Siemens SITRANS P500 Administrator guide

SITRANS
Pressure transmitter
SITRANS P500 with HART
Edition 04/2013
Compact Operating Instructions
Answers for industry.

1
English ··································································································· 3
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Polski ································································································· 124
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© Siemens AG 2013. All rights reserved
A5E02307339-03, 04/2013 3
SITRANS
Pressure transmitter
SITRANS P500 with HART
Compact Operating Instructions
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The
notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage
have no safety alert symbol. These notices shown below are graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of
injury to persons with a safety alert symbol may also include a warning relating to property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with
the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their
training and experience, are capable of identifying risks and avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products
and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage,
installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any
problems. The permissible ambient conditions must be complied with. The information in the relevant documentation must be observed.
1 Introduction
1.1 Purpose of this documentation
These instructions are a brief summary of important features, functions and safety information, and contain all information
required for safe use of the device. It is your responsibility to read the instructions carefully prior to installation and
commissioning. In order to use the device correctly, first review its principle of operation.
The instructions are aimed at persons who mechanically assemble the device, connect it electrically, and start it up.
To achieve optimum usage of the device, read the detailed version of the manual.
See also
Instructions and manuals (http://www.siemens.com/processinstrumentation/documentation)

SITRANS P500 with HART
4 A5E02307339-03, 04/2013
1.2 History
This history establishes the correlation between the current documentation and the valid firmware of the device.
The documentation for this revision is applicable for the following firmware:
Revision Firmware and hardware
identity nameplate
System integration Installation path for
PDM
Note
02
09/2010
FW: 35.01.00
HW: 11.01.01
PDM 6.01); Dev. Rev.3
DD; 01.00.00 Dev.
Rev.1
SITRANS P500
03
04/2013
FW: 35.02.00
HW: 11.01.01
PDM 6.01); Dev. Rev.3
DD; 01.00.00 Dev.
Rev.1
SITRANS P500
1) to SP05
1.3 Purpose
Overview
Depending on the variant, the pressure transmitter measures corrosive, non-corrosive and hazardous gases, vapors and
liquids.
With appropriate configuration, you can also use the differential pressure transmitter for the following measurement types:
● Level
● Volume
● Mass
● Volume flow
● Mass flow rate
The output signal is always a load-independent direct current between 4 and 20 mA upon which a HART protocol is
superimposed.
You can install the "Intrinsically safe" or "Flameproof enclosure" version of the transmitter in hazardous areas. The devices
have an EC type-examination certificate and meet the regulations applicable to them, for example, the harmonized
CENELEC standards in Europe.
Transmitters with remote seals of different shapes can be delivered for special applications. For example, measuring high-
viscosity substances is a special application.
Operate the device in accordance with the specifications in section Technical data (Page 28).
For additional information, please refer to the operating instructions for the device.
1.4 Checking the consignment
1. Check the packaging and the device for visible damage caused by inappropriate handling during shipping.
2. Report any claims for damages immediately to the shipping company.
3. Retain damaged parts for clarification.
4. Check the scope of delivery by comparing your order to the shipping documents for correctness and completeness.

SITRANS P500 with HART
A5E02307339-03, 04/2013 5
WARNING
Using a damaged or incomplete device
Danger of explosion in hazardous areas.
● Do not use damaged or incomplete devices.
1.5 Nameplate layout
Nameplate with general information
The nameplate with the order number and other important data, such as the design details and technical data can be found
on the side of the enclosure.
① Order number
② Serial number
twistlock screw
Schutzart IP 66/68
Rated pressure : PN 160
Measuring span : 31.25 - 6250 mbar
1. 4404 1. 4404 FKM (FPM) Silicone oil
Mat.: Connec. Diaphr. O-ring Filling
V : DC 10.6-44 V (non IS) 4-20 mA HART
H
F.-Nr. B1-F908-9000001
7MF5603-1DA00-0AD1-Z +E00
Transmitter for differential pressure
0045
PED/SEP
HW: 01.01.00 / FW: 35.00.10
made in France
D-76181 Karlsruhe
SIEMENS AG
SITRANS P500
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+:FKDQJHVDIIHFWLQJPHFKDQLFDOV\VWHP
+:FKDQJHVDIIHFWLQJHOHFWURQLFV
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'HYLFHPDUNLQJ
+:DDEEFF ):DDEEFF
Example of a nameplate
③ Firmware (FW) and
hardware (HW)
numbers
Nameplate with approval information
The nameplate with approval information is on the opposite side. For the Ex-version of the transmitter, the information on the
respective certificate is also listed.
twistlock screw
II 1/2 G Ex d ia IIC T4/T6
Temperature class T4
T : -40...+85°C (-40...+185°F)
a
U=45V
Observe EC-Type Examination Certificate !
BVS09ATEXE027
T : -40...+60°C (-40...+140°F)
a
Temperature class T6
D-76181 Karlsruhe
SIEMENS AG
SITRANS P500
,,*([GLD,,&77
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Figure 1-1 Example of a nameplate
① Characteristics of the hazardous area
①a Category of the operating range

SITRANS P500 with HART
6 A5E02307339-03, 04/2013
①b Type of protection
①c Group (gas, dust)
①d Maximum surface temperature (temperature class)
1.6 Transportation and storage
To guarantee sufficient protection during transport and storage, observe the following:
● Keep the original packaging for subsequent transportation.
● Devices/replacement parts should be returned in their original packaging.
● If the original packaging is no longer available, ensure that all shipments are properly packaged to provide sufficient
protection during transport. Siemens cannot assume liability for any costs associated with transportation damages.
CAUTION
Insufficient protection during storage
The packaging only provides limited protection against moisture and infiltration.
● Provide additional packaging as necessary.
Special conditions for storage and transportation of the device are listed in "Technical data" (Page 28).
1.7 Notes on warranty
The contents of this manual shall not become part of or modify any prior or existing agreement, commitment or legal
relationship. The sales contract contains all obligations on the part of Siemens as well as the complete and solely applicable
warranty conditions. Any statements regarding device versions described in the manual do not create new warranties or
modify the existing warranty.
The content reflects the technical status at the time of publishing. Siemens reserves the right to make technical changes in
the course of further development.
2 Safety information
2.1 Precondition for use
This device left the factory in good working condition. In order to maintain this status and to ensure safe operation of the
device, observe these instructions and all the specifications relevant to safety.
Observe the information and symbols on the device. Do not remove any information or symbols from the device. Always
keep the information and symbols in a completely legible state.
Symbol Explanation
Consult operating instructions
2.1.1 Laws and directives
Observe the test certification, provisions and laws applicable in your country during connection, assembly and operation.
These include, for example:
● National Electrical Code (NEC - NFPA 70) (USA)
● Canadian Electrical Code (CEC) (Canada)
Further provisions for hazardous area applications are for example:
● IEC 60079-14 (international)
● EN 60079-14 (EC)

SITRANS P500 with HART
A5E02307339-03, 04/2013 7
2.1.2 Conformity with European directives
The CE mark on the device is a sign of conformity with the following European directives:
Electromagnetic Compatibility EMC
2004/108/EC
Directive of the European Parliament and of the Council on the approximation of the
laws of the Member States relating to electromagnetic compatibility and repealing
Directive 89/336/EEC.
Atmosphère explosible ATEX
94/9/EC
Directive of the European Parliament and the Council on the approximation of the
laws of the Member States concerning equipment and protective systems intended
for use in potentially explosive atmospheres.
Pressure Equipment Directive PED
97/23/EC
Directive of the European Parliament and of the Council on the approximation of the
laws of the Member States concerning pressure equipment.
The standards applied can be found in the EC declaration of conformity for the device.
2.2 Improper device modifications
WARNING
Improper device modifications
Danger to personnel, system and environment can result from modifications to the device, particularly in hazardous areas.
● Only carry out modifications that are described in the instructions for the device. Failure to observe this requirement
cancels the manufacturer's warranty and the product approvals.
2.3 Requirements for special applications
Due to the large number of possible applications, each detail of the described device versions for each possible scenario
during commissioning, operation, maintenance or operation in systems cannot be considered in the instructions. If you need
additional information not covered by these instructions, contact your local Siemens office or company representative.
Note
Operation under special ambient conditions
We highly recommend that you contact your Siemens representative or our application department before you operate the
device under special ambient conditions as can be encountered in nuclear power plants or when the device is used for
research and development purposes.
2.4 Use in hazardous areas
Qualified personnel for hazardous area applications
Persons who install, assemble, commission, operate and service the device in a hazardous area must have the following
specific qualifications:
● They are authorized, trained or instructed in operating and maintaining devices and systems according to the safety
regulations for electrical circuits, high pressures, aggressive and hazardous media.
● They are authorized, trained, or instructed in carrying out work on electrical circuits for hazardous systems.
● They are trained or instructed in maintenance and use of appropriate safety equipment according to the pertinent safety
regulations.
WARNING
Unsuitable device for the hazardous area
Danger of explosion.
● Only use equipment that is approved for use in the intended hazardous area and labelled accordingly.
See also
Technical data (Page 28)

SITRANS P500 with HART
8 A5E02307339-03, 04/2013
WARNING
Loss of safety of device with type of protection "Intrinsic safety Ex i"
If the device has already been operated in non-intrinsically safe circuits or the electrical specifications have not been
observed, the safety of the device is no longer ensured for use in hazardous areas. There is a danger of explosion.
● Connect the device with type of protection "Intrinsic safety" solely to an intrinsically safe circuit.
● Observe the specifications for the electrical data on the certificate and in Chapter "Technical data (Page 28)".
WARNING
Use of incorrect device parts in potentially explosive environments
Devices and their associated device parts are either approved for different types of protection or they do not have
explosion protection. There is a danger of explosion if device parts (such as covers) are used for devices with explosion
protection that are not expressly suited for this type of protection. If you do not adhere to these guidelines, the test
certificates and the manufacturer warranty will become null and void.
● Use only device parts that have been approved for the respective type of protection in the potentially explosive
environment. Covers that are not suited for the "explosion-proof" type of protection are identified as such by a notice
label attached to the inside of the cover with "Not Ex d Not SIL".
● Do not swap device parts unless the manufacturer specifically ensures compatibility of these parts.
WARNING
Risk of explosion due to electrostatic charge
To prevent the build-up of an electrostatic charge in a hazardous area, the key cover must be closed during operation and
the screws tightened.
The key cover may be opened temporarily at any time for the purposes of operating the transmitter, even during plant
operation; the screws should then be tightened again.
NOTICE
Electrostatic-sensitive devices
The device contains electrostatic-sensitive devices (ESD). ESD can be destroyed by voltages far too low to be detected by
humans. These voltages can occur if you simply touch a component part or the electrical connections of a module without
being electrostatically discharged. The damage to a module caused by overvoltage cannot normally be detected
immediately; it only becomes apparent after a longer period of operating time has elapsed.
Protective measures against the discharge of static electricity:
● Make sure that no power is applied.
● Before working with modules, make sure that you discharge static from your body, for example by touching a grounded
object.
● Devices and tools used must be free of static charge.
● Hold modules only by their edges.
● Do not touch connector pins or conductor tracks on a module with the ESD notice.
3 Install
3.1 Basic safety instructions
WARNING
Wetted parts unsuitable for the process media
Danger of injury or damage to device.
Hot, toxic and corrosive media could be released if the process medium is unsuitable for the wetted parts.
● 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 28).

SITRANS P500 with HART
A5E02307339-03, 04/2013 9
WARNING
Unsuitable connecting parts
Danger 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.
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.
WARNING
Exceeded maximum permissible operating pressure
Danger of injury or poisoning.
The maximum permissible operating pressure depends on the device version. The device can be damaged if the operating
pressure is exceeded. Hot, toxic and corrosive process media could be released.
● Make sure that the device is suitable for the maximum permissible operating pressure of your system. Refer to the
information on the nameplate and/or in "Technical data (Page 28)".
WARNING
Exceeded maximum ambient or process media temperature
Danger of explosion in hazardous areas.
Device damage.
● Make sure that the maximum permissible ambient and process media temperatures of the device are not exceeded.
Refer to the information in Chapter "Technical data (Page 28)".
WARNING
Open cable inlet or incorrect cable gland
Danger of explosion in hazardous areas.
● Close the cable inlets for the electrical connections. Only use cable glands or plugs which are approved for the relevant
type of protection.
WARNING
Incorrect conduit system
Danger of explosion in hazardous areas as result of open cable inlet or incorrect conduit system.
● In the case of a conduit system, mount a spark barrier at a defined distance from the device input. Observe national
regulations and the requirements stated in the relevant approvals.
WARNING
Incorrect mounting at Zone 0
Danger of explosion in hazardous areas.
● Ensure sufficient tightness at the process connection.
● Observe the standard IEC/EN 60079-14.

SITRANS P500 with HART
10 A5E02307339-03, 04/2013
WARNING
Danger with "flameproof enclosure" protection
Danger 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 the fixed parts.
● Ensure that there is a space of at least 40 mm between the flameproof joint and the fixed parts.

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① Flameproof joint
WARNING
Loss of explosion protection
Danger of explosion in hazardous areas if the device is open or not properly closed.
● Close the device as described in Chapter "Connecting the device (Page 17)".
WARNING
Use of incorrect device parts in potentially explosive environments
Devices and their associated device parts are either approved for different types of protection or they do not have
explosion protection. There is a danger of explosion if device parts (such as covers) are used for devices with explosion
protection that are not expressly suited for this type of protection. If you do not adhere to these guidelines, the test
certificates and the manufacturer warranty will become null and void.
● Use only device parts that have been approved for the respective type of protection in the potentially explosive
environment. Covers that are not suited for the "explosion-proof" type of protection are identified as such by a notice
label attached to the inside of the cover with "Not Ex d Not SIL".
● Do not swap device parts unless the manufacturer specifically ensures compatibility of these parts.
CAUTION
Hot surfaces resulting from hot process media
Danger of burns resulting from surface temperatures above 70 °C (155 °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 Chapter "Technical data (Page 28)".
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.

SITRANS P500 with HART
A5E02307339-03, 04/2013 11
3.1.1 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 28)".
CAUTION
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 28).
3.1.2 Proper mounting
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 Chapter "Technical data (Page 28)", for example
installation torques requirements.
CAUTION
Loss of degree of protection
Damage to device if the enclosure is open or not properly closed. The degree of protection specified on the nameplate or in
Chapter "Technical data (Page 28)" is no longer guaranteed.
● Make sure that the device is securely closed.
See also
Connecting the device (Page 17)

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12 A5E02307339-03, 04/2013
3.2 Disassembly
WARNING
Incorrect disassembly
The following dangers may result through incorrect disassembly:
- Injury through electric shock
- Danger through emerging media when connected to the process
- Danger of explosion in hazardous area
In order to disassemble correctly, observe the following:
● Before starting work, make sure that you have switched off all physical variables such as pressure, temperature,
electricity etc. or that they have a harmless value.
● If the device contains dangerous media, it must be emptied prior to disassembly. Make sure that no environmentally
hazardous media are released.
● Secure the remaining connections so that no damage can result if the process is started unintentionally.
3.3 Installation (except level)
3.3.1 Assembly
Fastening without the mounting bracket
You can fasten the transmitter directly on both pressure caps.
Fastening with the mounting bracket
You can use a tube clamp to fasten the mounting bracket to a horizontal or vertical mounting tube of diameter 50 mm (2 ").
Alternatively you can attach the mounting bracket to the wall.
Fasten the transmitter mounting bracket using the four screws provided.
Figure 3-1 Fastening the transmitter on the mounting bracket with horizontal differential pressure lines

SITRANS P500 with HART
A5E02307339-03, 04/2013 13
Figure 3-2 Fastening the transmitter on the mounting bracket with vertical differential pressure lines
3.4 "Level" installation
3.4.1 Installation for level
Note
Seals are required for the installation. The seals must be compatible with the medium to be measured.
Seals are not included in the delivery.
Procedure
To install the transmitter for level, proceed as follows:
1. Attach the seal to the container's mating flange.
Ensure that the seal is centrically positioned and that it does not restrict the movement of the flange's seal diaphragm in
any way as otherwise the tightness of the process connection is not guaranteed.
2. Screw on the transmitter's flange.
3. Observe the installation position.
3.4.2 Connection of the negative pressure line to the closed vessel
When taking measurements in a closed container without or with little condensation formation, the negative pressure line is
not filled.
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Formula:
Start of scale value
ΔpMA = ρ · g · hU
Full scale value
ΔpME = ρ · g · hO

SITRANS P500 with HART
14 A5E02307339-03, 04/2013
hU Start of scale value ΔpMA Start of scale value to be adjusted
hO Full scale value ΔpME Full scale value to be adjusted
p Pressure ρ Density of the measured medium in the container
g Acceleration due to gravity
Measurement assembly on a closed container:
no or little condensation separation
When taking measurements in a closed container with strong condensation formation, you must fill the negative pressure
line (mostly with the condensation of the measured medium) and install a condensation pot.
For measurement on open vessels there is no need to connect the minus pipework, since the minus side is open to the
atmosphere.
4 Connecting
4.1 Basic safety instructions
WARNING
Unsuitable cables and/or cable glands
Danger of explosion in hazardous areas.
● Only use suitable cables and cable glands complying with the requirements specified in Chapter "Technical data
(Page 28)".
● Tighten the cable glands in accordance with the torques specified in Chapter "Technical data (Page 28)".
● When replacing cable glands use only cable glands of the same type.
● After installation check that the cables are seated firmly.
WARNING
Hazardous contact voltage in versions with 4-conductor extension
Danger of electrocution in case of incorrect connection.
● For the electrical connection, refer to the information in Chapter "Technical data (Page 28)".
WARNING
Improper power supply
Danger of explosion in hazardous areas as result of incorrect power supply, e.g. using direct current instead of alternating
current.
● Connect the device in accordance with the specified power supply and signal circuits. The relevant specifications can
be found in the certificates, in Chapter "Technical data (Page 28)" or on the nameplate.
WARNING
Unsafe extra-low voltage
Danger of explosion in hazardous areas due to voltage flashover.
● Connect the device to an extra-low voltage with safe isolation (SELV).

SITRANS P500 with HART
A5E02307339-03, 04/2013 15
WARNING
Lack of equipotential bonding
Danger of explosion through compensating currents or ignition currents through lack of equipotential bonding.
● Ensure that the device is potentially equalized.
Exception: It may be permissible to omit connection of the equipotential bonding for devices with type of protection
"Intrinsic safety Ex i".
WARNING
Unprotected cable ends
Danger of explosion through unprotected cable ends in hazardous areas.
● Protect unused cable ends in accordance with IEC/EN 60079-14.
WARNING
Improper laying of shielded cables
Danger of explosion through compensating currents between hazardous area and the non-hazardous area.
● Only ground shielded cables that run into the hazardous area at one end.
● If grounding is required at both ends, use an equipotential bonding conductor.
WARNING
Connecting device in energized state
Danger of explosion in hazardous areas.
● Connect devices in hazardous areas only in a de-energized state.
Exceptions:
● Circuits of limited energy may also be connected in the energized state in hazardous areas.
● Exceptions for type of protection "Non-sparking nA" (Zone 2) are regulated in the relevant certificate
WARNING
Incorrect selection of type of protection
Danger of explosion in areas subject to explosion hazard.
This device is approved for several types of protection.
1. Decide in favor of one type of protection.
2. Connect the device in accordance with the selected type of protection.
3. In order to avoid incorrect use at a later point, make the types of protection that are not used permanently
unrecognizable on the nameplate.
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 (68 °F) higher.
NOTICE
Incorrect measured values with incorrect grounding
The device must not be grounded via the "+" connection. It may otherwise malfunction and be permanently damaged.
● If necessary, ground the device using the "-" connection.

SITRANS P500 with HART
16 A5E02307339-03, 04/2013
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 Chapter "Connecting the device (Page 17)".
Note
Improvement of interference immunity
● Lay signal cables separate from cables with voltages > 60 V.
● Use cables with twisted wires.
● Keep device and cables in distance to strong electromagnetic fields.
● Use shielded cables to guarantee the full specification according to HART.
● Refer to HART communication information in Chapter "Technical data (Page 28)".

SITRANS P500 with HART
A5E02307339-03, 04/2013 17
4.2 Connecting the device
Opening the device
1. Unscrew the cover of the electrical cable compartment. An identification text "FIELD TERMINAL" is provided at the side
of the housing.
Connecting the device
1. Insert the connecting cable through the cable gland ⑥.
2. Connect the device to the system with the protective conductor connection ⑤.
3. Connect the wires to the connecting terminals ④ "+" and "-".
Observe the polarity when doing this. If necessary, ground the device using the "-" connection by connecting the
"-" connection to the ground terminal ③.
4. If necessary, ground the shield to the screw of the ground terminal ④. This is electrically connected with the external
protective conductor connection.
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resistor
④Connecting terminals
② Auxiliary power ⑤Protective conductor connector/equipotential bonding terminal
③ Ground terminal ⑥Cable entry for auxiliary power/analog output
Figure 4-1 Schematic electrical connection

SITRANS P500 with HART
18 A5E02307339-03, 04/2013
Closing the device
1. Screw the covers ②⑤ back on as far as they will go.
2. Secure each cover with the cover catch ③.
3. Close the key cover ①.
4. Tighten the screws in the key cover.
5. Check the tightness of the blanking plugs ④ and cable gland ⑥ in accordance with the degree of protection.






① Key cover ④ Blanking plug
② Cover (front), optionally with inspection window ⑤ Cover (rear) for electrical terminal compartment
③ Door contacts (front and rear)
Optional: The installed cover catches depend
on the type of protection.
⑥ Cable gland
Figure 4-2 View of the transmitter: Left: Front right: View from rear
5 Commissioning
5.1 Basic safety instructions
DANGER
Toxic gases and liquids
Danger of poisoning when the device is vented.
If toxic process media are measured, toxic gases and liquids can be released when the device is vented.
● Before venting ensure that there are no toxic gases and liquids in the device. Take the appropriate safety measures.