1 Shut-o valve
2 Pressure regulator
3 Manometer (gauge pressure)
4 Unscrewing blanking plugs
5 Unscrewing blanking plugs
6 Sample gas outlet
7 Sample gas inlet
5.4.2 Leakage tests
5.4.2.1 Checking OXYMAT 7 for leaks
Procedure
1. Close the reference gas inlet.
2. Connect the sample gas outlet to a pressure measuring instrument.
3. Apply a overpressure of 2000 hPa (relative pressure) to the measuring inlet.
4. Then block the measuring inlet.
5. Wait for 5 minutes until the sample gas that owed in has reached the ambient temperature
and the pressure is stable.
Note the pressure.
6. Wait an additional 5 minutes and note the pressure again.
If the pressure change is less than 5 hPa, the sample gas path is adequately tight.
Commissioning
5.4Checking gas paths for leaks
SIPROCESS GA700 rack and wall mounted devices
74 Compact Operating Instructions, 06/2023, A5E35134047-AB
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