4
WARNING! READ BEFORE INSTALLATION
4
m
m
DESCRIPTION:
The Ashcroft Model GXLdp Differential In-
dicating Pressure Transmitter is to be used
with clean, dry, non-corrosive gases. The
accuracy is ±0.25% or ±0.50% of Span
Terminal Point, and its performance is
traceable to the U.S National Institute of
Standards and Technology (NIST). Both
unidirectional (e.g. 0 to +1.0 in. H
2
O) and
bidirectional (e.g. ±0.25 in. H
2
O) type ranges
are available.
GENERAL:
A failure resulting in injury or damage may be
caused by excessive overpressure, excessive
vibration or pressure pulsation, excessive
instrument temperature, corrosion of the
pressure containing parts, or other misuse.
Consult Ashcroft Inc. Stratford, Connecticut,
USA before installing if there are any ques-
tions or concerns.
OVERPRESSURE:
Pressure spikes in excess of the rated over-
pressure capability of the transmitter may
cause irreversible electrical and/or mechan-
ical damage to the pressure measuring and
containing elements.
STATIC ELECTRICAL CHARGES:
Any electrical device may be susceptible to
damage when exposed to static electrical
charges. To avoid damage to the transducer
the operator/installer should follow proper
ESD (electrostatic discharge) protection
procedures before handling the pressure
transducer.
INSTALLATION AND WIRING INSTRUCTIONS
Mounting:
The GXLdp transmitter can be mounted on
a 35 mm DIN rail or with #8 or #10 screws
using the 3 mounting holes provided. Torque
limits on the three mounting holes provided is
9.6 inch-pounds. For optional panel mounting
information, please refer to page 21.
Electrical Wiring:
To open the housing, push the latch through
the opening on the right side of the unit
until the font cover releases from the body.
Connect wiring to the pluggable/unpluggable
terminal block. See wiring diagrams on pages
17-18. Use a screwdriver to tighten after
the stripped wire is fully inserted. To close
the unit, press the front cover against the
rear cover firmly until the latch engages. The
use of shielded cable is recommended for
optimum performance. Connect the shield to
the guard terminal on the reading instrument
(meter etc.) if available or to ground.
The GXLdp will automatically detect if a
2-wire or 3-wire power supply has been used
to power up the device.
