of ambient temperature¹⁾ - level

In percent per 28 °C (50 °F)

250 mbar/25 kPa/3.63 psi

≤ (0.025 • r + 0.0625)%

5 bar/500 kPa/72.52 psi

600 mbar/60 kPa/8.70 psi

≤ (0.125 • r + 0.0625)%

1600 mbar/160 kPa/23.21 psi

¹⁾ Data only applies to the basic unit. The error of the remote seal must be considered additively.

Effect of static pressure - level

● On the lower range value

250 mbar/25 kPa/3.63 psi

≤ (0.3 • r) % per 70 bar (zero-point correction is possible with position error

compensation)

600 mbar/60 kPa/8.70 psi

≤ (0.15 • r)% per 70 bar (zero-point correction is possible with position error

compensation)

1600 mbar/160 kPa/23.21 psi

5 bar/500 kPa/72.52 psi

● On the measuring span

≤ (0.1 • r)% per 70 bar

Long-term stability at ±30 °C (±54 °F) - level

All measuring cells

In 5 years ≤ (0.25 • r)% static pressure max. 70 bar/7 MPa/

1015 psi

Effect of mounting position - level

Depends on the fill fluid in the

mounting flange

SITRANS P320/P420 with 4 to 20 mA/HART

227

Technical data

13.5 Operating conditions

Operating conditions for gauge pressure and absolute pressure with

front-flush diaphragm

Enclosure

-40 … +100 °C (-40 … +212 °F)

Measuring cell with sili-

-40 … +85 °C (-40 … +185 °F)

cone oil filling

Measuring cell with inert

-40 … +85 °C (-40 … +185 °F)

oil

Measuring cell with FDA-

-10 … +85 °C (14 … 185 °F)

compliant oil

Display

-20 … +80 °C (-4 … +176 °F)

● Storage temperature

-50 … +85 °C (-58 … +185 °F)

(with FDA-compliant oil: -20 ... + 85

°C (-4 ... +185 °F))

Climate class in accordance

4K4H

with IEC 60721-3-4

Degree of protection accord-

Enclosure with appropriate cable

IP66/Type 4X

ing to IEC/EN 60529/UL50-E

gland

IP68 (2 hours at 1.5 m)

Enclosure with mounted M12 device

IP66/Type 4X

plug and/or lightning protection¹⁾

Enclosure with mounted HAN device

IP65

plug¹⁾

Electromagnetic compatibili-

ty

● Interference emission and

In accordance with EN 61326 and

interference immunity

NAMUR NE 21

Process medium conditions

Process temperature²⁾

● Measuring cell with

-40 … +150°C (-40 … +302 °F)

silicone oil filling

-40 … +200°C (-40 … +392 °F) with

cooling extension

● Measuring cell with inert oil

-20 … +100 °C (-4 … +212 °F)

● Measuring cell with FDA-

-10 … +150°C (14 … 302 °F)

compliant oil

-10 … +200°C (14 … 392 °F) with

cooling extension

1)

Only for non-Ex devices, not approved for use in Ex areas (ATEX, IECEx, FM, CSA)

2)

Observe the temperature limits in the process connection standards (e.g. DIN 32676 and DIN 11851) for the maximum

process temperature for flush-mounted process connections.

Operating conditions for gauge pressure and absolute pressure (from

the differential pressure series), differential pressure and flow

Installation conditions

● Measuring cells for

Dynamic stress according to AD 2000-S1 No. 1.4:

differential pressure with

● For MAWP (PS) = 420 bar: Maximum 1000 load changes

PN 420

● At 10% of MAWP (PS): Any number of load changes

Ambient conditions

● Ambient temperature

SITRANS P320/P420 with 4 to 20 mA/HART

230

Technical data

13.5 Operating conditions

Operating conditions for gauge pressure and absolute pressure (from

the differential pressure series), differential pressure and flow

Note

Observe the temperature class in hazardous areas.

Enclosure

-40 … +100 °C (-40 … +212 °F)

Measuring cell with sili-

-40 … +85 °C (-40 … +185 °F)

cone oil filling

● Measuring cell

●

-20 … +85 °C (-4 … +185 °F)

30 bar (435 psi),

● For flow: -20 … +85 °C (-4 …

PN 420

+185 °F)

Measuring cell with inert

-40 … +85 °C (-40 … +185 °F)

oil

Measuring cell with FDA-

-10 … +85 °C (14 … 185 °F)

compliant oil

Display

-20 … +80 °C (-4 … +185 °F)

● Storage temperature

-50 … +85 °C (-58 … +185 °F)

(with FDA-compliant oil: -20 ... + 85

°C (-4 ... +185 °F))

Climate class in accordance

4K4H

with IEC 60721-3-4

Degree of protection accord-

Enclosure with appropriate cable

IP66/Type 4X

ing to IEC/EN 60529/UL50-E

gland

IP68 (2 hours at 1.5 m)

Enclosure with mounted M12 device

IP66/Type 4X

plug and/or lightning protection¹⁾

Enclosure with mounted HAN device

IP65

plug¹⁾

Electromagnetic compatibili-

ty

Interference emission and

In accordance with EN 61326 and

interference immunity

NAMUR NE 21

Process medium conditions

● Process temperature

Measuring cell with sili-

-40 … +100 °C (-40 … +212 °F)

cone oil filling

● Measuring cell

-20 … +100°C (-4 … +212 °F)

30 bar (435 psi),

PN 420

Measuring cell with inert

-20 … +100 °C (-4 … +212 °F)

oil

● Measuring cell

-20 … +100 °C (-4 … +212 °F)

30 bar (435 psi),

PN 420

Measuring cell with FDA-

-10 ... +100°C (14 ...+212°F)

compliant oil

1)

Only for non-Ex devices, not approved for use in Ex areas (ATEX, IECEx, FM, CSA)

SITRANS P320/P420 with 4 to 20 mA/HART

231

Technical data

13.5 Operating conditions

Operating conditions for level

Installation conditions

● Installation instruction

Specified by the flange

Ambient conditions

● Ambient temperature

Note

Observe the allocation of the max. permissible operating temperature to the max. permissible

operating pressure of the relevant flange connection.

Enclosure

-40 … +100 °C (-40 … +212 °F)

Measuring cell with sili-

-40 … +85 °C (-40 … +185 °F)

cone oil filling

Display

-20 … +80 °C (-4 … +185 °F)

● Storage temperature

-50 … +85 °C (-58 … +185 °F)

Climate class in accordance

4K4H

with IEC 60721-3-4

Degree of protection accord-

Enclosure with appropriate cable

IP66/Type 4X

ing to IEC/EN 60529/UL50-E

gland

IP68 (2 hours at 1.5 m)

Enclosure with mounted M12 device IP66/Type 4X

plug and/or lightning protection¹⁾

Enclosure with mounted HAN device IP65

plug¹⁾

Electromagnetic compatibili-

ty

Interference emission and

In accordance with EN 61326 and

interference immunity

NAMUR NE 21

Process medium conditions

● Process temperature

Measuring cell with sili-

● Plus side: See mounting flange

cone oil filling

● Minus side: -40 … +100 °C

(-40 … +212 °F)

1)

Only for non-Ex devices, not approved for use in Ex areas (ATEX, IECEx, FM, CSA)

SITRANS P320/P420 with 4 to 20 mA/HART

232

Technical data

13.6 Vibration resistance

13.6

Vibration resistance

General operating conditions

Gauge pressure series²⁾

Differential pressure series¹⁾

Aluminum and stainless steel enclosure

Aluminum and stainless steel enclosure

Vibrations (sine)

2 ... 9 Hz at 0.3 mm

IEC 60068-2-6

9 ... 200 Hz at 5 m/s²

1 octave/min

5 cycles/axis

Continuous shocks (half-sine)

70 m/s²

IEC 60068-2-27

30 ms

6 shocks/axis

Continuous shocks (half-sine)

250 m/s²

IEC 60068-2-27

6 ms

1000 shocks/axis

1) Without mounting bracket

2) With mounting bracket

Operating conditions according to KTA

Gauge pressure series²⁾

Differential pressure series²⁾

3503

Aluminum and stainless steel enclosure

Aluminum and stainless steel enclosure

Vibrations (sine)

9 ... 35 Hz at 10 m/s²

IEC 60068-2-6

1 octave/min

1 cycle/axis

Vibrations (sine)

5 ... 7 Hz at 20 mm

IEC 60068-2-6

9 ... 100 Hz at 20 m/s²

10 octave/min

1 cycle/axis

Continuous shocks (half-sine)

300 m/s²

IEC 60068-2-27

11 ms

6 shocks/axis

2) With mounting bracket

Operating conditions according to IEC

Gauge pressure series²⁾

Differential pressure series¹⁾²⁾

61298-3 (2g normal)

Aluminum and stainless steel enclosure Aluminum and stainless steel enclosure

Vibrations (sine)

10 ... 58 Hz at 0.3 mm

IEC 60068-2-6

58 ... 1000 Hz at 20 m/s²

1 octave/min

20 cycles/axis

1) Without mounting bracket

2) With mounting bracket

SITRANS P320/P420 with 4 to 20 mA/HART

233

Technical data

13.7 Construction

Operating conditions according to IEC

Differential pressure series¹⁾

61298-3 (5g enhanced)

Aluminum and stainless steel enclosure

Vibrations (sine)

10 ... 58 Hz at 0.7 mm

IEC 60068-2-6

58 ... 1000 Hz at 50 m/s²

1 octave/min

20 cycles/axis

1) Without mounting bracket

Operating conditions for marine (only in Gauge pressure series¹⁾²⁾

Differential pressure series³⁾

combination with order option E):

DNV-GL (Det Norske Veritas/Germa-

2 ... 25 Hz at 3.2 mm

nischer Lloyd)

25 ... 100 Hz at 40 m/s²

Lloyd’s Register

0.5 octave/min

Bureau Veritas

1 frequency sweep/axis

ABS (American Bureau of Shipping)

Amplification factor (Q) < 2, 30 Hz/90 min

RINA (Registro Italiano Navale)

Amplification factor (Q) > 2, resonant frequency/90 min

CCS (China Classification Society)

1) Without bracket and aluminum enclosure

2) With mounting bracket, aluminum and stainless steel enclosure

3) Without mounting bracket, aluminum and stainless steel enclosure

13.7

Construction

Construction for gauge pressure and absolute pressure (from the gauge pressure series)

Weight

Approx. 1.8 kg (3.9 lb) with aluminum enclosure

Approx. 3.8 kg (8.3 lb) with stainless steel enclosure

Material

● Wetted parts materials

Process connection

Stainless steel, material no. 1.4404/316L or Alloy C22, material no. 2.4602

Oval flange

Stainless steel, mat. no. 1.4404/316L

Seal diaphragm

Stainless steel, material no. 1.4404/316L or Alloy C276, material no. 2.4819

● Non-wetted parts materials

Electronics housing

● Low-copper die-cast aluminum GD-AlSi 12 or stainless steel precision casting, mat.

no. 1.4409/ CF-3M

● Standard: Powder coating with polyurethane

Option: 2 coats: Coat 1: epoxy-based; coat 2: Polyurethane

● Stainless steel nameplate (1.4404/316L)

Mounting bracket

Steel, galvanized, stainless steel 1.4301/304, stainless steel 1.4404/316L

SITRANS P320/P420 with 4 to 20 mA/HART

234

Technical data

13.7 Construction

Construction for gauge pressure and absolute pressure (from the gauge pressure series)

Process connection

● Connection pin G¹/₂A in accordance with DIN EN 837-1

● Female thread ¹/₂-14 NPT

● Oval flange (PN 160 (MAWP 2320 psi g)) with fastening screw thread:

-

⁷/₁₆-20 UNF in accordance with EN 61518

– M10 in accordance with DIN 19213

● Oval flange (PN 420 (MAWP 2320 psi g)) with fastening screw thread:

-

⁷/₁₆-20 UNF in accordance with EN 61518

– M12 in accordance with DIN 19213

● Male thread M20 x 1.5 and ¹/₂-14 NPT

Electrical connection

Cable inlet using the following screwed joints:

● M20 x 1.5

●

½-14 NPT

● Han 7D/Han 8D connector¹⁾

● M12 connector

1)

Han 8D is identical to Han 8U.

Construction for gauge pressure, with flush mounted diaphragm

Weight (pressure transmitter without

Approx. 1.8 kg (3.9 lb) with aluminum enclosure

mounting flange)

Approx. 3.8 kg (8.3 lb) with stainless steel enclosure

Material

● Wetted parts materials

Process connection

Stainless steel, mat. no. 1.4404/316L

Seal diaphragm

Stainless steel, material no. 1.4404/316L or Alloy C276, material no. 2.4819

● Non-wetted parts materials

Electronics housing

● Low-copper die-cast aluminum GD-AlSi 12 or stainless steel precision casting,

mat. no. 1.4409/CF-3M

● Standard: Powder coating with polyurethane

D20 option: 2 coats: Coat 1: epoxy-based; coat 2: Polyurethane

● Stainless steel nameplate (1.4404/316L)

Mounting bracket

Steel, galvanized, stainless steel 1.4301/304, stainless steel 1.4404/316L

Process connection

● Flanges as per EN and ASME

● F&B and Pharma flange

● BioConnect/BioControl

● PMC style

Electrical connection

Cable inlet using the following screwed joints:

● M20x1.5

●

½-14 NPTM

● Han 7D/Han 8D connector¹⁾

● M12 connector

1)

Han 8D is identical to Han 8U.

SITRANS P320/P420 with 4 to 20 mA/HART

235

Technical data

13.7 Construction

Construction for gauge pressure and absolute pressure (from the differential pressure series), differential pressure and flow

rate

Weight

Approx. 3.9 kg (8.5 lb) with aluminum enclosure

Approx. 5.9 kg (13 lb) with stainless steel enclosure

Material

● Wetted parts materials

Seal diaphragm

Stainless steel, mat. no. 1.4404/316L, Alloy C276, mat. no. 2.4819, Monel 400, mat.

no. 2.4360, tantalum or gold

Pressure caps and vents

Stainless steel, mat. no. 1.4408 to PN 160, mat. no. 1.4571/316Ti for PN 420, Al-

loy C22, 2.4602 or Monel 400, mat. no. 2.4360

O-ring

FKM (Viton) or optionally: PTFE, FEP, FEPM and NBR

● Non-wetted parts materials

Electronics housing

● Low-copper die-cast aluminum GD-AlSi 12 or stainless steel precision casting,

mat. no. 1.4409/CF-3M

● Standard: Powder coating with polyurethane

D20 option: 2 coats: Coat 1: epoxy-based; coat 2: Polyurethane

● Stainless steel nameplate (1.4404/316L)

Pressure cap screws

Stainless steel ISO 3506-1 A4-70

Mounting bracket

Steel, galvanized, stainless steel 1.4301/304, stainless steel 1.4404/316L

Process connection

¹/₄-18 NPT female thread and flange connection with ⁷/₁₆-20 UNF fastening screw

thread in accordance with EN 61518 or M10 fastening screw thread in accordance

with DIN 19213 (M12 for PN 420 (MAWP 6092 psi))

Electrical connection

Screw terminals

Cable inlet using the following screwed joints:

● M20 x 1.5

●

½-14 NPT

● Han 7D/Han 8D connector¹⁾

● M12 connector

1)

Han 8D is identical to Han 8U.

Construction for level

Weight

● In accordance with EN (pressure

Approx. 11 … 13 kg (24.2 … 28.7 lb) with aluminum enclosure

transmitter with mounting flange,

Approx. 13 ... 15 kg (28.7 ... 33 lb) with stainless steel enclosure

without tube)

● In accordance with ASME

Approx. 11 … 18 kg (24.2 … 39.7 lb) with aluminum enclosure

(pressure transmitter with

Approx. 13 ... 20 kg (28.7 ... 44 lb) with stainless steel enclosure

mounting flange, without tube)

Material

● Wetted parts materials

Plus side

SITRANS P320/P420 with 4 to 20 mA/HART

236

Technical data

13.7 Construction

Construction for level

● Seal diaphragm on the

Stainless steel, mat. no. 1.4404/316L, Monel 400, mat. no. 2.4360, Alloy B2, mat. no.

mounting flange

2.4617, Alloy C276, mat. no. 2.4819, Alloy C22, mat. no. 2.4602, tantalum, PTFE

● Sealing surface

Smooth as per EN 1092-1, form B1 or ASME B16.5 RF 125 … 250 AA for stainless

steel 316L, EN 2092-1 form B2 or ASME B16.5 RFSF for the remaining materials

Sealing material in the pressure

caps

● For standard applications

FKM (Viton)

● For underpressure

Copper

applications on the mounting

flange

Minus side

● Seal diaphragm

Stainless steel, mat. no. 1.4404/316L

● Pressure caps locking screws

Stainless steel, mat. no. 1.4408

● Locking screw

Stainless steel ISO 3506-1 A4-70

● O-ring

FKM (FKM (Viton))

● Non-wetted parts materials

Electronics housing

● Low-copper die-cast aluminum GD-AlSi 12 or stainless steel precision casting,

mat. no. 1.4409/CF-3M

● Standard: Powder coating with polyurethane

D20 option: 2 coats: Coat 1: epoxy-based; coat 2: Polyurethane

● Stainless steel nameplate (1.4404/316L)

Pressure cap screws

Stainless steel ISO 3506-1 A4-70

Measuring cell filling

Silicone oil

● Mounting flange fill fluid

Silicon oil or a different design

Process connection

● Plus side

Flange as per EN and ASME

● Minus side

¹/₄-18 NPT female thread and flange connection with M10 fastening screw thread in

accordance with DIN 19213 (M12 for PN 420 (MAWP 6092 psi)) or ⁷/₁₆-20 UNF in

accordance with EN 61518

Electrical connection

Screw terminals

Cable inlet using the following screwed joints:

● M20 x 1.5

●

½-14 NPT

● Han 7D/Han 8D connector¹⁾

● M12 connector

1)

Han 8D is identical to Han 8U.

SITRANS P320/P420 with 4 to 20 mA/HART

237

Technical data

13.9 Display, keys and auxiliary power

13.8

Torques

Torques

Connecting terminals

● Connecting terminals in the connection compartment

1.5 Nm (1.1 ft lb)

● External ground terminal on enclosure

Cable glands/blanking plugs

● Screw-in torque for plastic gland in all enclosures

4 Nm (3 ft lb)

● Screw-in torque for metal/stainless steel glands in

6 Nm (4.4 ft lb)

aluminum/stainless steel enclosure

● Screw-in torque for NPT adapter made of metal/stainless

15 Nm (11.1 ft lb)

steel in aluminum/stainless steel enclosure

● Tightening torque for union nut made of plastic

2.5 Nm (1.8 ft lb)

● Tightening torque for union nut made of metal/stainless

4 Nm (3 ft lb)

steel

Screws for mounting bracket (option)

● Tightening torque for thread M8 or ⁵/₁₆-24 UNF

18 Nm (13.2 ft lb)

● Tightening torque for thread M10 or ⁷/₁₆-20 UNF

36 Nm (26.5 ft lb)

Retaining screws for rotation of the enclosure

● Tightening torque for aluminum enclosure

3.8 Nm (2.8 ft lb)

● Tightening torque for stainless steel enclosure

3.5 Nm (2.5 ft lb)

13.9

Display, keys and auxiliary power

Display and buttons

Buttons

4 buttons for operation directly on the device

Display

● With or without integrated display (optional)

● Cover with glass pane (option)

Auxiliary power U_H

HART

Terminal voltage on pressure transmitter

● DC 10.5 V … 45 V

● In the case of intrinsically safe operation 10.5 V … 30 V DC

Auxiliary power

-

Separate supply voltage

-

SITRANS P320/P420 with 4 to 20 mA/HART

238

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