Chandler Engineering AMETEK 7200, Инструкция по эксплуатации

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SECTION 2 – OPERATING INSTRUCTIONS 2 - 3
Gas Injection Pressure regulator
This hand-adjusted, spring-loaded, outlet-pressure regulator is used to set the GAS
INJECTION PRESSURE required for each test. It is adjustable up to approximately 1500
psig (10,342 kPa, 10.34 MPa), but you must take care to not exceed the 1000-psig (6895-kPa,
6.895-MPa) maximum working pressure of the CHA. It is a self-relieving regulator and
should be turned fully counterclockwise (CCW) to reduce the pressure to atmospheric
pressure before assembling/disassembling or removing any part of the CHA downstream
from this regulator.
Gas Injection Pressure gauge
This 0 – 3000-psig (0 – 20700-kPa) dial pressure gauge indicates the GAS INJECTION
PRESSURE downstream of, and controlled by, the GAS INJECTION PRESSURE regulator.
Gas Injection Valve indicator light (LED, Light-Emitting Diode)
This green indicator light turns on to indicate when the GAS INJECTION valve is opened by
the CHA-Control software/hardware.
Gas Injection H
2
O Purge valve
This 2-way (on/off, open/closed) manual ball valve is opened to the DRAIN position
(horizontal, pointing to the DRAIN label), during test setup only, to back-fill the stem of the
CHA vessel and tubing up to this valve with water, purging any air from that portion of the
instrument. It is then closed (vertical position), and must remain closed, during any CHA test.
Air Supply Pressure Gauge
This 0 – 160-psig (0 – 1103-kPa) dial pressure gauge indicates the AIR SUPPLY
PRESSURE being supplied to the CHA. This low-pressure air is necessary to open and close
the air-actuated, remote-controlled ball valves (H
2
O CONFINING valve and GAS
INJECTION valve).
Air Supply Pressure Regulator
This hand-adjusted, spring-loaded, outlet-pressure regulator is used to set the air pressure
supplied to the electric solenoid valves, which control the air-actuated H
2
O CONFINING
valve and GAS INJECTION valve. It is not on the front panel but is inside the
instrumentation cabinet (on the right side of the oven). With air pressure supplied to the AIR
SUPPLY INLET bulkhead fitting (and measured by the AIR SUPPLY PRESSURE gauge on
the front panel), pull the regulator knob upward to unlock it, and then adjust the regulator
outlet pressure to between 20 psig minimum and 100 psig maximum, as measured by the
small gauge mounted on the regulator. Then, push the regulator knob downward to lock in
the setting.
H
2
O Supply Pressure gauge
This 0 – 160-psig (0 – 1103-kPa) dial pressure gauge indicates the H
2
O SUPPLY
PRESSURE being supplied to the CHA. This low-pressure water is necessary to fill the
bladder ACCUMULATOR, so that the water can be injected into the CHA Vessel, on the
underside (bottom side) of the diaphragm.