Yamatake HGC303, User Manual

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Yamatake Corporation Operation
Model HGC303 - Heat Value Gas Chromatograph 3-3
3-1-4 : Model HGC303 leak check
After turning the model HGC303 on, conduct a leak test to verify that there is no
leakage of gas from the model HGC303.
The following procedures are for a simple leak test for the carrier gas line.
Carry out the leak test for the valve operating gas line in the same way.
Figure 3-1 Leak check
Table 3-3 Model HGC303 leak test procedure
Step Action
1 Check that the valve operating gas is being supplied.
2 Check the carrier gas has a secondary pressure (A) of 400 ± 50 kPa (58 ± 7
psi).
3 Verify that the carrier gas line valve off and observe the rate of fall in the
indicated primary pressure (B).
4 Leak evaluation procedure.
After introducing the carrier gas into the model HGC303, a normal condi-
tion is confirmed by a rate of fall of less than 1500 kPa (217 psi) per every 5
minutes.If more than 1500 kPa (217 psi) is observed, immediately contact a
Yamatake products service office listed at the back of this manual.
If the carrier gas is being used for valve operating gas at the same time, the
carrier gas consumption will be doubled. (less than 3000 kPa (435 psi) per 5
minutes)
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CAUTION
Verify that there is no leak from all connections.
(A)
(B)
HGC000011000D