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Figure 1-2.
Leak check diagram.
Checking for Leaks
After the connections are made at the inlet and outlet, the analyzer should
be pressure-checked at 10 PSIG. If the pressure drops at all over a five-
minute time interval, follow the method outlined below and then check
all joints for leaks using the "snoop" or soapy water method.
N2
Test Gas
Valve
1
1. Connect the analyzer between two valves as shown in Figure 1-2.
2. Set the N
test gas outlet pressure to 10 PSIG.
2
3. Open Valves 1 and 2 and allow the N
4. Close Valve 2, and when the pressure gauge reads 10 PSIG, close Valve 1.
If the pressure reading is above 9 PSIG after one hour, the unit is accept-
able. If the pressure is below 9 PSIG , there is a leak that must be repaired.
repositioning the Gas Inlet/Outlet
Connections
You can change the orientation of both the
sample gas inlet and outlet from horizontal.
1. Locate the Swagelok fitting near the IN
/OUT labels on the right-hand side of the
unit.
2. Loosen the Swagelok fitting and rotate it
to the new position.
3. Tighten snug by hand or lightly seat the
nut using a wrench. Using a wrench,
tighten an additional 1/4 turn.
Pressure
Gauge
120 HN
gas to flow.
2
Overview and Installation
Vent to Air
Valve
2
|
1-5
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