Chandler Engineering AMETEK 7200, Инструкция по эксплуатации

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SECTION 2 – OPERATING INSTRUCTIONS 2 - 1
Section 2 - Operating Instructions
Front-Panel Valves, Indicators, and Controls
The Flow Diagram / Plumbing Schematic drawing #7200-1020
(found in the Drawings and
Schematics section of this manual) provides an illustration of the valves and flow paths for
the Model 7200 CHA. The function of each valve is detailed below:
Gas Supply valve
This 2-way (on/off, open/closed) manual ball valve is used to block or allow N
2
(nitrogen)
gas supply pressure into the instrument. This valve must be open, to provide N
2
gas supply
pressure to the inlets of the pressure regulators when conducting any test with the instrument,
and during later parts of the setup of the test. After the test is finished (and during any
assembly/disassembly or removal of the CHA vessel and stand), this valve must be closed to
prevent continued pressurization of the system.
Gas Supply Pressure gauge
This 0 – 3000-psig (0 – 20700-kPa) dial pressure gauge indicates the N
2
GAS SUPPLY
PRESSURE downstream of the GAS SUPPLY valve.
H
2
O Confining Pressure regulator
This hand-adjusted, spring-loaded, outlet-pressure regulator is used to set the H
2
O
CONFINING 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.
H
2
O Confining Pressure gauge
This 0 – 3000-psig (0 – 20700-kPa) dial pressure gauge indicates the H
2
O CONFINING
PRESSURE downstream of, and controlled by, the H
2
O CONFINING PRESSURE regulator.
H
2
o Confining Valve indicator light (LED, Light-Emitting Diode)
This green indicator light turns on to indicate when the H
2
O CONFINING valve is opened by
the CHA-Control software/hardware.