Ashcroft GC52 - Rangeable wet/wet Differential Pressure Tra Manual de usuario descargar pdf (Pagina 5)

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.

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Ashcroft GC52 - Rangeable wet/wet Differential Pressure Tra Manual de usuario Pagina 5