RPS8100
Pressure measurement
for research & industry
Druck Limited
Fir Tree Lane
Leicester LE6 0FH
England
Tel: 0116 231 7100
Trench Etched
Resonant Pressure Sensor
TERPS 8000 Series
User Manual
Groby
K0473
Druck Limited 2013
This document is the property of Druck Limited and may not, either in part or whole, be copied or otherwise
reproduced, communicated in any way to third parties, nor stored in any data processing system, without the express
written authority of Druck Limited.
Page 1 of 42 K0473 Issue 5
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mendment Record
A
Iss No Date C/N No Originator Typed
1 20/12/10 N/A Robert Lee Robert Lee 156219 New document
2 24/06/11 26758 Robert Lee Robert Lee 165022
3 26/10/11
4 30/01/12 27572 Robert Lee Robert Lee 176971
5 08/11/12
Approvals
Engineering
Technical and operational accuracy
M COLE
Marketing
Customer/market suitability
I ABBOTT
27245
27300
28898
29134
Glenn Roles Glenn Roles 171244
Robert Lee Robert Lee 192333
Technical Communications
Compliance with style guidance and
presentation
G ROLES
Workflow
No.
Amendments
Delete two 80xx pressure ranges,
change power supply voltage from 5 to
6 Vdc.
Change Pascal to hector-Pascal, -
0.2mV/°C to -2mV/°C. Equations
changed on page 5. Pressure range
changed on page 4 25 to 40khz.
Page 11, 7.9b, add 5% of span after
`An applied pressure’.
Add Hastelloy versions and up-date
RS232/RS485.
Add section 6.5 Stored Coefficients and
appendix A
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Print Instructions
Finished Size: A5
•
• Print in colour on white throughout (covers + text), saddle stitched.
• Cover to 285 gsm, content to 100 gsm.
Translate into French, German, Italian, Spanish, Portuguese Brazilian, Simplified Chinese and Russian.
THIS HARDCOPY IS NOT TO BE USED AS CAMERA COPY.
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Page 4 of 42 K0473 Issue 5
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GE
Measurement & Control
Trench Etched Resonant Pressure Sensor
8000 Series
User Manual - K0473
© 2013 General Electric Company. All rights reserved.
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.
Pressure WARNING:
Do not apply pressure greater the maximum safe working
pressure to the sensor.
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 authorised service
agents or the manufacturer’s service departments.
Technical Advice 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.
EC Directives This equipment complies with:
BS EN 61000-6-1:2007
BS EN 61000-6-2:2005
BS EN 61000-6-3:2007
BS EN 61000-6-4:2007
BS EN 61326-1:2006
This equipment complies with the requirement of the Pressure
Equipment Directive 97/23/EEC.
For further details see the Sales Data Sheet.
A full conformity certificate is available from the manufacturer.
Contact GE Measurement & Control:
www.ge-mcs.com
i K0473 Issue 5 - [EN] English
Abbreviations
The following abbreviations are used in this manual.
Note: Abbreviations are the same in the singular and plural.
aAbsolute
ASCII American Standard Code for Information Interchange
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
ftH
OFeet of water
2
hPa Hecto Pascal
inHg Inch of mercury
inH2OInches of water
kg Kilogram
2
kg/cm
kg/m
Kilogram per centimetre squared
2
Kilogram per metre squared
kPa Kilo Pascal
lb/ft2 Pounds per foot squared
LF Line feed
mA Milli Ampere
mbar Millibar
mbar a Millibar absolute
mHg Metre of mercury
mH
OMetres of water
2
mm Millimetre
mmHg Millimetre of mercury
mmH2O Millimetres of water
MW Mega ohm
MPa Megapascal
n/a Not applicable
[EN] English - K0473 Issue 5 ii
Abbreviations (continued)
Pa Pascal
pc Personal computer
PIN Personal identification number
ppm Parts per million
psi Pound per square inch
RS232 Serial data communication standard
RS485 Serial data communication standard
TERPS Trench etched resonant pressure sensor
VVolt
VA Volt amp
°C Degrees centigrade
iii K0473 Issue 5 - [EN] English
[EN] English - K0473 Issue 5 iv
1Introduction
1.1 General The 8000 Series uses TERPS (trench etched resonant sensor)
technology. The RPS 8000 produces a frequency and diode voltage
output. The DPS 8000 includes a microprocessor to produce a serial
digital output.
Figure 1 TERPS General view
1.2 Configuration The following variables are specified at the time of ordering.
a. Pressure range
b. Pressure connector
c. Cable length
d. Option A - Increased accuracy
e. Accessories
i. User Manual (this publication)
ii. Calibration certificate.
1 K0473 Issue 5 - [EN] English
2 Installation TERPS 8XXX is a 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.
To calibrate the TERPS 8XXX, 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 datasheet. The
error is most noticeable at lower pressure ranges.
: The g-sensitivity will also create an error in a high vibration
Note
environment and the unit should be mounted accordingly.
TERPS 81XX is not a harsh media isolated product. There is
negligible change in offset due to mounting position and vibration.
Because the pressure media comes directly into contact with the
sensor chip, care must be taken to ensure the pressure media does
not damage the sensing chip.
2.1 Connecting
TERPS to
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 (approximately 700 m of water).
[EN] English - K0473 Issue 5 2
3 TERPS media
compatibility
3.1 TERPS 81XX 0 to 3.5 bar: non-condensing dry gases compatible with silicon,
silicon dioxide, RTV adhesive, stainless steel 316L and glass.
3.2 TERPS 80XX- Ranges 0 to 200 bar: Fluids compatible with Stainless Steel 316L
and Hastelloy C276.
Ranges 201 to 350 bar: Liquids and group II gases compatible with
Stainless Steel 316L and Hastelloy C276.
Fluid classification complies with EC directive 67/548/EEC.
Statements comply with Pressure Equipment Directive 97/23/EC.
3.3 TERPS 82XX- Ranges 0 to 200 bar: Fluids compatible with Hastelloy C276.
Ranges 201 to 350 bar: Liquids and group II gases compatible with
Hastelloy C276.
Fluid classification complies with EC directive 67/548/EEC.
Statements comply with Pressure Equipment Directive 97/23/EC.
3.4 TERPS 83XX- Ranges 0 to 200 bar: Fluids compatible with Hastelloy C276.
Ranges 201 to 350 bar: Liquids and group II gases compatible with
Hastelloy C276.
Fluid classification complies with EC directive 67/548/EEC.
Statements comply with Pressure Equipment Directive 97/23/EC.
4 Pressure
containment
4.1 TERPS 81XX Ranges 0 to 3.5bar 7 bar maximum.
4.2 TERPS 8XXX- Ranges up to 7 bar: 70 bar maximum.
Ranges >7 to 100 bar: 200 bar maximum.
3 K0473 Issue 5 - [EN] English
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