Ashcroft 28HPX Инструкции по установке и обслуживанию - Страница 3
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Installation and Maintenance Instructions for
28HPX High Purity Gauge
TROUBLES
The pointer does not move.
The pointer does not indicate
pressure.
The pointer does not read zero
when the pressure gauge is
removed from the piping.
The pointer indicates overpressure
reading.
© Ashcroft Inc. 2020, 250 East Main Street, Stratford, CT 06614-5145, USA, Tel: 203-378-8281, Fax: 203-385-0357, www.ashcroft.com
All sales subject to standard terms and conditions of sale. 28_HPX_Gauge_im_RevA_(I&M011-10276)_04-03-20
CHECKPOINTS
1. Check if the pressure had been
applied to the pressure gauge.
1. Check whether the fluid and
ambient temperature are within
the operating temperature
range of the pressure gauge.
2. Check whether excessive
vibration exists.
3. Check whether excessive
pressure fluctuations exist.
1. Check whether excessive
pressure had been applied.
2. Check whether excessive
vibration or fluctuating pressure
had been applied.
1. Check whether excessive
pressure had been applied.
2. Check whether the gauge was
exposed to excessive vibration
or if it was dropped/impacted.
POSSIBLE CAUSES
1. The pressure is zeroed.
1. The operating temperature
range has been exceeded.
2. Movement wears due to
vibration.
3. Movement wears due to
pressure fluctuations.
1. The diaphragm has been
deformed due to excessive
pressure.
2. Movement wears due to
vibration or fluctuating
pressure.
1. Deformed sensing element due
to excessive pressure.
2. Pointer shift or material
deformation due to excessive
pressure or impact.
COUNTERMEASURES
1. Apply pressure.
1. Re-install pressure gauge in a
different position.
2. Re-install pressure gauge in a
different position.
3. Reduce pressure fluctuations.
1. Use a higher pressure range.
2. Re-install pressure gauge in a
different position.
1. Use a higher pressure range.
2. Be careful not to drop/impact
gauge.
3