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Summary of Contents for Druck DPS 5000
- Page 1 DPS 5000 SDI-12 Pressure Transducer Instruction Manual Druck.com BHGE Data Classification: Public...
- Page 3 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. A qualified technician must have the necessary technical knowledge, documentation, special test equipment and tools to carry out the required work on this equipment.
- Page 4 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. Abbreviations The following abbreviations are used in this manual.
- Page 5 Abbreviation Description Pound per square inch Read/Write Access Receive SDI-12 Serial Data Interface Communication Protocol Transmit Universal Serial Bus Volt © 2019 Baker Hughes, a GE company – All rights reserved. DPS5000 Instruction Manual-English | iii...
- Page 6 iv | DPS5000 Instruction Manual-English © 2019 Baker Hughes, a GE company – All rights reserved.
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Page 7: Table Of Contents
Contents Introduction Manufacturer Description Purpose Technical Specifications Design and Principle of Operation Installation & Operation General Requirements Safety Measures Connecting to a Pressure Source 3.3.1 Media Compatibility 3.3.2 Pressure Containment Power Requirements Connecting to SDI-12 Network Maintenance 3.6.1 Visual Inspection 3.6.2 Cleaning 3.6.3... - Page 8 4.4.6 Tare Command Set 4.5.1 Basic Command Set 4.5.2 Extended Command Set Appendix A. Register Table vi | DPS5000 Instruction Manual-English © 2019 Baker Hughes, a GE company – All rights reserved.
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Page 9: Introduction
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. -
Page 10: Installation & Operation
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. -
Page 11: Connecting To A Pressure Source
The connecting pipes must have a one-way slope (not less than 1:10) from the pressure collection point up to the transducer, if the medium to be measured is gas, and down to the transducer 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. -
Page 12: Media Compatibility
3.3.1 Media Compatibility The media compatibility of the transducers is shown in Table 1. Table 1: Media Compatibility Product Material Media Compatibility Stainless Steel Fluids compatible with stainless steel 316L and Hastelloy C276. Titanium Fluids compatible with titanium grades 2 and 4. a. -
Page 13: Connecting To Sdi-12 Network
3.5 Connecting to SDI-12 Network The figures below show example connections of the DPS 5000 pressure transducer to a SDI-12 network. Figure 1 shows the pressure transducers receiving power from the data recorder. DPS 5000 Pressure Transducer +VE Supply, Ground and Data... -
Page 14: Maintenance
Table 4: DPS 5000 Cable Colour Identification Name Function Colour +VE Supply +12 V power supply. Blue Ground Ground return for power supply. White Data SDI-12 serial data. Black Case Connected to pressure transducer body tube. Screen Screen Cable screen, connected to pressure transducer body tube. -
Page 15: Safety Precautions
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 transducer it must remain the responsibility of the user to ensure that the EMC performance of the system is adequate. -
Page 16: Earthing
Take care not to create ground loops. 4. Programming Guide This section introduces the SDI-12 communication protocol and the DPS 5000 measurement procedure. 4.1 SDI-12 Introduction SDI-12 is a standard for interfacing data recorders with microprocessor-based transducers. -
Page 17: Baud Rate And Byte Frame Format
4.1.2 Baud Rate and Byte Frame Format SDI-12 data recorders and transducers communicate by an exchange of ASCII characters on the data line. See Table 5 for the SDI-12 byte frame format. Table 5: Baud Rate and Byte Frame Format Parameter Value Baud rate... -
Page 18: Command Overview
4.4 Command Overview All responses from the transducer end with a carriage return (0D hex, 13 decimal) and a line feed (0A hex, 10 decimal) character. 4.4.1 Transducer Identification To request the transducer identification, the data recorder transmits the transducer identification command “aI!”... - Page 19 Note: The average filter register table settings can only be modified when the pressure transducer is in customization mode. See the “aXMW” command in Section 4.5.2. The example below shows a typical average filter setup and the communication sequence with the pressure transducer. SampleWindow = 10 (total samples) SampleInterval = 60 (seconds) Note: The product of SampleWindow x SampleInterval must be less than 999.
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Page 20: Setting Liquid Density
a. The first letter ‘a’ in the command is replaced by the transducer address, see Section 4.2. Note: Setting SampleWindow to 1 turns off the average filter. The pressure transducer will only reply with 3 readings, see example in Section 4.4.2. 4.4.4 Setting Liquid Density The level measurement depends on knowing the density of the liquid it is in. -
Page 21: Tare
TX/RX Description Command RX> a1.12 Acknowledgment from pressure transducer. TX> aXSW10.005! Set PressureOffset to 0.005 bar. The pressure offset is always defined in bar, irrespective of the current pressure units. RX> a0.005 Acknowledgment from pressure transducer. TX> aXSF! Commits all values in the register table to the power-on defaults. - Page 22 The example below shows how to change the Tare value. TX/RX Description Command TX> aXMW1<password>! Enter into customization mode. RX> Acknowledgment from pressure transducer. TX> aXSWB0.25 Set Tare to 0.25. This will cause the pressure measurement to have 0.25 subtracted from it. RX>...
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Page 23: Command Set
4.5 Command Set 4.5.1 Basic Command Set Command Response Description Address query. 0Aa! Change transducer address from ‘0’ to ‘a’. allccccccccmmmmmmvvvxxx…xxx Send identification. “ll” is SDI-12 protocol version number. “cccccccc” is manufacturer’s name. “mmmmmm” is model name. “vvv” is transducer version. “xxx…xxx”... -
Page 24: Extended Command Set
Command Response Description aD0! a<value1><value2> <value1> is pressure mV value. <value2> is temperature mV value. aMC! Same as M command above, but with additional CRC value added. aMC1! ~ aMC5! Same as M command above, but the measurement is not cancelled if there is a request on the data line before the measurement is ready. -
Page 25: Appendix A. Register Table
Appendix A. Register Table Table A-1: Register Table Entries Index Name Type Description PressureGain float Gain value of pressure, default is 1. Range from -2.0 to +2.0. PressureOffset float Offset value of pressure, default is 0. The value is in bar pressure units. - Page 26 Appendix A.Register Table Table A-2: Pressure Unit Codes Pressure Code Units mmHg inHg kgf/cm Table A-3: Temperature Unit Code Temperature Code Units Kelvin Celsius Fahrenheit Table A-4: Level Unit Code Level Code Units Table A-5: Operation Mode Register Index Name Password Description Normal...
- Page 28 BHGE. Baker Hughes reserves the right to make changes in specifications and features shown herein, or discontinue the product described at any time without notice or obligation. Contact your BHGE representative for the most current information. Druck and Druck Logo are registered trademarks of BHGE in the United States and other countries.
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