DH Instruments GB-152, Руководство по эксплуатации и обслуживанию

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2. INSTALLATION
Page 9 ©1998-2008 DH Instruments, a Fluke Company
2.2.2.2 HIGH PRESSURE INSTRUMENT GAS
High pressure instrument gas is boosted by the booster and output from the
booster high pressure
OUT port .
High pressure instrument gas supply requirements are:
Flow rate: 140 slm (5 scfm) minimum
Cleanliness: Use clean, dry instrument grade gases only.
Pressure: 2 MPa (300 psig) minimum, 20 MPa (3 000 psig) maximum.
Maximum boosted pressure output is high pressure supply
times 25.
2.3 INSTALLATION AND SETUP
2.3.1 GENERAL CONSIDERATIONS
The GB gas booster system is divided into two parts: the gas booster itself and the Drive Air
Control Kit. The two parts are separate so that they may be installed separately.
The gas booster, which is large and relatively noisy, does not need to be accessed regularly.
It is generally mounted out of the way, for example behind and under a work bench.
The booster may be set horizontally or vertically.
The Drive Air Control Kit allows local control of booster operation. The output pressure of the
booster can be set by adjustment of the drive air pressure and the
SHUTOFF valve turns the
booster ON and OFF. The Drive Air Control Kit is presented on a bracket meant to be
mounted at a location convenient to the operator, for example on the front of a work bench.
When selecting the site for installation of the GB gas booster system, carefully consider
access for the connections that need to be made (drive air to the Drive Air Control Kit, high
pressure instrument gas to the booster, very high pressure gas output from the booster to the
test or calibration system).
The orientation of the booster is of no consequence to its operation. It may be installed
vertically, horizontally or any combination of the two with no affect on performance
or maintenance.
A variety of factors must be considered when determining where to locate the gas booster
and the Drive Air Control Kit. Factors include, but are not limited to:
•
If control over booster operation by the operator is desired, locate the Drive Air Control
Kit where it can be easily accessed;
•
The high pressure being generated and associated safety concerns;
•
The source of gas supplies (drive air supply and high pressure instrument
gas supply);
•
Point of use of output pressures;
•
Noise levels. The booster operation is noisy;
•
Vibration during use;
•
Access to the unit for operation of the regulators and valve;
•
Vents to atmosphere.