GE
Sensing
RPT 301
Digital Output Pressure Transducer
User Manual K177
© General Electric Company. All rights reserved.
RPT 301
Digital Output Pressure Transducer
User Manual
K177
© Druck Limited 1998
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.
K177 Issue No. 3
K177 Issue No. 3
RPT 301 User Manual |
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Safety
The manufacturer has designed this instrument to be safe when operated using the procedures detailed in this manual. Do not use this instrument for any other purpose than that stated. Do not apply values greater than the maximum value stated.
This manual contains operating and safety instructions that must be followed for safe operation and to maintain the instrument 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* technicians and good engineering practice for all procedures in this manual.
Pressure
Do not apply pressure greater the maximum safe working pressure to the instrument.
Electrical Safety
This instrument is designed to be safe when using options and accessories supplied by the manufacturer.
Toxic Materials
There are no known toxic materials used in this instrument.
Maintenance
The instrument must be maintained using the manufacturer’s procedures and should be carried out by authorised service agents or the manufacturer’s service departments.
Technical Advice
For technical advice contact the manufacturer or subsidiary refer to section 5.5.
*A qualified technician must have the necessary technical knowledge, documentation, special test equipment and tools to carry out the required work on this instrument.
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RPT 301 User Manual |
Abbreviations and Symbols
The following abbreviations are used in this manual.
Note: Abbreviations are the same in the singular and plural.
EMC |
electromagnetic compatibility |
FS |
full-scale |
IEC |
International Electrical Council |
inHg |
inch of mercury |
kg/cm2 |
kilogram per centimetre squared |
kPa |
kilo Pascal |
mA |
milli Ampere |
mm |
milli metre |
NL, H & R |
non-linearity, hysteresis and repeatability |
PCB |
printed circuit board |
psi |
pound per square inch |
RPT |
resonant pressure transducer |
V |
Volt |
VA |
Volt amp |
The following symbols are used in this manual
Hazard, a warning highlighting a danger that would result in injury. Also a marking on the instrument referring the user to this publication.
This symbol, on the instrument or in the manual, indicates a static sensitive component.
This product meets the essential protection requirements of CE the relevant EEC directives. Further details of applied stand-
ards may be found in the product specification.
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|
Table of Contents |
|
1 |
Introduction ................................... |
1 |
1.1 |
Description ................................................ |
1 |
1.2 |
Specification .............................................. |
1 |
2 |
Installation ..................................... |
4 |
2.1 |
Mounting the Transducer ......................... |
4 |
2.2 |
Pressure Connection ................................ |
4 |
2.3 |
Electrical Connection ................................ |
6 |
3 |
Operation ....................................... |
11 |
3.1 |
System Operation ..................................... |
11 |
3.2 |
Command Summary ................................. |
11 |
3.3 |
General Command Format ....................... |
13 |
3.4 |
General Reply Format ............................... |
15 |
3.5 |
Error Message .......................................... |
15 |
3.6 |
Detailed Command Definitions ................ |
17 |
4 |
Calibration ..................................... |
23 |
5 |
Maintenance .................................. |
26 |
5.1 |
General ...................................................... |
26 |
5.2 |
LED Indicator ............................................ |
26 |
5.3 |
Diagnostic Mode ....................................... |
26 |
5.4 |
Cleaning .................................................... |
27 |
5.5 |
Approved Service Agents ......................... |
28 |
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K177 Issue No. 3
RPT 301 User Manual |
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1 Introduction
1.1Description
The RPT 301 Digital Output Pressure Transducer measures air pressure applied to the connection port and produces an electrical output. It comprises a resonant sensor connected to a printed circuit board to produce a serial digital output and is contained in a metal enclosure to IP65 standard. The instrument is designed to communicate with compatible equipment using a serial communications system which can be selected by the user for either RS232 or RS485 standard communications interface. The power supply for the instrument is a wide tolerance DC voltage with a low power consumption A remote start-up facility enables the instrument to be remotely switched on and off to save power.
1.2Specification
Accuracy
Non-linearity, hysteresis and repeatability:
Standard ................................................................. |
± 0.02% FS |
Option A .................................................................. |
±0.01% FS |
Temperature affects: ............... |
±0.02% FS over operating temperature range |
Long term stability: |
|
Standard ............................................. |
150 ppm per 12 months |
Option A ............................................. |
100 ppm per 12 months |
Ranges |
|
.................................................................. |
750 to 1150 mbar a |
.................................................................... |
35 to 1300 mbar a |
.................................................................... |
35 to 2620 mbar a |
.................................................................... |
35 to 3500 mbar a |
Dimensions |
|
Weight: ...................................................................................... |
0.65 kg |
Size: ...................................................... |
125 mm x 80 mm x 57 mm |
Environment |
-20 to + 60 C |
Operating temperature range ..................................................... |
|
Storage temperature range ......................................................... |
-40 to + 80 C |
Sealing: ........................................................................................... |
IP65 |
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RPT 301 User Manual |
Power supply |
|
Electrical Safety: .......................................... |
EN61010 (IEC 1010) as applicable |
Voltage .............................................................. |
4.5 to 32 V DC |
Power .......................... |
0.6 Watts at 5 V to 0.75 Watts at 32 V |
Electromagnetic compatibility |
|
............................................................ |
EN50081-1 (emissions) |
............................................................. |
EN50082-2 (immunity) |
Switch on |
|
Settling Time: ... Less than 5 seconds (with filtering disabled)
Pressure measurement |
|
Measurement cycle: ........................................ |
Fixed, nominally 0.5 seconds |
Reading Filter:
Single pole low pass filter, variable time constant and step response Reading Resolution: ........................ Programmable number of decimal places
Data Communications:
Serial RS232 or RS485 (selectable)
Software or hardware handshaking on RS232 software handshaking only on RS485.
A floating ‘volt free’ two-wire control input is provided to enable the instrument to be remotely switched on
or off. |
|
Pressure connection |
|
.............................................................................. |
G1/8 female |
overpressure ................................... |
1.25 x calibrated full-scale |
pressure containment ................................................... |
5 bar a |
Pressure medium compatibility: ....................... |
|
Dry gases compatible with: |
|
Glass, Silicon, Titanium, Stainless Steel and Epoxy adhesive
Note: Continuing development sometimes necessitates specification changes without notice.
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Accessories
The following items are delivered with the instrument after manufacture.
User manual K177 (this publication)
Calibration certificate
Mating electrical connector (if ordered)
K177 Issue No. 3
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