Ashcroft GC35 설치 및 유지 관리 매뉴얼 - 페이지 4

{카테고리_이름} Ashcroft GC35에 대한 설치 및 유지 관리 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Ashcroft GC35 20 페이지. Heavy duty digital pressure sensor
Ashcroft GC35에 대해서도 마찬가지입니다: 빠른 시작 지침 (4 페이지), 빠른 시작 지침 (4 페이지)

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1. GENERAL:

A failure resulting in injury or damage may be caused by excessive overpressure, exces-

sive 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 questions or concerns.

2. OVERPRESSURE:

Pressure spikes in excess of the rated overpressure capability of the transducer may cause

irreversible electrical and/or mechanical damage to the pressure measuring and containing

elements.

fluid hammer and surges can destroy any pressure transducer and must always be avoided. A

pressure snubber should be installed to eliminate the damaging hammer effects. Fluid hammer

occurs when a liquid flow is suddenly stopped, as with quick closing solenoid valves. Surges

occur when flow is suddenly begun, as when a pump is turned on at full power or a valve is

quickly opened.

liquid surges are particularly damaging to pressure transducers if the pipe is originally empty.

To avoid damaging surges, fluid lines should remain full (if possible), pumps should be brought

up to power slowly, and valves opened slowly. To avoid damage from both fluid hammer and

surges, a surge chamber should be installed.

Symptoms of fluid hammer and surge's damaging effects:

• Pressure transducer exhibits an output at zero pressure (large zero offset).

• Pressure transducer output remains constant regardless of pressure

• In severe cases, there will be no output.

FREEZING:

Prohibit freezing of media in pressure port. Unit should be drained (mount in vertical position

with electrical termination upward) to prevent possible overpressure damage from frozen

media.

3. STATIC ELECTRICAL CHARGES:

Any electrical device may be susceptible to damage when exposed to static electrical charges.

To avoid damage to the transducer observe the following:

• Ground the body of the transducer BEFORE making any electrical connections.

• When disconnecting, remove the ground LAST!

Note: The shield and drain wire in the cable (if supplied) is not connected to the transducer body,

and is not a suitable ground.

WARNING! READ

BEFORE INSTALLATION