Baker Hughes Druck DPS 8000 Series User manual

Druck.com
DPS 8000 Series
CAN bus Pressure Transducer
Instruction Manual

Copyright 2011 Baker Hughes Company.
English–DPS 8000 Instruction Manual | i
Safety
The manufacturer has designed this sensor to be safe when operated using the procedures
detailed in this manual. Do not use this sensor for any other purpose than that stated.
This publication contains operating and safety instructions that must be followed for safe
operation and to maintain the sensor in a safe condition. The safety instructions are either
warnings or cautions issued to protect the user and the equipment from injury or damage.
Use qualified1 personnel and good engineering practice for all procedures in this publication.
Toxic Materials
There are no known toxic materials used in this sensor.
Maintenance
The sensor must be maintained using the manufacturer’s procedures and these should be carried
out by authorized service agents or the manufacturer’s service departments.
Druck.com
For technical advice contact the manufacturer.
Symbols
Abbreviations
The following abbreviations are used in this manual.
WARNING Do not apply pressure greater than the maximum safe working
pressure to the sensor.
1 A qualified technician must have the necessary technical knowledge, documentation, special test
equipment and tools to carry out the required work on this equipment.
Symbol Description
This equipment meets the requirements of all relevant European safety directives. The
equipment carries the CE mark.
This symbol, in this manual, indicates a hazardous operation.
Do not dispose of this product as household waste. Use an approved organization that
collects and/or recycles waste electrical and electronic equipment. For more information,
contact one of these:
- Our customer service department: Druck.com
- Your local government office.

Copyright 2011 Baker Hughes Company.
ii | DPS 8000 Instruction Manual–English
Note: Abbreviations are the same in the singular and plural.
Abbreviation Description
a Absolute (Pressure version)
ASCII American Standard Code for Information Interchange
°C Celsius (Degrees)
CAN Controller Area Network
CANopen A set of standards that defines the operation of devices across a CAN system.
CiA CAN in Automation international users and manufacturers group (CiA e.V.)
COB Communication Object (CAN Message): Data is sent across a CAN Network inside
a COB.
COB-ID COB-Identifier. Identifies a COB uniquely in a Network and determines the priority
of the COB.
dc Direct Current
DPS Digital Pressure Sensor
EMC Electromagnetic Compatibility
EN European Norm
°F Fahrenheit (Degrees)
FP Floating Point
FS Full-scale. Refers to a full-scale value from a transducer or instrument.
FV Field Value
g Acceleration of Gravity
g Gauge (Pressure version)
g Gram
Hz Hertz
ID Identifier
kbits/s Kilobits per second
LSS Layer Setting Services
max Maximum
mbar Millibar
min Minimum
mm Millimetre
ms Millisecond
MΩ Megohm
NMT Network Management: One of the service elements of the CAN Application Layer
NPT National Pipe Taper (a thread standard)
PDO Process Data Object

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English–DPS 8000 Instruction Manual | iii
PIN Personal Identification Number
psi Pound-force per square inch
PV Process Value
SDO Service Data Object
SDS Sales Data Sheet
SI Système International
S/N Serial Number
V Volt
Abbreviation Description

Copyright 2011 Baker Hughes Company.
iv | DPS 8000 Instruction Manual–English

Copyright 2011 Baker Hughes Company.
English–DPS 8000 Instruction Manual | v
Contents
1. Introduction 1
1.1 Manufacturer 1
2. Description 1
2.1 Purpose 1
2.1.1 Applications 1
2.1.2 Summary of Facilities 1
2.1.3 Summary of the CANopen Set of Functions 2
2.2 Technical Specifications 2
2.3 Design and Principle of Operation 2
2.4 Markings 3
3. Installation & Operation 3
3.1 General Requirements 3
3.2 Safety Measures 4
3.3 Connecting to a Pressure Source 5
3.3.1 Media Compatibility 5
3.3.2 Pressure Containment 6
3.4 Connection to CAN bus System 6
3.5 Power Requirements 7
3.6 Maintenance 7
3.6.1 Visual Inspection 7
3.6.2 Error Register Status 7
3.6.3 Cleaning 7
3.6.4 Adjustment 7
3.7 Returned Goods Procedure 9
3.7.1 Safety Precautions 9
3.7.2 Important Notice 9
3.8 Electromagnetic Compatibility 9
3.8.1 Power Supply and Metering 9
3.8.2 Cable Type 10
3.8.3 Earthing 10
4. Operation 10
4.1 Start Operating 10
4.2 Procedures 10
4.3 Quick Start 11
4.4 Primary Objects 11
4.5 To Change the Operation - Node ID and Baud Rate 11
4.6 To Change the Operation - Objects: 0x1000 -0x1FFFF 11
4.6.1 0x100C to 0x100E - Error Control: Node Guarding Option 11
4.6.2 0x1017 – Error Control: Heartbeat Option 11
4.6.3 0x1010 01 – To Save Changes to the Data Dictionary 11
4.6.4 0x1011 01 – To Re-apply the Factory Values 12
4.6.5 0x1800 02 – The PDO Transmission (Type or Period) 12
4.6.6 0x1A00 – The Data in the ‘Transmit PDO’ 12
4.7 To Change the Operation – Objects: 0x2000 –0x2FFFF 12
4.7.1 0x210C– Node ID 12
4.7.2 0x210D – Bit Rate 12

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vi | DPS 8000 Instruction Manual–English
4.7.3 0x2200 – To Change the Calibration Data 13
4.7.4 0x2201 to 0x2203 – The Last Calibration Year, Month, Day 13
4.7.5 0x2204 to 0x2206 – The Next Calibration Year, Month, Day 13
4.7.6 0x2207 – The Pressure Calibration Gain 13
4.7.7 0x2208 – The Pressure Calibration Offset 13
4.7.8 0x2209 – The Temperature Calibration Gain 14
4.7.9 0x220A – The Temperature Calibration Offset 14
4.7.10 0x220D to 0x2218 – The Filter System 14
4.7.11 0x2304 – The Tag for the Type of Data 14
4.8 To Change the Operation – Objects: 0x6000 –0x6FFFF 14
4.8.1 0x6120 to 0x6124 – The Scale Data for Pressure and Temperature Output
14
4.8.2 0x6131 01 – The Units for the Pressure Output 15
4.8.3 0x6148 – The Local Limits (Minimum Pressure and Temperature) 15
4.8.4 0x6149 – The Local Limits (Maximum Pressure and Temperature) 15
4.9 To Monitor the Operation – Objects: 0x1000 –0x1FFFF 15
4.9.1 0x1001 – The Status of the Unit 15
4.10 To Monitor the Operation – Objects: 0x2000 –0x2FFFF 16
4.10.1 0x2006 – The Count: Pressure is More than the Limit 16
4.10.2 0x2007 – The Count: Pressure is Less than the Limit 16
4.10.3 0x2008 – The Count: Temperature is More than the Limit 16
4.10.4 0x2009 – The Count: Temperature is Less than the Limit 17
4.11 To Monitor the Operation – Objects: 0x6000 –0x6FFFF 17
4.11.1 0x6130 01/0x6130 02 – The Pressure and Temperature 17
4.11.2 0x6150 – The Pressure and Temperature Status 17
Appendix A. CANopen Object Dictionary 19
A.1 Communication Segment 19
A.1.1 Object 1000h: Device Type 19
A.1.2 Object 1001h: Error Register 19
A.1.3 Object 1003h: Pre-defined Error Field 20
A.1.4 Object 1005h: COB-ID SYNC 20
A.1.5 Object 1007h: Synchronous Window Length 20
A.1.6 Object 1008h: Manufacturer Device Name 21
A.1.7 Object 100Ch: Guard Time 21
A.1.8 Object 100Dh: Life Time Factor 21
A.1.9 Object 1010h: Store Parameter Field 22
A.1.10 Object 1011h: Restore Default Parameters 22
A.1.11 Object 1012h: COB-ID Time Stamp 23
A.1.12 Object 1014h: COB-ID EMCY 24
A.1.13 Object 1015h: Inhibit Time Emergency 24
A.1.14 Object 1017h: Producer Heartbeat Time 24
A.1.15 Object 1018h: Identity Object 25
A.1.16 Object 1019h: Synchronous Counter Overflow Value 26
A.1.17 Object 1800h: Transmit PDO Communication Parameter 1 26
A.1.18 Object 1A00h: Transmit PDO Mapping Parameter 1 27
A.2 Manufacturer Segment 28
A.2.1 Object 2003h: Current Time 28
A.2.2 Object 2004h: Acquisition Time 28
A.2.3 Object 2005h: Acquisition Interval 29
A.2.4 Object 2006h: Pressure Span Overflow Count 29
A.2.5 Object 2007h: Pressure Span Underflow Count 29
A.2.6 Object 2008h: Temperature Span Overflow Count 29

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English–DPS 8000 Instruction Manual | vii
A.2.7 Object 2009h: Temperature Span Underflow Count 30
A.2.8 Object 210Ch: Node ID 30
A.2.9 Object 210Dh: Bit Rate 30
A.2.10 Object 2200h: Calibration Access Pin 31
A.2.11 Object 2201h: Last Calibration Year 31
A.2.12 Object 2202h: Last Calibration Month 31
A.2.13 Object 2203h: Last Calibration Day 31
A.2.14 Object 2204h: Next Calibration Year 32
A.2.15 Object 2205h: Next Calibration Month 32
A.2.16 Object 2206h: Next Calibration Day 32
A.2.17 Object 2207h: Pressure Gain 33
A.2.18 Object 2208h: Pressure Offset 33
A.2.19 Object 2209h: Temperature Gain 33
A.2.20 Object 220Ah: Temperature Offset 33
A.2.21 Object 220Dh: FIR Samples Size 34
A.2.22 Object 220Eh: FIR Sample Data 34
A.2.23 Object 220Fh: FIR2 Samples Size 34
A.2.24 Object 2210h: FIR2 Sample Data 35
A.2.25 Object 2211h: FIR3 Samples Size 35
A.2.26 Object 2212h: FIR3 Sample Data 35
A.2.27 Object 2213h: FIR4 Samples Size 35
A.2.28 Object 2214h: FIR4 Sample Data 36
A.2.29 Object 2215h: FIR5 Samples Size 36
A.2.30 Object 2216h: FIR5 Sample Data 36
A.2.31 Object 2217h: Selected FIR Filter 37
A.2.32 Object 2218h: FIR Pre-scaler 37
A.2.33 Object 2300h: PDCR Min Pressure 38
A.2.34 Object 2301h: PDCR Max Pressure 38
A.2.35 Object 2302h: PDCR Type 39
A.2.36 Object 2303h: PDCR Acquisition Period 39
A.2.37 Object 2304h: PDCR Text 39
A.3 Device Profile Segment 39
A.3.1 Object 6100h: AI Input FV 39
A.3.2 Object 6101h: AI Input Unit 40
A.3.3 Object 6110h: AI Sensor Type 41
A.3.4 Object 6120h: AI Input Scaling 1 FV 42
A.3.5 Object 6121h: AI Input Scaling 1 PV 42
A.3.6 Object 6122h: AI Input Scaling 2 FV 43
A.3.7 Object 6123h: AI Input Scaling 2 PV 44
A.3.8 Object 6124h: AI Input Offset 44
A.3.9 Object 6130h: AI Input PV 45
A.3.10 Object 6131h: AI Physical Unit PV 46
A.3.11 Object 6148h: AI Span Start 46
A.3.12 Object 6149h: AI Span End 47
A.3.13 Object 6150h: AI Status 48
Appendix B. Alternative Pressure Units 49
Appendix C. Bibliography 51

Copyright 2011 Baker Hughes Company.
viii | DPS 8000 Instruction Manual–English

Copyright 2011 Baker Hughes Company.
English–DPS 8000 Instruction Manual | 1
1. Introduction
This manual is applicable to 8000 family pressure sensors consisting of the following product
series:
• [TERPS] 8000, 8100, 8200 and 8300
The original language of this manual is English.
1.1 Manufacturer
The identified manufacturer of this equipment is:
“Druck Limited”
Fir Tree Lane, Groby, Leicester, LE6 0FH, United Kingdom.
Telephone: [phone]; Fax: [phone]
Internet: Druck.com
2. Description
2.1 Purpose
The DPS 8000 family pressure sensors use TERPS (trench etched resonant pressure sensor)
technology and are designed for continuous measurement and conversion of pressure into an
electronic output.
The DPS 8000 measures absolute pressure to produce fast, accurate pressure data through a
Controller Area Network (CAN) bus interface. All these transducers include:
• CANopen software standards.
• Digital output.
• CAN bus serial communications interface.
Note: The prerequisites for this instruction manual are prior knowledge of the CANopen protocols
and standards. See Appendix C, “Bibliography,” on page 51 for more details.
2.1.1 Applications
The DPS 8000 series is for automated systems using a CAN bus network and CANopen software
standards. The pressure transducers in the DPS 8000 series are ideal for automated systems
with:
• A large amount of digital pressure data.
• A high level of accuracy over a wide temperature range.
• A sophisticated level of software control.
2.1.2 Summary of Facilities
Because all the transducers in the DPS 8000 series use CANopen software standards, each
transducer includes a CANopen Object Dictionary. Use the CANopen Object Dictionary to do
these primary tasks:
• Monitor the current pressure and temperature data.
• Tag the type of data. For example: Oil-mbar, H2O-mbar.
• Read the factory defined operating data. For example, the pressure range, and the type of
sensor.
• Set the update frequency for the pressure and temperature data.
• Set the pressure units.
• Monitor the current status.

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2 | DPS 8000 Instruction Manual–English
• Read and set the last and next calibration date.
• Set new calibration values.
• Set local pressure and temperature limits for use with the internal out-of-limit counters.
• Monitor the number of times the pressure is not in the specified limits.
• Monitor the number of times the temperature is not in the specified limits.
• Restore all the factory default values for the CANopen Object Dictionary.
Use a standard CANopen software package to access the contents of the CANopen Object
Dictionary.
2.1.3 Summary of the CANopen Set of Functions
2.2 Technical Specifications
The sensor has a model number of the form 'DPS 8##C-T#-A#-C#-##-##'.
Refer to the appropriate 8000, 8100, 8200 or 8300 data sheet for technical specifications and
explanation of the sensor's model number.
Model numbers appended with a four or eight-digit alphanumeric string denote the use of a
customer-specific specification drawing indicating the use of additions or deviations to the data
sheet specification. Refer to the specification drawing if applicable.
2.3 Design and Principle of Operation
The sensor consists of a pressure connector, pressure measuring module, a partially
encapsulated electronics module, and electrical connection facilities, structurally combined in a
cylindrical metal housing.
The pressure connector allows the sensor to be mounted to a pressurized vessel or pipework.
The pressure measuring module consists of a welded metal construction, featuring a metal
diaphragm* (providing a flexible barrier to harsh process media), a glass-to-metal seal (for
Table 1: CANopen Functions
Function Comment
NMT Slave
Error Control Node Guarding or Heartbeat.
Node ID LSS (DSP-305 V1.0)
Number of PDO 1 transmit PDO, no receive PDOs.
PDO Modes Event triggered or Remotely requested.
PDO Linking Yes
PDO Mapping Default
Emergency Message Yes
CANopen Version DS-301 V4.01
Framework No
Certified No
Device Profile DSP-404 V1.0
Maximum Baud Rate 1 Mbit/s
* 80XX, 82XX and 83XX models only. 81XX models provide no harsh process media isolation.

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English–DPS 8000 Instruction Manual | 3
electrical connections) and a fluid filled* cavity containing a silicon-based micro-machined
resonant structure.
The DPS variants provide a digitally encoded signal derived from the measured frequency of the
resonant structure as it responds to applied pressure. A variety of digital encoding and physical
interface options are available.
2.4 Markings
The markings applied to the pressure sensors are in English, see Figure 1:
Figure 1: Identification, Electrical and Pressure Markings
Other data is possible, which the manufacturer can reflect in the marking, if required by technical
documentation.
3. Installation & Operation
3.1 General Requirements
When the sensor is received, check for completeness.
To identify the electrical and pressure connections, refer to the product data sheet or, if
applicable, the specification drawing.
Do not use force when installing the sensor. Do not tighten the sensor by rotating the housing.
For this purpose, a hexagon socket for the wrench is provided on the housing.
The ambient temperature and the process media to be measured must not exceed the ranges
specified in the sensor specification.
In the negative temperature range it is necessary to exclude the accumulation and freezing of
condensate in the working chambers and inside the connecting pipelines for gaseous media and
freezing, crystallization of the medium or crystallization from it, of the individual components for
liquid media.
1 Product name: 'TERPS 8##C'.
2 Product description: 'PRESSURE SENSOR'.
3 Model number - To identify the meaning, refer to the product data sheet. If the model number is followed
by four or eight numbers, '-####' or '-########', refer to the manufacturer's specification drawing
E-A3-#### or ########.
4 Serial number.
5 Pressure range limits and unit of measurement.
6 Power supply voltage range.
7 Output: 'CAN'.
8 Ambient temperature range.
9 Manufacturer's name and address.
CAUTION Until installation, keep the unit in the original container with all the
covers in position. The container and covers prevent contamination and
damage. When not in use, keep the connections clean at all times, and put the
covers on the open connections.
TERPS 8##C
PRESSURE SENSOR
S/N #######
### TO ### ### #
Supply: ### TO ### Vdc
Output: CAN
Temp. Range: ### TO #### °C
DRUCK LTD. GROBY, LE6 0FH, UK
[1]
[2]
[3]
[4]
[5]
[6]
[9]
DPS 8##C-T#-A#-C#-H#-##
[7]
[8]

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4 | DPS 8000 Instruction Manual–English
The materials used for the primary enclosure and pressure bearing surfaces are identified in the
product data sheet or, if applicable, the specification drawing. Make sure that the materials are
applicable for the installation.
Before using the equipment, remove the plastic/rubber protection cap from the pressure
connector.
The 80XX, 82XX and 83XX are harsh media isolated product. Isolation is achieved by
hermetically sealing the sensor element, see Figure 2, in an oil filled chamber. The weight of this
oil gives a g sensitivity as a pressure offset error.
The 81XX is not a harsh media isolated product. The pressure media comes directly into contact
with the sensor element. Care must be taken to ensure the pressure media does not damage the
sensor element. There is negligible change in offset due to mounting position and vibration.
Figure 2: TERPS Sensor Element
To calibrate the 8XXX Series, the unit is mounted vertically with the pressure port at the lowest
point. Orientation other than this produces a pressure offset error as specified in the data sheet.
The error is most noticeable at lower pressure ranges.
Note: The g-sensitivity will also create an error in a high vibration environment and the unit should
be mounted accordingly.
3.2 Safety Measures
The operation of sensors in systems whose pressure may exceed the overload values specified
in the data sheet or customer-specific specification drawing is not allowed.
Connection and detachment of sensors from the mains supplying the pressure of the medium to
be measured must be done after the shutoff valve is closed from the process and the pressure in
the working chamber is made equal to atmospheric.
The connecting pipes must have a one-way slope (not less than 1:10) from the pressure collection
point up to the sensor, if the medium to be measured is gas, and down to the sensor if the medium
is liquid. If this is not possible, when measuring gas pressure at the lower points of the connecting
lines, it is necessary to install sludge vessels, and when measuring the liquid pressure at the
highest points, install gas collectors.
Selected devices for mounting sensors should be mounted on straight sections, at the maximum
possible distance from pumps, locking devices, elbows, expansion joints and other hydraulic
devices. It is especially not recommended to install sensors in front of the shut-off device if the

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English–DPS 8000 Instruction Manual | 5
medium to be measured is liquid. If there are water hammer effects in the system, it is
recommended to use a sensor complete with a hydraulic shock dampener.
To reduce the temperature acting on the isolation diaphragm when measuring vapor pressure, it
is recommended to use impulse tubes. The impulse tube must first be filled with water.
Attach the equipment in a safe configuration that prevents unwanted stress (vibration, physical
impact, shock, mechanical and thermal stresses). Do not install the equipment where it can be
damaged by a material that causes corrosion. Provide additional protection for the equipment if
it may be damaged in service.
When installing power supply and signal wiring, the possibility of condensate entering the sensor
cable entry should be avoided.
3.3 Connecting to a Pressure Source
When mounting the sensor, seal the mating surfaces. Failure to properly seal may affect
performance or calibration accuracy.
Male threaded pressure connectors must not be sealed or constrained against the face at the
base of the thread. The forward cone or flat face should always be used as indicated below.
Depth versions should not be used at hyperbaric pressures above 70 bar (1000 psi),
approximately 700 m (2300 ft) of water.
3.3.1 Media Compatibility
The media compatibility of the sensors is shown in Table 2.
Note: Fluid classification complies with European Regulation (EC) No 1272/2008. Statements
comply with European Pressure Equipment Directive 2014/68/EU.
Table 2: Media Compatibility
Product Pressure Range Media Compatibility
81XX 0 to 3.5 bar
0 to 50 psi
Non-condensing dry gases compatible with silicon
dioxide, fluorosilicone RV adhesive, stainless steel
316L and glass.
80XX 0 to 70 bar
0 to 1000 psi
Fluids compatible with stainless steel 316L and
Hastelloy C276.
82XX
83XX
0 to 70 bar
0 to 1000 psi
Fluids compatible with Hastelloy C276.
98

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6 | DPS 8000 Instruction Manual–English
3.3.2 Pressure Containment
The pressure containment of the sensors is shown in Table 3.
3.4 Connection to CAN bus System
Figure 3 shows an example CAN bus system.
Figure 3: Example CAN bus System
A typical CAN bus system must have these items:
• A CAN bus with an applicable input/output device for the signal lines (applicable to the
electrical connection on the pressure transducer).
• Power supply. Refer to Section 3.5 on page 7.
• All applicable tools to connect the pressure and electrical connections, as detailed in the
applicable system installation manual.
Table 3: Pressure Containment
Product Pressure Range Pressure Containment
81XX 0 to 3.5 bar
0 to 50 psi
7bar maximum
100 psi maximum
80XX
82XX
83XX
0 to 7 bar
0 to 100 psi
70 bar maximum
1000 psi maximum
>7 to 70 bar
>100 to 1000 psi
200 bar maximum
2900 psi maximum
CANopen
software
package
Identifies the signal line connections on the CAN bus.
Cable screen to CAN_GND or an applicable earth.
Represents the different pressure conditions in the example system.
+ Power supply
CAN_GND and -ve supply
CAN_H
CAN_L
CAN_X

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English–DPS 8000 Instruction Manual | 7
3.5 Power Requirements
The sensor should be connected to a stable power supply. The power supply requirements are
shown in Table 4.
3.6 Maintenance
3.6.1 Visual Inspection
Inspect the product for damage and corrosion. Any damage to the product must be assessed. If
the housing is no longer sealed against water and/or dust, the product must be replaced.
3.6.2 Error Register Status
To monitor the current status of the unit, use this source of error data:
• The Error Register (object 0x1001). Refer to Appendix A, “CANopen Object Dictionary,” on
page 19.
If there is an error:
• Do the Network Initialization Process (the boot-up process) again.
• Examine the electrical connections. Do all the applicable tests and checks. Refer to the
System Installation Manual.
• If necessary, install a new pressure transducer.
3.6.3 Cleaning
Clean the case with a damp lint-free cloth and mild detergent.
If the product has been in contact with hazardous or toxic materials, obey all the applicable
Control of Substances Hazardous to Health (COSHH) or Material Safety Data Sheet (MSDS)
references and precautions when handling.
3.6.4 Adjustment
Druck supplies a calibration certificate with the pressure transducer. When it is necessary to
recalibrate the pressure transducer, use the procedure that appears below (Druck recommends
a minimum interval of once a year).
Note: Druck can provide a calibration service that is traceable to international standards.
3.6.4.1 Calibration – Equipment
Druck recommends the use of these items of equipment to calibrate the unit:
• Pressure source - minimum accuracy: 0.01% of reading
• Digital thermometer - minimum accuracy: 1 °C
Table 4: Power Supply Requirements
Product Supply Voltage (V dc) Supply Current
DPS Versions 7.5 to 30 25 mA nominal
35 mA peak
WARNING High pressures and temperatures are dangerous and can cause
injury (Refer to pressure limits in the sales data sheet). Be careful when working
on components connected to lines that have high pressures and heat. Use the
applicable protection and obey all safety precautions.
WARNING Output Calibration, Full-Scale and Offset adjustment may be
subject to state requirements for verification of metrological equipment.

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8 | DPS 8000 Instruction Manual–English
• A CANopen software package to get access to the contents of the CANopen Object
Dictionary. Refer to Appendix A, “CANopen Object Dictionary,” on page 19.
3.6.4.2 Two-Point Pressure Calibration – Procedure
To get accurate results, calibrate in conditions where the pressure and temperature are stable.
1. Record the current values for the calibration data:
• Object 0x2207 00 (Pressure Gain) = GAIN
Default value = 1
• Object 0x2208 00 (Pressure Offset) = OFFSET
Default value = 0 mbar
2. First calibration point:
a. Apply Pressure (AP1) at 10% of the full-scale pressure (in mbar) and allow the pressure
to become stable.
b. Record the Field Value (FV1) that appears in object 0x6100 01 (Pressure Value).
Record the value in mbar.
3. Second calibration point:
a. Apply Pressure (AP2) at 90% of the full-scale pressure (in mbar) and allow the pressure
to become stable.
b. Record the Field Value (FV2) that appears in object 0x6100 01 (Pressure Value).
Record the value in mbar.
4. Calculate the new values for the calibration data:
• NEW GAIN = [GAIN] * [(AP1 - AP2) / (FV1 - FV2)]
• NEW OFFSET = [(OFFSET) - FV1] + [(AP1) * [(AP1 - AP2) / (FV1 - FV2)]]
The value for the NEW OFFSET is in mbar.
5. Write the new values for the calibration data back to the CANopen Object Dictionary:
a. Set object 0x2200 00 (calibration access pin) to 4118.
b. Set object 0x2207 00 (pressure gain) to the NEW GAIN value.
c. Set object 0x2208 00 (pressure offset) to the NEW OFFSET value. The value for the
NEW OFFSET is in mbar.
d. Set object 0x2200 00 (calibration access pin) to 0.
6. Confirm that the new values for the calibration data are correct:
a. Repeat steps 2 and 3.
7. Write the new values for the last and next calibration dates back to the CANopen Object
Dictionary:
a. Set object 0x2200 00 (Calibration Access Pin) to 4118.
b. Set objects 0x2201 00 to 0x2203 00 to the new values for the last calibration year,
month, day.
c. Set objects 0x2204 00 to 0x2206 00 to the new values for the next calibration year,
month, day.
d. Set object 0x2200 00 (Calibration Access Pin) to 0.
8. If applicable, reset the values for the out-of-limit counters (objects 0x2006 to 0x2009).
3.6.4.3 Two-Point Pressure Calibration – Results
For correct operation, the value for the NEW GAIN is in the range 0.9 to 1.1. If the value is not in
this range, this shows either a defective unit or defective calibration equipment.

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English–DPS 8000 Instruction Manual | 9
3.7 Returned Goods Procedure
To repair or calibrate the sensor, return it to the applicable Druck Service Department.
Please contact our Service Department, and get a Return Authorization number.
Please supply these details:
• Product (e.g. TERPS 820C Pressure Sensor)
• Pressure range
• Serial number
• Details of defect / work to be undertaken
• Calibration traceability requirements
• Operating conditions
3.7.1 Safety Precautions
To prevent possible injury when we receive the product, you must also tell us if the product has
been in contact with hazardous or toxic materials. Please supply the applicable Control of
Substances Hazardous to Health (COSHH) or Material Safety Data Sheet (MSDS) references
and precautions.
3.7.2 Important Notice
Service or calibration by unauthorized sources will affect the warranty and may not guarantee
further performance.
3.8 Electromagnetic Compatibility
The pressure sensor complies with the European Electromagnetic Compatibility Directive
2014/30/EU.
When appropriately installed the sensors meet and exceed the Commercial and Industrial
specifications indicated in Table 5:
3.8.1 Power Supply and Metering
The quality of the power supply and monitoring equipment will directly affect the EMC
performance of the entire system. Since “Druck Limited” has no control over the installation of the
sensor it must remain the responsibility of the user to ensure that the EMC performance of the
system is adequate.
To maintain good immunity from electromagnetic disturbances present on the system power
supply, the power supply should filter any transient interference from the incoming line and
present a clean regulated DC supply to the sensor. The monitoring equipment should likewise be
immune from the effects of electromagnetic disturbances and not impart disruptive signals on the
connections to the sensor.
The sensor is not intended for connection to a DC distribution network.
Table 5: EMC Standards
TERPS 8*00 Series
Models DPS 8***-T*-A*-C*-**-**[-…]
EN 61000-6-1:2007
EN 61000-6-2:2005
EN 61000-6-3:2007 + A1:2011
EN 61000-6-4:2007 + A1:2011
EN 61326-1:2013
EN 61326-2-3:2013

Copyright 2011 Baker Hughes Company.
10 | DPS 8000 Instruction Manual–English
3.8.2 Cable Type
Due to the small size of the sensor it is unlikely to be directly affected by radiated RF energy. Any
RF energy that gets into the circuit will probably enter via the interconnecting cable.
To minimize the effect of nearby circuits and events, it is necessary to use screened cable
between the sensor and power supply / monitoring equipment. Failure to do so will invalidate the
EMC tests conducted by “Druck”.
The choice of cable type should reflect the environment through which it is going to run. Screened
cable should always be used where electrical noise is present. Good cabling practice will be
reflected in signal quality.
3.8.3 Earthing
For the screening of the cable to be effective, it is essential that the screen or drain conductor is
permanently bonded to earth (ground). This should take place at the monitoring end of the cable
as close to the power supply as practical. Protection should be afforded to any unscreened
section of cable or circuit by means of a screened enclosure.
4. Operation
This section includes:
• The procedures to start and change the operation of the pressure transducer.
• The available data from the pressure transducer.
4.1 Start Operating
After a successful installation (refer to Chapter 4, “Operation,” on page 10) and to start operating
requires:
• A CANopen software package to access the CANopen Object Dictionary.
• Operation of the CANopen network, including the Network Initialization Process (the Boot-
up process) and/or the applicable configuration procedures.
4.2 Procedures
1. Complete the boot-up procedure (defined in the CANopen standard) for the CAN bus
network. After boot-up the pressure transducer enters a “pre-operational” mode and in this
mode responds to SDO and LSS messages.
2. The pressure transducer must be set to its operational state to respond to sync messages
and to be fully operational.
Figure 4: Default ‘Transmit PDO’ Operation
Note: This shows how the pressure transducer uses the default values to transmit a Process Data
Object (PDO).
CAN bus SYNC
(Cycle period in ms)
PDO COB-ID = 0x181
Object 0x6130 01:
Pressure Value
Object 0x2004 00:
Acquisition Time