Ashcroft GC52 - Rangeable wet/wet Differential Pressure Transmitter - Manual (Page 5)

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1. PREFACE
Thank you for purchasing the GC52 Rangeable Differential Pressure
Transmitter. Refer to the Ashcroft GC52 Data Sheet for product specifica-
tions and applicable operating conditions.
2. OVERVIEW
The GC52 is a 4-20mA loop powered (two-wire) differential pressure trans-
mitter with integral display incorporating Ashcroft’s proven SiGlas silicon
based variable capacitance sensor with stainless steel media isolation di-
aphragms and silicone pressure transmission fluid. The device was designed
to offer the user small size and user adjustable ranging for applications such
as tank level measurements and gas / liquid flow measurements.
3. FEATURES
(1) Media Compatibility:
Wetted materials consist of 316 stainless steel,
alumina ceramic and viton to handle a wide range of media with the
ability to offer ranges as low as 4˝ W.C. F.S. (URL).
(2) Linear Scaling Function: The linear (scaling) function allows the user
to adjust zero and span values providing a corresponding
4-20mA output signal.
(3) Flow Measurement/Square Root Extraction Function: Momentary
flow rate and integrated volume can be displayed and analog signal
can be output.
(4) Digital Filter Function: User adjustable damping of the output signal
by means of internally calculated moving average to provide a stable
output signal in applications where the user wants to reduce the pulsat-
ing of the display and / or output signal.
(5) LED Back Light: To supplement the LCD display when conditions re-
quire (dark area, night etc.).
(6) Loop Check Function
: Allows the user to output an analog signal cor-
responding to differential pressure without applying pressure, simplify-
ing system maintenance and troubleshooting.
• When disconnecting, remove the ground LAST!
Note: The shield and drain wire in the cable (if supplied) is not connected to the
transmitter body, and is not a suitable ground.