Checking Oxymat 7 For Leaks; Checking Ultramat 7 For Leaks - Siemens SIPROCESS GA700 Compact Operating Instructions

6.5.3

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 pressure of approximately 3 000 hPa (absolute pressure) to the measuring inlet.
4. Then block the measuring inlet.
5. Wait for approximately 5 minutes until the sample gas that flowed 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.
This value is based on the tare volume of the measuring module of 7 ml and the volume of
the pressure measuring instrument of 23 ml.
6.5.4

Checking ULTRAMAT 7 for leaks

Note
Test values
The test values have been defined under the assumption that the total volume of the gas
path in the analyzer module and in the connection line of the pressure measuring device
amounts to 80 ml.
Procedure
1. Close the sample gas/reference gas outlet.
2. Connect the sample gas/reference gas outlet to a pressure measuring instrument
(manometer).
3. Pressurize the sample gas/reference gas path with overpressure of 100 hPa.
4. Wait for approximately 5 minute until the sample gas/reference gas reaches the ambient
temperature.
5. Note the pressure.
6. Wait approximately 5 minutes. Note the pressure again.
If the pressure change lies under 1 hPa, the sample gas/reference gas path is adequately
tight.
This value is based on the tare volume of the measuring module 7 ml and the volume of the
pressure measuring device of 25 ml.
Devices in explosion-proof design
Compact Operating Instructions, 05/2018, A5E35134047-03
Commissioning
6.5 Checking gas paths for leaks
61