DH Instruments GB-H-152-100M, Руководство по эксплуатации и обслуживанию

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3. OPERATION
Page 13 © 2008 DH Instruments, a Fluke Company
3.3.2 INCREASING PRESSURE
n
Close or plug the high pressure out circuit to prevent gas flow (circuit is dead ended).
o
Adjust the high pressure adjust regulator by rotating the knob clockwise until the desired
pressure is indicated on the high pressure gauge. To correctly set the pressure, gas flow
must not occur. If flow is present in the circuit when the regulator is adjusted, the
pressure will increase when flow is reduced.
3.3.3 DECREASING PRESSURE
The high pressure adjust regulator is a venting type. Therefore, it is possible to regulate
pressure down without gas flow through the regulator.
n
Adjust the pressure down using the high pressure adjust regulator by rotating the knob
counter-clockwise until a pressure below the setpoint is achieved as indicated on the
high pressure gauge.
o
Set the pressure to the final setpoint by rotating the knob clockwise until the desired
pressure is indicated on the high pressure gauge.