Siemens SIPROCESS GA700 - [2.09] Settings > Inputs;outputs; [2.09.1] Analog inputs

Test setup for leakage test with ULTRAMAT 7 high-temperature
To check for leaks, we recommend the following test setup:
X
Z
Y
1
2
4
3
① Shut-o󹪜 valve
② Pressure regulator
③ Manometer (gauge pressure)
1 Sample gas inlet
2 Sample gas outlet
3 Unscrewing blanking plugs
4 Unscrewing blanking plugs
Figure9-6 Recommended test setup for leakage test with ULTRAMAT 7 high-temperature
9.6.5 Checking OXYMAT 7 for leaks
Procedure: Devices with pipes
1. Close the reference gas inlet.
2. Connect a pressure measuring instrument (manometer) to the sample gas outlet.
3. Carefully apply pressure of approximately 3000 hPa (absolute pressure) to the measuring
inlet.
4. Then shut o󹪜 the measuring inlet.
5. Wait for approximately 5 minutes until the test gas that 󹪞owed in has reached the ambient
temperature and the pressure remains 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 7 ml and the volume of the
pressure measuring device of 23 ml.
Commissioning
9.6Checking gas paths for leaks
Wall-mounted device
Operating Instructions, 07/2023, A5E31930403-AB 137