GREYSTONE GP Series Gage Pressure Transmitter Instruction Manual
- June 9, 2024
- Greystone
Table of Contents
GREYSTONE GP Series Gage Pressure Transmitter
Gage Pressure Transmitter – GP Series
Product Information:
The Gage Pressure Transmitter GP Series is a device designed to measure high pressure in several ranges up to 500 PSI, 35 Bar or 3500 kPa. It features a single remote sensor that is fully factory calibrated and temperature compensated for high start-up accuracy. The transmitter can handle overload pressure 2X the maximum full scale range and burst pressure is 5X the maximum full scale range. Additionally, it has field selectable pressure ranges and output signal types, output reversal, and slow-damping for the most flexible applications.
The device is not recommended for use in an explosive or hazardous environment, with combustible or flammable gases, as a safety or emergency stop device or in any other application where failure of the product could result in personal injury. Additionally, electrostatic discharge precautions should be taken during installation, and device ratings should not be exceeded.
Product Usage:
Before Installation:
Read the provided instructions carefully before installing and commissioning the transmitter. Failure to follow these instructions may result in product damage. Ensure that the maximum port pressure does not exceed the highest pressure range of the device. Avoid locations with severe vibrations or excessive moisture.
Mounting:
The transmitter mounts on a vertical surface using the two integrated mounting holes. The remote sensor cable connection should be located on the bottom of the enclosure. Ensure there is enough space around the unit to make the electrical connections and that it is within an acceptable distance for the length of remote sensor cable. The enclosure has a standard opening for a conduit connector or cable gland type fitting. The enclosure has a hinged cover with a latch. Open the cover by pulling slightly on the latch on the bottom side of the enclosure and at the same time pulling on the cover. A 1/2 NPT threaded connection hole is provided on the left side of the enclosure. Screw the EMT connector or cable glam connector in until it is tight. Use weatherproof conduit or cable gland fittings.
Plumbing:
The stainless steel pressure sensor incorporates 1/4 NPT male threads for connection to the pipe being monitored. Do not allow material to fall into the pressure ports as contamination could damage the sensors. It is recommended to use Teflon tape to prevent leaks. Remove the pressure sensor from the remote cable by unscrewing and pulling apart from the remote cable boot. Wrap 1/4 NPT male sensor threads with Teflon tape. Screw into the sensor port on the pipe being monitored until finger tight. Using an appropriate size wrench, tighten the fitting until snug. Reconnect the remote sensor cable by aligning the remote sensor cable boot and screwing onto the sensor.
INTRODUCTION
The gage pressure transmitter is designed with a single remote sensor that
enables it to accept high pressure in several ranges up to 500 PSI, 35 Bar or
3500 kPa. All models can handle overload pressure 2X the maximum full scale
range and burst pressure is 5X the maximum full scale range.
Features include field selectable pressure ranges and output signal types,
output reversal and slow-damping for the most flexible applications. The
pressure transmitter is fully factory calibrated and temperature compensated
for the highest start-up accuracy.
WARNING : Ensure that the maximum port pressure does not exceed the highest pressure range of the device. For example, the maximum port pressure on a 102 model is 100 PSI. Exceeding this may give erroneous readings or damage the sensor. See Figure 12 for ratings.
INSTALLATION
Read these instructions carefully before installing and commissioning the transmitter. Failure to follow these instructions may result in product damage. Do not use in an explosive or hazardous environment, with combustible or flammable gases, as a safety or emergency stop device or in any other application where failure of the product could result in personal injury. Take electrostatic discharge precautions during installation and do not exceed the device ratings.
MOUNTING
The transmitter mounts on a vertical surface using the two integrated mounting holes. The remote sensor cable connection should be located on the bottom of the enclosure. The two mounting holes will facilitate a #10 size screw (not supplied). See Figure 1. Ensure there is enough space around the unit to make the electrical Figure 1 connections and that it is within an acceptable distance for the length of remote sensor cable. Avoid locations with severe vibrations or excessive moisture. The enclosure has a standard opening for a conduit connector or cable gland type fitting.
The enclosure has a hinged cover with a latch. Open the cover by pulling slightly on the latch on the bottom side of the enclosure and at the same time pulling on the cover, as illustrated in Figure 2.
A 1/2″ NPT threaded connection hole is provided on the left side of the enclosure. See Figure 3.
Screw the EMT connector or cable gland connector in until tight. It is recommended that weatherproof conduit or cable gland fittings be used. The F style enclosure includes 1/2″ NPT to M16 thread adapter and cable gland fitting. See Figure 4.
Two security screws are provided which can be installed to help secure the cover once settings and wiring connections are complete. See Figure 5.
PLUMBING
The stainless steel pressure sensor incorporates 1/4” NPT male threads for
connection to the pipe being monitored. See Figure 6. Do not allow material to
fall into the pressure ports as contamination could damage the sensors. It is
recommended to use Teflon tape to prevent leaks.
Remove the pressure sensor from the remote cable by unscrewing and pulling apart from the remote cable boot as shown in Figure 7. Wrap 1/4” NPT male sensor threads with Teflon tape. Screw into the sensor port on the pipe being monitored until finger tight. Using an appropriate size wrench, tighten the fitting until snug as shown in Figure 8. Reconnect the remote sensor cable by aligning the remote sensor cable boot and screwing onto the sensor. See Figure 9.
CONFIGURATION
Most configuration is done using User Menu setting with LCD and push buttons
on the PCB. See User Menu section for details.
Warning: The transmitter must not have power applied during set up or when making changes to the output signal.
OUTPUT SELECTION : The transmitter features user-selectable output signals of 4-20 mA, 0-5 Vdc and 0-10 Vdc. It is factory configured to operate in the Current (4-20 mA output) mode, but can be changed to Voltage mode by moving the output selection jumper from the position marked mA to the position marked VOLT as shown in Figure 10. In Voltage mode the output scale may be changed to either 0-5 or 0-10 Vdc by accessing under User Menu.
WIRING
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Deactivate the 24 Vac/dc power supply until all connections are made to the device to prevent electrical shock or equipment damage.
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Use 14-22 AWG shielded wiring for all connections and do not locate the device wires in the
same conduit with wiring used to supply inductive loads such as motors. Make all connections in accordance with national and local codes. -
Pull at least six inches of wire into the enclosure, then complete the wiring connection according to the wiring diagram for the applicable power supply and output signal type.
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Connect the plus DC or the AC voltage hot side to the PWR terminal. For voltage output or AC power, the supply Common is connected to the COM terminal. DO NOT connect power to the OUT terminal as the device will be damaged. It has half-wave power supply so the supply Common is the same as the signal Common. See Figure 11.
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The analog output is available on the OUT terminal. Check the controller Analog Input to determine the proper connection before applying power.
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If using the Zero function, connect the Remote Zero Switch between the ZERO and COM terminals.
START-UP
Upon applying power to the device, it will enter the start-up mode.
The LCD will display the current operating settings for 2 seconds each.
- SOFTWARE VERSION NUMBER
- Version 1.00
- MODEL PRESSURE RANGE
- P Range 50PSI
- THE OUTPUT TYPE
- Output 4-20mA
At the end of start-up mode the device will enter normal mode displaying pressure read from sensors.
- 0.0 PSI
USER MENU
The User Menu can be accessed by pressing the