GE 5514, Руководство пользователя

Страница: 7 / 23

SECTION 1.0
PREPARATION
The Comparison Test Pump is used for checking pressure-measuring instruments against
Master Test Gauges.
Note: The terms ”Master Test Gauge” and “Gauge” in this document refer to any pressure-
measuring instrument such as Transfer Standards, Digital Calibrators and
Transducers.
This system is only as accurate as the Master Test Gauge used. The Master Test Gauge
must be regularly calibrated on a Primary Reference Standard (such as a Deadweight Tester)
to ensure accuracy is maintained.
The comparison test pump should be mounted securely to a stable workbench or similar
surface. Four mounting holes are provided in the pump stand for this purpose.
1.1 OPERATING FLUID COMPATABILITY
The standard system is designed for use with a wide range of fluids, however, the O-ring
seals are Nitrile; use of solvents, fuel oils, brake fluids or other, similar aggressive fluids can
damage the seals. The table below details the two alternative versions of this instrument,
which offer increased compatibility with other fluids.
Model O Rings
5514 Nitrile
5514-V Viton
5514-EP Ethylene Propylene
Rotate reservoir dust cover through ½ turn and fill reservoir approximately ¾ full with the
appropriate fluid. Rotate dust cover back to cover reservoir.
WARNING
To avoid damage to the instrument, the operator should check the quality of the operating
fluid during use. If the fluid becomes discolored, cloudy or particles appear in the reservoir,
the system should be drained and flushed with clean fluid.
1-1 PREPARATION