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Siemens SITRANS P. Operating Instructions (2019) - page 2

Description

4.6 Remote seal and differential pressure flow measuring systems

4.6

Remote seal and differential pressure flow measuring systems

4.6.1

Remote seal

●

A remote seal measuring system comprises the following elements:

- Remote seal

- Transmission line, e.g. capillary line

- Pressure transmitter

Note

Malfunction of the remote seal measuring system

If you separate the components of the remote seal measuring system, this results in

malfunctioning of the system.

Do not separate the components under any circumstances.

●

The measuring system based on a hydraulic principle is used to transfer pressure.

●

The capillary line and the remote seal diaphragm are the most sensitive components in the

remote seal measuring system. The material thickness of the remote seal diaphragm is only

∼ 0.1 mm.

●

The smallest of leakages in the transmission system leads to the loss of transmission fluid.

●

The loss of transmission fluid results in inaccuracies in the measurement and failure of the

measuring system.

●

In order to avoid leaks and measuring errors, please observe the installation and

maintenance instructions in addition to the safety notes.

See also

Installation with remote seal (Page 54)

4.6.2

Differential pressure - flow measuring systems

A differential pressure flow measuring system consists of the following components:

● Primary element, e.g. orifice or averaging pitot tube

● Shutoff fitting, valve manifold

● Pressure transmitter

Application examples for differential pressure and flow with primary elements, refer to section

Differential pressure and flow rate (Page 94).

You can find additional information on primary elements in the associated instructions under:

Manuals for SITRANS FP (https://support.industry.siemens.com/cs/ww/en/ps/26040/man )

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5

5.1

Basic safety instructions

DANGER

Pressure applications

Danger to personnel, system and environment will result from improper disassembly.

● Never attempt to loosen, remove, or disassemble process connection while vessel

contents are under pressure.

WARNING

Wetted parts unsuitable for the process media

Risk of injury or damage to device.

Hot, toxic and corrosive media could be released if the wetted parts are unsuitable for the

process medium.

● Ensure that the material of the device parts wetted by the process medium is suitable for

the medium. Refer to the information in Technical data (Page 199).

WARNING

Unsuitable connecting parts

Risk of injury or poisoning.

In case of improper mounting, hot, toxic, and corrosive process media could be released at the

connections.

● Ensure that connecting parts (such as flange gaskets and bolts) are suitable for connection

and process media.

WARNING

Exceeded maximum permissible operating pressure

Risk of injury or poisoning.

The maximum permissible operating pressure depends on the device version, pressure limit

and temperature rating. The device can be damaged if the operating pressure is exceeded.

Hot, toxic and corrosive process media could be released.

Ensure that maximum permissible operating pressure of the device is not exceeded. Refer to

the information on the nameplate and/or in Technical data (Page 199).

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5.1 Basic safety instructions

WARNING

Incorrect material for the diaphragm in Zone 0

Risk of explosion in the hazardous area. If operated with intrinsically safe supply devices of

category "ib" or devices of the flameproof enclosure version "Ex d" and simultaneous use in

Zone 0, pressure transmitter explosion protection depends on the tightness of the diaphragm.

● Ensure that the material used for the diaphragm is suitable for the process medium. Refer

to the information in the section "Technical data (Page 199)".

WARNING

Loss of safety for devices with "flameproof enclosure" type of protection

Risk of explosion in hazardous areas. An explosion may be caused by hot gas escaping from

the flameproof enclosure if there is too little space between it and fixed parts (e.g. walls, pipes).

● Ensure that there is a minimum clearance of at least 40 mm between the flameproof joints

and the fixed parts.

① Flameproof joint

WARNING

Using safety extra-low voltage for devices of the protection type "db", "ec", "tb" or "tc"

Risk of explosion in hazardous areas.

● Isolate the non-intrinsically safe circuit safely from ground, e.g.: through a SELV circuit.

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5.1 Basic safety instructions

WARNING

Vibrations in the plant

Risk of injury or damage to device.

Vibration leads to material fatigue, for example, cracks and weld seams breaks.

Hot, toxic and corrosive process media can emerge.

● Make sure that you have mounted the pressure transmitter (including accessories)

protected against vibration.

Refer to the information on vibration resistance in the section Technical specifications.

CAUTION

Hot surfaces resulting from hot process media

Risk of burns resulting from surface temperatures above 65 °C (149 °F).

● Take appropriate protective measures, for example contact protection.

● Make sure that protective measures do not cause the maximum permissible ambient

temperature to be exceeded. Refer to the information in Technical data (Page 199).

CAUTION

External stresses and loads

Damage to device by severe external stresses and loads (e.g. thermal expansion or pipe

tension). Process media can be released.

● Prevent severe external stresses and loads from acting on the device.

Note

Material compatibility

Siemens can provide you with support concerning selection of sensor components wetted by

process media. However, you are responsible for the selection of components. Siemens

accepts no liability for faults or failures resulting from incompatible materials.

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5.1 Basic safety instructions

5.1.1

Installation location requirements

WARNING

Insufficient air supply

The device may overheat if there is an insufficient supply of air.

● Install the device so that there is sufficient air supply in the room.

● Observe the maximum permissible ambient temperature. Refer to the information in the

section Technical data (Page 199).

NOTICE

Aggressive atmospheres

Damage to device through penetration of aggressive vapors.

● Ensure that the device is suitable for the application.

NOTICE

Direct sunlight

Increased measuring errors.

● Protect the device from direct sunlight.

Make sure that the maximum ambient temperature is not exceeded. Refer to the information

in the section Technical data (Page 199).

5.1.1.1

Use in maritime deployment

Note

For vibrations in the direction of the measuring cell diaphragm, the measuring accuracy of the

pressure transmitter with flush-mounted diaphragm can deviate no more than 0.2% from the

respective specification.

● Install the device so that no or almost no vibrations occur in the direction of the diaphragms.

● To avoid measuring values that fluctuate strongly, use the damping function.

For information on vibration resistance, refer to the marine approval certificate.

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5.2 Installing

5.1.2

Proper mounting

WARNING

Incorrect mounting at Zone 0

Risk of explosion in hazardous areas.

● Ensure sufficient tightness at the process connection.

● Observe the standard IEC/EN 60079-14.

NOTICE

Incorrect mounting

The device can be damaged, destroyed, or its functionality impaired through improper

mounting.

● Before installing ensure there is no visible damage to the device.

● Make sure that process connectors are clean, and suitable gaskets and glands are used.

● Mount the device using suitable tools. Refer to the information in Technical data

(Page 199).

NOTICE

Use of line and cable entries made of plastic in hazardous areas

Device damage caused by impact at temperatures below -20 °C.

● Make sure that the line and cable entries are protected from impacts.

5.2

Installing

5.2.1

Introduction

The pressure transmitter can be configured above or below the pressure sampling point. The

recommended configuration depends on the aggregate state of the process medium.

Installation configuration for gases

Install the pressure transmitter above the pressure sampling point.

Lay the pressure tubing with a constant gradient to the pressure sampling point, so that any

condensation produced can drain in the main line and thereby avoid corruption of the measured

values.

Installation configuration for vapor and liquid

Install the pressure transmitter below the pressure sampling point.

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5.2 Installing

3. For insulated systems, ensure that you insulate the device as far as possible to the lower

edge of the enclosure:

0D[

In this way, you avoid a defect in the device or the loss of explosion protection for Ex devices.

You can find the permissible temperature values in the section Technical data (Page 199).

4. To guarantee secure and vibration-free installation of the pressure transmitter, fasten it to

a mounting bracket (Page 49).

5.2.2

Fastening with the mounting bracket

Introduction

You mount the pressure transmitter with the mounting bracket as described below:

● On a mounting range

● On a vertical or horizontal pipe (Ø 50 to 60 mm)

When securing, observe the torques in the section Torques (Page 238).

Note

Install the device so that the pressure transmitter and the differential pressure lines are not

subject to different vibrations. Otherwise there is a danger that the differential pressure lines will

rupture.

Example 1: Pipe mounting of pressure transmitter (gauge pressure series)

The mounting bracket for the gauge pressure series includes, among other things:

●

2 screws

● One pipe clamp with nuts

● Washers

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5.2 Installing

Mount the pressure transmitter as follows:

Example 2: Pipe mounting of pressure transmitter (differential pressure series)

The mounting bracket for the differential pressure series includes, among other things:

●

4 screws

● One pipe clamp with nuts

● Washers

You can then mount the pressure transmitter in different positions:

5.2.3

Mounting hygienic version

To avoid formation of steam, mount the pressure transmitter as follows, for example:

Figure 5-1

Correct installation

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5.3 Installation (level)

Figure 5-2

Incorrect installation

● Ensure that the length of the dead space at the end of the process connection is smaller than

its diameter.

● To ensure optimal cleaning of the process plant, install the process connection without

offset (flush-mounted on inside) in the plant.

You can find additional information in the EHEDG Guidelines No. 10 and No. 37.

5.3

Installation (level)

Mounting location

Verify that the mounting location meets the following conditions:

● Accessible

● Close to the measuring point

● Vibration-free

● Within the permitted ambient temperature values

Protect the pressure transmitter from:

● Direct heat radiation

● Rapid temperature fluctuations

● Heavy contamination

● Mechanical damage

● Direct sunlight

Note

Select the height of the mounting flange such that the pressure transmitter is always mounted

below the lowest fill height to be measured.

Requirement

● You have compared the desired operating data with the data on the nameplate.

● You have adhered to the information on the remote seal during its installation.

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5.3 Installation (level)

Procedure

To install the pressure transmitter for level, proceed as follows:

1. Attach the seal to the container's mating flange.

Ensure that the seal is centrally positioned and that it does not restrict the movement of the

flange's seal diaphragm in any way. Otherwise, the seal of the process connection is not

guaranteed to be tight.

2. Screw on the pressure transmitter's flange.

3. Observe the installation position.

5.3.1

Mounting on the container

Mounting on open container

A line is not required when taking measurements in an open container since the negative side

is connected with the atmosphere.

Ensure that no dirt enters the open connection ports.

● Use, for example, threaded plug with vent valve 7MF4997-1CP.

Formula:

8SSHU UDQJH YDOXH

Lower range value: p_MA = ρ · g · h_U

Upper range value: p_ME = ρ · g · h_O

K₂

/RZHU UDQJH YDOXH

K₈

+

Measurement assembly on an open container

h_U

Lower filling level

Δp_MA Lower range value

h_O

Upper filling level

Δp_ME Upper range value

p

Pressure

ρ

Density of the measured medium in

the container

g

Acceleration due to gravity

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5.3 Installation (level)

Mounting on closed container

When taking measurements in a closed container without or with little condensate formation,

the negative pressure line is not filled.

Lay the line in such a way that condensation pockets do not form. If required, you need to install

a condensation container below the negative pressure line of the pressure transmitter.

Formula:

*DV ILOOHG QHJDWLYH

Lower range value: Δp_MA = ρ · g · h_U

SUHVVXUH OLQH

Upper range value: Δp_ME = ρ · g · h_O

0D[LPXP OHYHO

8SSHU UDQJH YDOXH

/RZHU UDQJH YDOXH

K

2

K₈

3UHVVXUH WUDQVPLWWHU

UHIHUHQFH OLQH

Measurement assembly on a closed container (no or little

condensate separation)

h_U

Lower filling level

Δp_MA Lower range value

h_O

Upper filling level

Δp_ME Upper range value

p

Pressure

ρ

Density of the measured medium in

the container

g

Acceleration due to gravity

When taking measurements in a closed container with strong condensate formation, you must

fill the negative pressure line (mostly with the condensate of the measured medium) and install

a condensate pot. Lock the device using the dual pneumatic block 7MF9017-..A.

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5.4 Installation with remote seal

To compensate the liquid column on the minus side, reset the zero point.

Formula:

&RQVWDQW

&RPSDULVRQ

Lower range value:

OHYHO

Δp_MA = g · (h_U · ρ - h_V · ρ')

0D[LPXP OHYHO

Upper range value:

Δp_MA = g · (h_O · ρ - h_V · ρ')

8SSHU UDQJH YDOXH

/LTXLG ILOOHG

QHJDWLYH SUHVVXUH OLQH

/RZHU UDQJH YDOXH

K_Y

'

K₂

K₈

3UHVVXUH WUDQVPLWWHU

-

UHIHUHQFH OLQH

Measurement assembly on a closed container (strong condensate

formation)

h_U

Lower filling level

Δp_MA Lower range value

h_O

Upper filling level

Δp_ME Upper range value

h_V

Gland distance

ρ

Density of the measured medium in

the container

p

Pressure

ρ '

Density of fluid in the negative pres-

sure line corresponds to the prevailing

temperature there

g

Acceleration due to gravity

The process connection on the negative side is a female thread ¹/₄-18 NPT or an oval flange.

Lay the line for the negative pressure using a seamless steel tube 12 mm x 1.5 mm.

5.4

Installation with remote seal

Notes

● Keep the measuring system in the factory packing until it is installed in order to protect it from

mechanical damage.

● When removing from the factory packing and installing: ensure that damage to and

mechanical deformations in the membrane are prevented.

● Never loosen the sealed filling screws on the remote seal and the measuring instrument.

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5.4 Installation with remote seal

5.4.1

Remote seal with capillary line

Notes

● Do not transport the measuring assembly (pressure transmitter, flange and capillary line) to

the capillary line.

● Do not bend the capillary lines. Otherwise there may be a leakage risk and the set-up time

of the measuring system is increased.

● A mechanical overload at the connection points between capillary line and remote seal or

between capillary line and pressure transmitter will lead to potential bending or breaking.

● Wind capillary lines that are too long with a radius of at least 300 mm.

● Fasten the capillary line such that there are no vibrations.

● Permissible height differences:

- In the case of remote seal measuring systems with silicon, glycerin or paraffin oil filling,

the height difference of H_1max. = 7 m must not be exceeded.

- When halocarbon oil is used as fill fluid, the maximum height difference may only be

H_1max. = 4 m; see installation type A and installation type B.

If a negative overpressure is observed during measurements, reduce the permissible height

difference.

Installation type for gauge pressure and level measurements (open containers)

Start of scale value:

p_LRV = ρ_FL * g * H_U - ρ_oil * g * H₁

+

Full-scale value:

+_R

p_URV = ρ_FL * g * H_O - ρ_oil * g * H

1

+_X

+

Installation type A: Pressure transmitter

above the measuring point

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5.4 Installation with remote seal

Start of scale value:

p_LRV = ρ_FL * g * H_U + ρ_oil * g * H₁

+

Full-scale value:

+_R

p_URV = ρ_FL * g * H_O + ρ_oil * g * H

1

+_X

+

Installation type B: Pressure transmitter

below the measuring point

H₁ ≤ 7 m (23 ft); with halocarbon oil as the filling liquid, only H₁ ≤ 4 m(13.1 ft)

Key

p_LRV

Start of scale value

p_URV

Full-scale value

ρ_FL

Density of the process medium in the container

ρ_oil

Density of the filling oil in the capillary line of the remote seal

g

Acceleration due to gravity

H_U

Lower filling level

H_O

Upper filling level

H₁

Distance container flange to pressure transmitter

For absolute pressure measurements (vacuum), install the pressure transmitter at least at the

height of the remote seal or below it (see installation types C).

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5.4 Installation with remote seal

Installation types for absolute pressure measurements (closed containers)

Start of scale value:

p_LRV = p_start + ρ_oil * g * H₁

Full-scale value:

+

p_URV = p_end + ρ_oil * g * H₁

S_DEV

Installation type C₁

Start of scale value:

p_LRV = p_start + ρ_oil * g * H₁

Full-scale value:

p_URV = p_end + ρ_oil * g * H₁

S_DEV

+

Installation type C₂

Always install pressure transmitter for absolute pressure below the measuring point: H₁ ≥

200 mm (7.9 inch)

Key

p_LRV

Start of scale value

p_URV

Full-scale value

p_start

Initial pressure in the container

p_end

Final pressure in the container

ρ_oil

Density of the filling oil in the capillary line of the remote seal

g

Acceleration due to gravity

H₁

Distance container flange to pressure transmitter

Note

Effects of temperature

Keep the following instructions in mind to minimize the effects of temperature in remote seal

measuring systems with differential pressure transmitter:

Install the device so that the positive and negative sides are symmetrical as far as ambient

effects and the ambient temperature are concerned.

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5.4 Installation with remote seal

Installation type for differential pressure and flow rate measurements

Start of scale value:

p_LRV = p_start - ρ_oil * g * H_V

Full-scale value:

+₉

p_URV = p_end - ρ_oil * g * H_V

Installation type D

Key

p_LRV

Start of scale value

p_URV

Full-scale value

p_start

Initial pressure in the container

p_end

Final pressure in the container

ρ_oil

Density of the filling oil in the capillary line of the remote seal

g

Acceleration due to gravity

H_V

Gland distance

H₁

Distance container flange to pressure transmitter

Installation types for level measurements (closed containers)

Reset the zero point after installation to compensate the liquid column on the minus side.

This measure applies to the following installation types:

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5.4 Installation with remote seal

H₁ ≤ 7 m (23 ft), for halocarbon oil, however only H1

≤ 4 m (13.1 ft)

Start of scale value:

p_LRV = ρ_FL * g * H_U - ρ_oil * g * H_V

Full-scale value:

p_URV = ρ_FL * g * H_O - ρ_oil * g * H_V

+

+

+₉

+_R

+_X

Installation type G

Pressure transmitter for differential

pressure above the upper measuring

point, no vacuum

Start of scale value:

p_LRV = ρ_FL * g * H_U - ρ_oil * g * H_V

Full-scale value:

+

p_URV = ρ_FL * g * H_O - ρ_oil * g * H_V

+₉

+_R

+_X

Installation type H

Below the lower measuring point

H₂ ≤ 7 m (23 ft); with halocarbon oil as the filling

liquid, only H₂ ≤ 4 m(13.1 ft)

+

Start of scale value:

p_LRV = ρ_FL * g * H_U - ρ_oil * g * H_V

+

+₉

Full-scale value:

+_R

+

p_URV = ρ_FL * g * H_O - ρ_oil * g * H_V

+_X

Installation type J

Between the measuring points, no

vacuum

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5.6 Rotating the display

4. Remove the display from the holder.

5. Leave the display cable plugged into the electronics.

6. Rotate the display to the desired position.

7. Press the display into the holder until it engages.

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5.7 Rotating the enclosure

5.7

Rotating the enclosure

Introduction

To make the device easier to operate in any mounting position, you have the option of adjusting

the position of the enclosure within a range of 360°.

① Retaining screw

One retaining screw ① for the aluminum enclosure and two retaining screws (front and back)

for the stainless steel enclosure prevent that the flat ribbon cable is damaged while rotating the

enclosure.

The flat ribbon cable connects the sensor to the electronics.

The tightening torques of the retaining screws are different for the aluminum enclosure and the

stainless steel enclosure. For the tightening torques of the retaining screws, refer to section

Torques (Page 238).

Requirement

You have a 2.5 mm Allen key.

Rotating the aluminum enclosure

1. Loosen the retaining screw ① by half a rotation.

2. Rotate the enclosure to the desired position (but no further than the end stop).

3. Tighten the retaining screw.

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Connecting

6.1 Basic safety instructions

WARNING

Lack of equipotential bonding

Danger of explosion through compensating currents or ignition currents through lack of

equipotential bonding.

For devices of intrinsic safety "db", "ec", "tb" or "tc" which are operated in a non-intrinsically

safe circuit, observe the following:

● Connect the device to the system via the equipotential bonding terminal.

Note: For devices of the intrinsic safety "ia", "ib" and "ic" type of protection, which are operated

in an intrinsically safe circuit, connection to the system via the equipotential bonding terminal

is not required.

WARNING

Improper laying of shielded cables

Risk of explosion through compensating currents between hazardous area and the

non-hazardous area.

● Shielded cables that cross into hazardous areas should be grounded only at one end.

● If grounding is required at both ends, use an equipotential bonding conductor.

WARNING

Connecting device in energized state

Risk of explosion in hazardous areas.

● Connect devices in hazardous areas only in a de-energized state.

Exceptions:

● Devices having the type of protection "Intrinsic safety Ex i" may also be connected in

energized state in hazardous areas.

● Exceptions for type of protection "Increased safety ec" (Zone 2) are regulated in the

relevant certificate.

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6.1 Basic safety instructions

WARNING

Incorrect selection of type of protection

Risk of explosion in hazardous areas.

This device is approved for various types of protection.

1. Select an intrinsic safety type of protection "ia", "ib", "ic" or non-intrinsic safety "db", "tb", "tc",

"ec".

2. Connect the device according to the selected type of protection.

3. When operating with non-intrinsically safe power supplies, make the intrinsically safe types

of protection permanently unrecognizable as in the example.

,,

* ([ LD ,,& 7

7

*D *E

,,

* ([ LD GE ,,& 7

7

*D *E

Figure 6-1

Nameplate example: Type 7MF0..0-

-.D..-Z + E20

NOTICE

Ambient temperature too high

Damage to cable sheath.

● At an ambient temperature ≥ 60 °C (140 °F), use heat-resistant cables suitable for an

ambient temperature at least 20 °C (36 °F) higher.

NOTICE

Condensation in the device

Damage to device through formation of condensation if the temperature difference between

transportation or storage and the mounting location exceeds 20 °C (36 °F).

● Before taking the device into operation, let the device adapt for several hours in the new

environment.

NOTICE

Incorrect measured values with incorrect grounding

The device must not be grounded using the "+" connection. It may otherwise malfunction and

be permanently damaged.

● If necessary, ground the device using the "-" connection.

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6.2 Connecting the device

Note

Electromagnetic compatibility (EMC)

You can use this device in industrial environments, households and small businesses.

For metal housings there is an increased electromagnetic compatibility compared to high-

frequency radiation. This protection can be increased by grounding the housing, see Technical

data (Page 199).

Note

Improvement of interference immunity

● Lay signal cables separate from cables with voltages > 60 V.

● Use cables with twisted wires.

● Keep device and cables at a distance from strong electromagnetic fields.

● Take account of the conditions for communication specified in the Technical data

(Page 199).

● Use shielded cables to guarantee the full specification according to HART/PA/FF/Modbus/

EIA-485/Profibus DP.

6.2

Connecting the device

6.2.1

Opening the device

① Safety catch (optional)

② Cover of the electrical cable compartment.

Figure 6-2

Rear view of pressure transmitter

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6.2 Connecting the device

1. Use a 3 mm Allen key to loosen the safety catch

①.

2. Unscrew the cover of the electrical cable compartment ②.

6.2.2

Connecting the device

˖

- Test +

① Supply unit with integrated load

⑥ Safety catch

② Supply voltage

⑦ Process connection

③ Cable gland

⑧ Protective conductor connector/

equipotential bonding terminal

④ Connecting terminals

⑨ Ground terminal

⑤ Test connector for DC measuring device

⑩ Devices with internal overvoltage

protection are marked here.

Figure 6-3

Example: Electrical connection with supply unit

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6.2 Connecting the device

1. Connect the device to the system via the existing protective ground connection

⑧ by

observing the torques.

- Use a cable with a diameter of 1 … 4 mm².

2. Insert the connecting cable through the cable gland ③.

3. Connect the wires to the connection terminals ④ "+" and "-", observing the polarity and the

torques.

- Use wires with a diameter of 0.5 ... 2.5 mm².

- If you use stranded wire used, you need a ferrule.

4. Apply the shield to the screw of the ground terminal ⑨.

The screw of the ground terminal is electrically connected to the external protective

conductor connection.

NOTICE

Incorrect measured values with incorrect grounding

The device must not be grounded using the "+" connection. It may otherwise malfunction

and be permanently damaged.

● If necessary, ground the device using the "-" connection.

5. For devices with intrinsically safe protection type, use a supply unit that corresponds to the

requirements of the relevant type of protection.

See also

Torques (Page 238)

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6.3 Connect the Han cable socket to the cable

6.2.3

Closing the device

① Cover over buttons

⑤ Blanking plug

② Cable gland

⑥ Safety catch (front)

③ Safety catch (back)

⑦ Cover (front)

④ Cover (rear) for electrical terminal compartment

Figure 6-4

View of the pressure transmitter: Left: Back right: Front view

1. Screw on the cover ④ and ⑦ as far as it will go.

Make sure that there is no gap between enclosure and cover.

2. Secure each cover with the cover catch ③ and ⑥ by removing the screw.

3. Close the cover over the buttons①.

4. Tighten the screw for the cover over the buttons.

6.3

Connect the Han cable socket to the cable

WARNING

Loss of the safety required for approval by using the Han plug

You may only use the Han plug for non-Ex devices; otherwise, the safety required for the

approval is not guaranteed.

Note

Observe the protection class of the Han plug when defining the protection class.

The contact parts for the cable socket are supplied.

For devices with a Han plug mounted on the enclosure, make the connection via the cable

socket.

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Connecting

6.4 Connect M12 cable socket to the cable

Requirement

● The terminal area of the cable socket is suitable for cables with diameters ranging from 6 to

12 mm.

● These cables use stranded wires with 1 mm² as single conductors ("+", "-" and ground).

● You are using a crimping tool from HARTING (article number 09 99 000 0110).

Procedure

1. Slide the sleeve and the screwed joint on the cable.

2. Strip approx. 8 mm of the cable ends.

3. Crimp the contact parts on the cable ends.

4. Assemble the cable socket.

I_A

Output current

U_H

Auxiliary power

,_$

8₊

Connector pin assignment with Han 7D or

Han 8D plug or cable socket

6.4

Connect M12 cable socket to the cable

WARNING

Loss of safety required for approval by using the M12 device plug.

You may only use the plug for non-Ex devices; otherwise, the safety required for the approval

is not guaranteed.

Note

A conductive connection must not exist between the shield and the connector housing.

Note

Observe the protection class of the M12 device plug when defining the protection class.

In devices where a plug is already mounted on the enclosure, the connection is made via a

cable socket.

1. Thread the parts of the cable socket as described by the manufacturer of the cable socket.

2. Strip approximately 18 mm of the bus cable ①.

SITRANS P320/P420 with 4 to 20 mA/HART

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Connecting

6.4 Connect M12 cable socket to the cable

3. Twist the shield.

4. Thread the shield in the insulating sleeve.

5. Draw 8 mm of shrink sleeve over the cable, wires and shield up to the reference edge ②.

6. Screw the cable ends and the shield in the pin insert.

7. Fasten the parts of the cable socket as described by the manufacturer.

Figure 6-5

Preparing the connecting cable

① Reference edge for stripping

③ Insulating sleeve over the shield

② Reference edge for the dimension

④ Shrink sleeve

specifications for cable assembly

Assignment

Layout for M12 device plug

Assignment diagram M12-cable socket

① M12 x 1 thread

① Positioning slot

② Positioning catch

1

+

1

+

2

Not connected

2

Not connected

3

-

3

-

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Operating

7

Introduction

You operate the device using the buttons.

If you have a device with a display, you can view the measured values, parameter values and

messages.

If you have a device without a display, you also have several functions available:

Commissioning the device without display (Page 89)

7.1

Buttons

The four buttons are located below the cover:

Figure 7-1

Top view

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Operating

7.2 Operating the device with display

7.2

Operating the device with display

7.2.1

Navigating in the views

You navigate in the views with the Buttons (Page 75) buttons:

Views

Buttons

Measurement view After the initialization, the measurement view is displayed.

1. Select a random measured value with the buttons

or

2. Change to the parameter view with the

button.

3. Return to the measurement view with the

button.

Parameter view

The "EDIT" symbol has been activated permanently.

1. Select a parameter with the buttons

or

2. Change to the edit view with the button

3. Return to the measurement view with the

button.

Edit view

The "EDIT" symbol flashes.

1. Change the parameter value with the

or

button.

2. Save the change with the button

You are in the parameter view.

3. Return to the measurement view with the

button.

If you do not change any parameters, you return from the edit view to the param-

eter view with the

button.

7.2.2

Measurement view

The measurement view shows the current measured values as well as status and diagnostic

messages:

① Name and unit of the measured value (alternating)

② Measured value

③ Measured value ID

④ Bar display

Figure 7-2

Example of measurement view

① shows the name of the measured value and the set unit as alternating values.

Measured value IDs ③ start with "P".

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Operating

7.2 Operating the device with display

The bar display shows the following information:

● The position of a measured value within the set measuring span (e.g. pressure).

● The position of the temperature value within the sensor limits.

● The scaling of the process values calculated from the pressure value (e.g. volume flow).

7.2.2.1

Display of measured values

The following measured values are always displayed:

● Pressure (P1)

● Sensor temperature (P2)

● Electronics temperature (P3)

● Percent of range (P9)

● Loop current (PA)

● Terminal voltage (PB)

The following values are calculated from the measured pressure value and are displayed

depending on your application:

● Level (P4)

● Volume (P5)

● Volume flow (P6)

● Mass flow (P7)

● Customized characteristic curve (P8)

Measured val-

Name of measured value

Meaning

ue ID

P1

PRESSURE

Pressure

PRESS GAUGE

Gauge pressure

PRESS ABS

Absolute pressure

P2

SENSOR TEMP

Sensor temperature

P3

ELECTR TEMP

Electronics temperature

P4

LEVEL

Level

P5

VOLUME

Volume

P6

VOLUME FLOW

Volume flow

P7

MASS FLOW

Mass flow

P8

USER DEFINED

Customized characteristic curve

P9

% OF RANGE

Percent of range

PA

LOOP CURRENT

Loop current

PB

CURR VOLTAGE

Terminal voltage

You use the "Start view" parameter [32] to select the measured value that is displayed as the

first measured value in the measurement view.

Start view [32] (Page 142)

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Operating

7.2 Operating the device with display

7.2.2.2

Navigating in the measurement view

Requirement

You have disabled the button lock.

Disabling button lock (Page 135)

Procedure

1. Use the

and buttons to navigate in the measurement view.

2. To switch to the parameter view, press the

button.

7.2.3

Parameter view

The parameter view shows the parameters, parameter values and the wizards of the device.

① Name and unit of the parameter (alternating)

② Parameter value

③ Parameter ID

④ "EDIT" symbol (permanently enabled)

Figure 7-3

Example of parameter view

For parameters with an associated unit, the parameter name and unit are displayed as

alternating values in ①. Example: Lower range value in mA.

7.2.3.1

List of parameters on the display

The parameters are displayed with parameter ID and parameter name.

Depending on the parameter settings of your device, some parameters are not visible.

Parame-

Parameter name on

Meaning

ter ID

the display

01

PRESS UNITS

Pressure units (Page 106)

02

LOWER RANGE

Set lower range value (without pressure applied) (Page 108)

03

UPPER RANGE

Set upper range value (without pressure applied) (Page 108)

04

DAMPING

Damping value (Page 110)

05

APPLICATION

Application ¹⁾ (Page 110)

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