Siemens SITRANS P DS III User manual

SITRANS P DS III
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
SITRANS
Pressure transmitter
SITRANS P DS III
Service Manual
7MF4.33.. 7MF4.34.. 7MF4.35..
06/2014
A5E34219855-01
Introduction
1
Safety notes
2
Description
3
Connecting
4
Maintenance and servicing
5
Technical specifications
6
Ordering data for spare
parts/accessories
7
Appendix
A

Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: A5E34219855
Ⓟ06/2014 Subject to change
Copyright © Siemens AG 2014.
All rights reserved
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.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01 5
Table of contents
1 Introduction............................................................................................................................................. 7
1.1 Purpose of this documentation ......................................................................................................7
1.2 Product information........................................................................................................................7
1.3 History ............................................................................................................................................7
1.4 Checking the consignment.............................................................................................................8
1.5 Purpose..........................................................................................................................................8
1.6 Checking the compatibility of the application electronics ..............................................................9
1.7 Transportation and storage..........................................................................................................11
1.8 Notes on warranty ........................................................................................................................12
2 Safety notes.......................................................................................................................................... 15
2.1 Precondition for use .....................................................................................................................15
2.1.1 Laws and directives .....................................................................................................................15
2.1.2 Conformity with European directives ...........................................................................................15
2.2 Improper device modifications .....................................................................................................15
2.3 Use in hazardous areas ...............................................................................................................16
3 Description............................................................................................................................................ 19
3.1 Structure.......................................................................................................................................19
3.2 Nameplate layout .........................................................................................................................20
3.3 Measuring point label layout ........................................................................................................21
4 Connecting ........................................................................................................................................... 23
4.1 Basic safety instructions ..............................................................................................................23
4.2 Connecting the device .................................................................................................................26
5 Maintenance and servicing.................................................................................................................... 29
5.1 Basic safety instructions ..............................................................................................................29
5.2 Defining the maintenance interval................................................................................................32
5.3 Checking the gaskets...................................................................................................................33
5.4 Display in case of a fault ..............................................................................................................34
5.5 Changing the measuring cell and application electronics............................................................34
5.6 User data following replacement..................................................................................................35
5.7 Replacing parts ............................................................................................................................40
5.7.1 Guarantee information .................................................................................................................40
5.7.2 Exploded view of the device ........................................................................................................40
5.7.3 Replacing the connection board ..................................................................................................41

Table of contents
SITRANS P DS III
6Service Manual, 06/2014, A5E34219855-01
5.7.4 Replacing the pushbutton module .............................................................................................. 43
5.7.5 Replacing the display .................................................................................................................. 45
5.7.6 Replacing the application electronics.......................................................................................... 47
5.7.7 Replacing the measuring cell...................................................................................................... 49
5.8 Cleaning ...................................................................................................................................... 51
5.8.1 Servicing the remote seal measuring system ............................................................................. 52
5.9 Return procedure ........................................................................................................................ 53
5.10 Disposal....................................................................................................................................... 54
6 Technical specifications ........................................................................................................................ 55
7 Ordering data for spare parts/accessories ............................................................................................. 57
A Appendix .............................................................................................................................................. 65
A.1 Certificate .................................................................................................................................... 65
A.2 Technical support........................................................................................................................ 65
A.3 Repair report for installation of spare parts................................................................................. 67
Glossary ............................................................................................................................................... 69
Index .................................................................................................................................................... 73

SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01 7
Introduction
1
1.1
Purpose of this documentation
These instructions contain all information that you will require to replace the application
electronics, measuring cell, and connection board of the device.
For information about the safe usage of the device, refer to the detailed version of these
instructions and corresponding safety instructions on the electronic data medium.
Read these instructions carefully before you start any service and maintenance work. In
order to use the device correctly, first make yourself acquainted with its principle of
operation.
Readership of these instructions are service and maintenance technicians.
1.2
Product information
The programming manual is an integral part of the CD, which is either supplied or can be
ordered. The programming manual is also available on the Siemens homepage.
On the CD, you will also find the catalog extract with the ordering data, the Software Device
Install for SIMATIC PDM for additional installation, and the required software.
See also
Product information on SITRANS P in the Internet (http://www.siemens.com/sitransp)
Catalog process instrumentation (http://www.siemens.com/processinstrumentation/catalogs)
1.3
History
This history establishes the correlation between the current documentation and the valid
firmware of the device.
The documentation of this edition applies to the following firmware:
Edition
Firmware identifier nameplate
System integration
Installation path for PDM
06/2014 HART:
FW: 11.03.03, FW: 11.03.04,
FW: 11.03.05, FW: 11.03.06
PA: FW: 301.01.10
FF: FW: 11.01.01
SIMATIC PDM 8.x and
previous versions
SITRANS P DSIII.2

Introduction
1.4 Checking the consignment
SITRANS P DS III
8Service Manual, 06/2014, A5E34219855-01
1.4
Checking the consignment
1. Check the packaging and the spare parts for visible damage caused by inappropriate
handling during shipping.
2. Report any claims for damages immediately to the shipping company.
3. Retain the damaged parts for clarification.
4. Check the scope of delivery by comparing your order with the shipping documents for
correctness and completeness.
WARNING
Using damaged or incomplete spare parts
Danger of explosion in hazardous areas.
•Do not use damaged or incomplete spare parts.
1.5
Purpose
Overview
Depending on the version, a transmitter measures corrosive, non-corrosive and hazardous
gases, vapors and liquids.
You can use the transmitter for the following types of measurement:
●Gauge pressure
●Absolute pressure
●Differential pressure
With appropriate parameter settings and the necessary add-on parts (e.g. flow orifices and
remote seals), the pressure transmitter can also be used for the following measurements:
●Level
●Volume
●Mass
●Volume of flow
●Mass flow rate
The output signal is always a load-independent direct current between 4 and 20 mA.
You can install the "intrinsically-safe" or "explosion-proof" version of the transmitter in
hazardous areas. The devices have an EC type examination certificate and comply with the
appropriate harmonized European CENELEC directives.
Transmitters with remote seals of different shapes can be delivered for special applications.
For example, measuring high-viscosity substances is a special application.

Introduction
1.6 Checking the compatibility of the application electronics
SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01 9
Operate the device in accordance with the "Technical specifications" chapter in the operating
instructions.
For additional information, refer to the operating instructions for the device.
1.6
Checking the compatibility of the application electronics
1. The table shown below indicates whether the new application electronics matches the
device.
2. Check the product version on the application electronics sticker.
3. Check the compatibility mark on the nameplate of the device.
Table 1- 1 The following table is valid for: SITRANS P DS III with HART (7MF4.33..)
Product version (ES)
Compatibility mark
Remark
007 to 025 K = 01 Replacement not possible
030 to 035 K = 01 Replacement possible
Table 1- 2 The following table is valid for:
SITRANS P DS III with PA (7MF4.34..) and SITRANS P DS III with FF (7MF4.35..)
Product version (ES)
Compatibility mark
Remark
001 to 015 K = 01 Replacement possible

Introduction
1.6 Checking the compatibility of the application electronics
SITRANS P DS III
10 Service Manual, 06/2014, A5E34219855-01
Example of application electronics for
SITRANS P DS III with PA and
FF
Example of application electronics for
SITRANS P DS III with HART
①Product version (ES)
①
Compatibility mark
Figure 1-1 Compatibility mark on the nameplate

Introduction
1.7 Transportation and storage
SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01 11
Figure 1-2 Example of incrementing of product version and compatibility mark and their possible
combinations for future developments
See also
Nameplate layout (Page 20)
1.7
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, please ensure that all shipments are
sufficiently protected during transport by the replacement packaging. Siemens accepts no
liability for additional costs resulting from damage in transit.
CAUTION
Insufficient protection during storage
The packaging only provides limited protection against moisture and infiltration.
•Provide additional packaging as necessary.
Information on special conditions for storage and transportation of the device and spare
parts can be found in the "Technical specifications" chapter in the operating instructions.

Introduction
1.8 Notes on warranty
SITRANS P DS III
12 Service Manual, 06/2014, A5E34219855-01
1.8
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.

Introduction
1.8 Notes on warranty
SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01 13

SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01 15
Safety notes
2
2.1
Precondition for use
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)
2.1.2
Conformity with European directives
The device complies with the European directives even following the use of replacement
parts.
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.

Safety notes
2.3 Use in hazardous areas
SITRANS P DS III
16 Service Manual, 06/2014, A5E34219855-01
2.3
Use in hazardous areas
Qualified personnel for hazardous area applications
Persons who install, connect, 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
Loss of the safety of the device with type of protection "Intrinsic safety Ex i"
If the device has already been operated in non-intrinsically safe circuits or the information
on the electrical specifications have been ignored, the safety of the device is no longer
ensured for use in hazardous areas. There is a danger of explosion.
•Connect the device in Intrinsic Safety type of protection solely to an intrinsically safe
circuit.
•Observe the information on the electrical specifications in the certificate and in the
"Technical specifications" chapter in the operating instructions.
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.

Safety notes
2.3 Use in hazardous areas
SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01 17
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
pressure transmitter, even during plant operation; the screws should then be tightened
again.

Safety notes
2.3 Use in hazardous areas
SITRANS P DS III
18 Service Manual, 06/2014, A5E34219855-01

SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01 19
Description
3
3.1
Structure
Depending on a customer-specific order, the device comprises different parts.
①
Key cover
⑧
Cable inlet, optionally with cable gland
②
Cover (front), optionally with inspection window
⑨
Cover (rear) for electrical terminal compartment
③
Display (optional)
⑩
Electrical terminal compartment
④
Measuring point label
⑪
Protective conductor connector/equipotential
bonding terminal
⑤
Retaining screw; twist proofing of the measuring cell
in relation to the electronics enclosure
⑫
Nameplate (approval information)
⑥
Process connection
⑬
Blanking plug
⑦
Nameplate (general information)
Figure 3-1 View of the transmitter: Left: Front right: Rear view
●The electronics enclosure is made of die cast aluminum or precision cast stainless steel.
●The housing has a removable circular cover at the front and the back.
●Depending on the device version, the front cover ②may be designed as an inspection
window. You can read the measured values straight off the digital display through this
inspection window.
●The cable inlet ⑧to the electrical terminal compartment is at the side; either the left or
right-hand one can be used. The unused opening is closed with a blanking plug ⑬.
●The protective conductor terminal/equipotential bonding terminal ⑪is located at the back
of the enclosure.

Description
3.2 Nameplate layout
SITRANS P DS III
20 Service Manual, 06/2014, A5E34219855-01
●The electrical terminal compartment ⑩for the auxiliary power and shield is accessible
when you remove the back cover ⑨.
●The measuring cell with a process connection ⑥is located in the lower section of the
enclosure. This measuring cell is secured against twisting by a retaining screw ⑤.
Thanks to the modular design of the transmitter, the measuring cell and application
electronics or connection board can be replaced if required.
●On the upper face of the enclosure you can see crosshead screws which secure the key
cover ①, under which there are 3 keys for local operation.
3.2
Nameplate layout
Nameplate with general information
The nameplate bearing the Order No. and other important information, such as design
details and technical data, is on the side of the enclosure.
①
Order number (machine-readable product
code)
②
Serial number
Figure 3-2 Example of a nameplate