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The following operational sequences will allow the filling of the reference cell with the three gases:
- Fill with N
- Step 1: Vent to 16 psia.
- Step 2: Evacuate until vacuum reaches 1 mtorr.
- Step 3: Hold the N
button down while checking the high-pressure gauge, until the desired pressure is established.
- Repeat steps 2,and 3 three times.
- Fill with
He
- Step 1: Vent to 16 psia.
- Step 2: Evacuate until vacuum reaches
mtorr.
- Step 4: Hold the
He button down while checking the high-pressure gauge, until the desired pressure is established.
- Repeat steps 2, and 3 three times.
- Fill with
He
- Step 1: Vent to 16 psia.
- Step 2: Evacuate until vacuum reaches
mtorr.
- Step 4: Hold the
He button down while checking the high-pressure gauge, until the desired pressure is established.
The pressure at the location of the gas
manifold is measured by a baratron gauge. The baratron
pressure is read into the data stream and is also output to a remote
sensing unit located in the counting house.
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Xiaochao Zheng
2001-06-01