Druck DPS 5000 User manual

Druck.com
BHGE Data Classification: Public
DPS 5000
SDI-12 Pressure Transducer
Instruction Manual

© 2019 Baker Hughes, a GE company – All rights reserved. DPS5000 Instruction Manual-English | 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 qualified*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.
WARNING Do not apply pressure greater than the maximum safe working
pressure to the sensor.
* A qualified technician must have the necessary technical knowledge, documentation, special test
equipment and tools to carry out the required work on this equipment.

ii | DPS5000 Instruction Manual-English © 2019 Baker Hughes, a GE company – All rights reserved.
Symbols
Abbreviations
The following abbreviations are used in this manual.
Note: Abbreviations are the same in the singular and plural.
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.
Abbreviation Description
ADC Analogue to Digital Converter
ASCII American Standard Code for Information Interchange
°C Degrees Celsius
BHGE Baker Hughes, a GE company
cm Centimetres
COSHH Control of Substances Hazardous to Health
CRC Cyclical Redundancy Checking
FS Full-scale
ft Feet
m Metres
mA Milli Ampere
mbar Millibar
ms Milli Second
mV Milli Volt
N/A Not Applicable
PC Personal Computer

© 2019 Baker Hughes, a GE company – All rights reserved. DPS5000 Instruction Manual-English | iii
psi Pound per square inch
R/W Read/Write Access
RX Receive
SDI-12 Serial Data Interface Communication Protocol
TX Transmit
USB Universal Serial Bus
V Volt
Abbreviation Description

iv | DPS5000 Instruction Manual-English © 2019 Baker Hughes, a GE company – All rights reserved.

© 2019 Baker Hughes, a GE company – All rights reserved. DPS5000 Instruction Manual-English | v
Contents
1. Introduction 1
1.1 Manufacturer 1
2. Description 1
2.1 Purpose 1
2.2 Technical Specifications 1
2.3 Design and Principle of Operation 1
3. Installation & Operation 2
3.1 General Requirements 2
3.2 Safety Measures 2
3.3 Connecting to a Pressure Source 3
3.3.1 Media Compatibility 4
3.3.2 Pressure Containment 4
3.4 Power Requirements 4
3.5 Connecting to SDI-12 Network 5
3.6 Maintenance 6
3.6.1 Visual Inspection 6
3.6.2 Cleaning 6
3.6.3 Adjustment 6
3.7 Returned Goods Procedure 6
3.7.1 Safety Precautions 7
3.7.2 Important Notice 7
3.8 Electromagnetic Compatibility 7
3.8.1 Power Supply and Metering 7
3.8.2 Cable Type 7
3.8.3 Earthing 8
4. Programming Guide 8
4.1 SDI-12 Introduction 8
4.1.1 Typical Measurement Sequence 8
4.1.2 Baud Rate and Byte Frame Format 9
4.1.3 Allowable Data Characters 9
4.2 Transducer Address 9
4.3 Command Structure 9
4.4 Command Overview 10
4.4.1 Transducer Identification 10
4.4.2 Transducer Measurement 10
4.4.3 Average Filter Setup 10
4.4.4 Setting Liquid Density 12
4.4.5 Setting Gain and Offset 12

vi | DPS5000 Instruction Manual-English © 2019 Baker Hughes, a GE company – All rights reserved.
4.4.6 Tare 13
4.5 Command Set 15
4.5.1 Basic Command Set 15
4.5.2 Extended Command Set 16
Appendix A. Register Table 17

© 2019 Baker Hughes, a GE company – All rights reserved. DPS5000 Instruction Manual-English | 1
1. Introduction
This manual is applicable to DPS 5000 pressure transducers with the SDI-12 communications
protocol.
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 5000 pressure transducers is a micro-controller based smart pressure transducer
that provides a digital output through an SDI-12 interface. The transducer is a sealed device
with the electrical connections made via an integral cable.
The DPS 5000 pressure transducers is a low powered device offering a high level of accuracy
over a wide temperature range. The SDI-12 interface provides compensated pressure and
temperature readings and allows the transducer operation to be software controlled.
The transducers are of a modular design, the parameters of which are chosen by the customer
at the time of order.
2.2 Technical Specifications
Refer to the appropriate DPS 5000 data sheet for technical specifications and explanation of
the transducer'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 transducer 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 transducer to be mounted to a pressurized vessel or
pipework.

2 | DPS5000 Instruction Manual-English © 2019 Baker Hughes, a GE company – All rights reserved.
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
electrical connections) and a fluid filled cavity containing a silicon-based micro-machined
structure.
3. Installation & Operation
3.1 General Requirements
When the transducer 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 transducer. Do not tighten the transducer 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 transducer 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.
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 DPS 5000 is a harsh media isolated product. Isolation is achieved by hermetically sealing
the transducer element in an oil filled chamber. The weight of this oil gives a g sensitivity as a
pressure offset error.
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 transducers 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 transducers 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.
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.