GE Baker Hughes 8000 Series Bedienungsanleitung

bhge.com

BHGE Data Classification: Public

8000/8100/8200

Series

Trench Etched Resonant Pressure Sensor

Instruction Manual

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.

bhge.com

For technical advice contact the manufacturer.

WARNING Do not apply pressure greater 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.

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.

This symbol indicates do not throw-away in domestic bin, hazardous

material, dispose correctly in accordance with local regulations.

Abbreviation Description

a Absolute

ASCII American Standard Code for Information Interchange

°C Degrees Celsius

atm Atmosphere

bps Bits per second

cmHg Centimetre of mercury

CR Carriage return

DC Direct current

EEPROM Electrically Erasable Programmable Read Only Memory

FS Full-scale

ftH2O Feet of water

hPa Hecto Pascal

inH2O Inches of water

inHg Inch of mercury

kg Kilogram

kg/cm2Kilogram per centimetre squared

kg/m2Kilogram per metre squared

kPa Kilo Pascal

lb/ft2Pounds per foot squared

LF Line feed

mA Milli Ampere

mbar Millibar

mbar a Millibar absolute

mH2O Metres of water

mHg Metre of mercury

mm Millimetre

mmH2O Millimetres of water

mmHg Millimetre of mercury

MPa Megapascal

MΩMega ohm

n/a Not applicable

Pa Pascal

PIN Personal identification number

ppm Parts per million

psi Pound per square inch

RS-232 ANSI TIA-232 communication standard

RS-485 ANSI TIA-485 communication standard

TERPS Trench etched resonant pressure sensor

USB Universal serial bus

V Volt

Abbreviation Description

Contents

1. Installation 1

1.1 Introduction 1

1.2 Connecting TERPS to a Pressure Source 1

1.3 Media Compatibility 2

1.4 Pressure Containment 2

1.5 Power Requirements 3

1.6 Software 3

1.6.1 USB Driver 3

1.6.2 LabVIEW Driver 3

1.6.3 Mobile Application 3

2. RPS Pressure Measurement 5

2.1 Measuring the Frequency 5

2.2 Measuring the Diode Voltage 5

2.3 Calculating Pressure 5

2.4 Stored Coefficients 6

3. DPS Pressure Measurement 9

3.1 Serial Data Communications Settings 9

3.2 Applications 9

3.3 RS-485 Connections 9

3.4 RS-232 Connections 10

3.5 USB Connection 10

3.6 Measuring Pressure 11

3.7 Factory Defaults 11

4. Programming Guide 13

4.1 Command Summary 13

4.2 Communication Modes 14

4.2.1 Direct Mode 14

4.2.2 Addressed Mode 14

4.3 Command Syntax 15

4.3.1 Direct Mode Syntax 15

4.3.2 Addressed Mode Syntax 15

4.4 Measurement Commands 15

4.4.1 R - Get Reading 15

4.4.2 G - Get New Reading and Transmit 16

4.4.3 Z - Read Raw Data 16

4.5 Information Commands 17

4.5.1 I - Transducer Identity 17

4.6 General Set-up Commands 18

4.6.1 A - Auto-send Reading 18

4.6.2 N - Set Device (Transducer) Address 19

4.6.3 Q - Set Measurement Speed 19

4.6.4 U - Set Units 20

4.7 PIN Protected Set-up Commands 21

4.7.1 C - User Calibration 21

4.7.2 H - Change Slope 23

4.7.3 M - User Message 24

4.7.4 O - Communication Settings 24

4.7.5 P - Change PIN 26

4.7.6 S - Set Offset 27

4.8 Factory Commands - Query Only 28

4.8.1 E - Crystal Reference Frequency 28

4.8.2 L - Load Calibration Coefficients 28

4.8.3 T - Analogue/Digital Converter Set-up 29

4.8.4 V - Transducer Type and Settings 29

4.8.5 W - EEPROM Query 30

4.9 Error Messages 30

4.9.1 Incorrect User Command 30

4.9.2 Transducer Fault 31

Appendix A. Fault Finding 33

Appendix B. RPS EEPROM Format 35

Introduction

1. Installation

1.1 Introduction

The 8XXX Series uses TERPS (trench etched resonant sensor) technology. The RPS 8XXX

produces a frequency and diode voltage output. The DPS 8XXX includes a microprocessor to

produce a serial digital output.

Figure 1-1: TERPS Sensor Chip

The 80XX, 82XX and 83XX are harsh media isolated product. Isolation is achieved by

hermetically sealing the sensor chip 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 chip. Care must be taken to ensure the pressure media does not

damage the sensor chip. There is negligible change in offset due to mounting position and

vibration.

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.

1.2 Connecting TERPS to a Pressure Source

When mounting the sensor, seal the mating surfaces. Failure to properly seal may affect

performance or calibration accuracy.

Chapter 1. Installation

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 (approximately 700

m of water).

1.3 Media Compatibility

The media compatibility of the TERPS sensors is shown in Table 1-1.

Note: Fluid classification complies with Regulation (EC) No 1272/2008. Statements

comply with Pressure Equipment Directive 2014/68/EU.

1.4 Pressure Containment

The pressure containment of the TERPS sensors is shown in Table 1-2.

Table 1-1: Media Compatibility

Product Pressure Range Media Compatibility

81XX 0 to 3.5 bar Non-condensing dry gases compatible with silicon,

silicon dioxide, RTV adhesive, stainless steel 316L

and glass.

80XX 0 to 70 bar Fluids compatible with Stainless Steel 316L and

Hastelloy C276.

82XX

83XX

0 to 70 bar Fluids compatible with Hastelloy C276.

Table 1-2: Pressure Containment

Product Pressure Range Pressure Containment

DPS 81XX 0 to 3.5 bar 7 bar maximum

DPS 80XX 0 to 7 bar 70 bar maximum

>7 to 70 bar 200 bar maximum

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