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INTRODUCTION

The Ultra Low Pressure Transducer is used to measure 

differential pressure up to 1"wc or 250 Pa. It combines 

precision high sensitivity silicon sensing capabilities and 

the latest ASIC technology to substantially reduce offset 

errors due to changes in temperature, stability to warm-

up, long term instability and position sensitivity. It is ideal 

for monitoring pressure for air or other clean inert gas. 

It features bi-directional pressure measurement, an on-

board auto-zero function, a backlight LCD to display the 

pressure value and an alarm relay with variable trip points. 

The device is field-configurable via the local menu.

BEFORE INSTALLATION

Read these instructions carefully before installing and commissioning the UP Pressure Transducer. 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 Ultra Low Pressure Transducer mounts using the two holes on the base of the unit. See Figure 1. Leave 

enough space around the unit to connect the pressure tubing and avoid locations with severe vibrations, 

excessive moisture or rapid temperature changes. It should be mounted on a vertical surface with the 

pressure ports on the bottom and the cable entrance on the left. 

The enclosure has a standard ½” conduit opening and may be installed with either conduit and a conduit 

coupler or a 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 of the enclosure. At the same time pulling on the cover, as illustrated in Figure 2.

A 1/2" NPT threaded connection hole is provided in the bottom of the enclosure. Screw the EMT connector 

or cable gland connector in until tight. See Figure 3. 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.

Make wiring connections as per the “Wiring” illustrations on Page 2.

Swing door closed until securely latched. For added security, 2 

screws are provided that may be installed in the integrated screw 

tabs. See Figure 4.

Figure 1

Figure 3

Figure 2

EMT Connector

Thread adapter and 

cable gland fitting

Figure 4

IN-GE-UPXXX-01 07/20

Copyright © Greystone Energy Systems, Inc.   All Rights Reserved    Phone:  +1 506 853 3057  Web: www.greystoneenergy.com

Ultra Low Pressure Transducer

UP Series - Installation Instructions

Summary of Contents for UP Series

Page 1: ...nit See Figure 1 Leave enough space around the unit to connect the pressure tubing and avoid locations with severe vibrations excessive moisture or rapid temperature changes It should be mounted on a vertical surface with the pressure ports on the bottom and the cable entrance on the left The enclosure has a standard conduit opening and may be installed with either conduit and a conduit coupler or...

Page 2: ...ected to a powered input or device damage will result Check the controller Analog Input to determine the proper connection before applying power Both current and voltage signals are referenced to the COMMON terminal The voltage output signal has a minimum load that it is able to drive similarly the current signal has a maximum load Follow the ratings in the Specification section or inaccurate read...

Page 3: ...y at any time after the start up mode Upon applying power to the device it will enter the start up mode During start up the alarm condition is set to off so the relay is off and the analog output is set to the midpoint The LCD will display all segments for 2 seconds and then the software version number such as 1 USER MENU The User Menu can be accessed by pressing the MENU key at any time after the...

Page 4: ...gh pressure alarm limit defaults to about 75 of the range This equals 0 50 for the 1 wc range 130 for the 250 Pa range etc It can be changed using UP or DOWN throughout the range Resolution for each range is 1 wc 0 05 0 25 wc 0 01 250 Pa 10 and 60 Pa 2 Note that the 250 Pa range must be displayed as 10 such that it is 25H to 25H 7 HIGH PRESSURE ALARM MENU Press to advance to next menu item MENU WC...

Page 5: ...u During normal mode the device also compares the output pressure value to the alarm setpoints and takes appropriate action If the pressure value exceeds the setpoints then an alarm condition is set and the device will operate in alarm mode Alarm mode activation is controlled by certain delay times and user settings described later During normal mode the device also monitor the UP DOWN and MENU ke...

Page 6: ...e 38 1 x 16 5 mm 1 5 x 0 65 Digit Height 11 43 mm 0 45 Symbols WC Pa Backlight Enable disable auto ALARM FUNCTIONS Alarm Relay Output N O contact 2 Amps 120 Vac or 30 Vdc Alarm Relay Trip Point Upper and Lower alarms adjustable over pressure range Alarm Relay Delay 0 to 10 minutes via keypad GENERAL Storage Temperature 40 to 95 C 40 to 203 F Wiring Connections Screw terminal block 14 to 22 AWG Pre...

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