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2.2 Operating Procedure (cont.)
6. Open and adjust the valves on both the
that the steel ball indicates approximately
7. Adjust the vent valve so that the steel ball on the
IMPORTANT: Leak test all connections from the nitrogen supply to the calibration chamber before proceeding.
8. Allow the nitrogen to purge through the entire system at the rotameter settings defined in the previous steps. The
calibration system will begin to dry down and eventually come to equilibrium with the dry nitrogen supply gas.
The time required to achieve equilibrium will vary depending on the moisture level of the nitrogen (approximately
6 to 18 hours will be required).
9. After the calibration system has reached equilibrium, set the valve on the
Wet/Dry
Selector Valve
Wet Gas
Dry Gas
First Dilution
MG-101 User's Manual
DRY GAS FIRST DILUTION
"10"
on the rotameter scales.
WET GAS DILUTED
Vent Valve
Rotameters
Figure 6: Rotameters and Valves
Chapter 2. Setup and Operation
and the
DRY GAS SECOND DILUTION
rotameter also reads approximately
WET/DRY
rotameter to the
Temperature
Gauge
Wet Gas
Diluted
Dry Gas
Second Dilution
rotameters, so
"10."
WET
position.
9
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