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

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USE IN LIFE SUPPORT DEVICES
Ashcroft Inc. products are not authorized for use as critical components in life
support devices or systems without the express written approval of the Gen-
eral Manager, Stratford Operations of Ashcroft Inc. As used herein:
Life support devices or systems are devices or systems which, (a) are in-
tended for surgical implant into the body, or (b) support or sustain life, and
whose failure to perform, when properly used in accordance with instructions
for use provided in the labeling, can be reasonably expected to result in a
significant injury to the user.
A critical component is any component of a life support device or system
whose failure to perform can be reasonably expected to cause the failure of
the life support device or system, or to affect its safety or effectiveness.
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)) 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.
((4)) LED Back Light: To supplement the LCD display when conditions re-
quire (dark area, night etc.).