Installation Instructions
Introduction
The Ultra Low Pressure Transmitter is used to measure differential
pressure in the range of 0.125 to 1"wc (30 to 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 warmup, long term instability and position
sensitivity. It is ideal for monitoring pressure for air or other clean inert
gas. It features several field selectable uni- or bi-directional pressure
ranges and output signal types for the most flexible application. The
device has an on-board auto-zero function as well as a connection for
remote zeroing. Options include an LCD to display the pressure value
and an alarm relay with a variable trip point.
Before Installation
Read these instructions carefully before installing and commission-
ing the Pressure Transmitter. Failure to follow these instructions
may result in product damage.
Do not use in an explosive or hazard-
ous 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.
Figure 1
Mounting
Mount the device using the four holes on the base of the unit. 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 right.
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.
Open the hinged cover by releasing the latch and connect the device
according to the wiring instructions. After wiring and setup are
complete, close and latch the cover. The cover may be secured with
two self-tapping screws in the holes provided.
as shown in figure 1.
The enclosure has a hinged cover with latch. Open cover by pulling
slightly on the latch on the right side of the enclosure. At the same
time pulling on the cover, as illustrated in figure 2.
Feed conduit/cable gland fitting through the provided hole in side of
enclosure and secure with a lock nut as show in figure 3. It is recom-
mended that weatherproof conduit or cable gland fittings be used.
Make wiring connections as per the “Wiring” illustrations on Page 3.
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 2
Figure 4
Figure 3
Conduit
Ultra Low Pressure Transmitter
ULP
Greystone Energy Systems, Inc. 150 English Drive, Moncton, NB E1E 4G7 Canada Tel: +1-506-853-3057 Tollfree (North America): +1-800-561-5611 Fax: +1-506-853-6014
Email: [email protected] Web: www.greystoneenergy.com
