Siemens ULTRAMAT 23, Manual, Page: 81 / 244

Commissioning
6.3 Preparation for commissioning
ULTRAMAT 23
Manual, 3/2016, A5E37100388-003
81
6.3 Preparation for commissioning
6.3.1 Leaks in the gas paths
Checking for leaks is most easily performed by connecting a U-tube manometer to the
sample gas inlet. You can check for leaks as follows:
1.
Block the sample gas outlet
2. Create an overpressure of around 150 hPa (rel.) at the sample gas inlet.
3. Wait for about 60 seconds for the temperature of the incoming gas to be compensated.
4. Read the pressure on the manometer and note it
5. Wait a further 15 minutes and note the pressure again after this period.
6. Compare the two pressure values.
The sample gas path is sufficiently tight when the pressure has changed by no more than
2 hPa (2 mbar) over 15 minutes.
For analyzers with H
2
S sensors:
The sample gas path is sufficiently tight when the pressure has changed by no more than
5 hPa (5 mbar) over 15 minutes.
NOTICE
Damage to the analyzer chambers
If you apply a pressure above the maximum value, the bonding of the analyzer chamber
windows could be broken. Discharge of sample gas is possible.
Please observe the pressure data in the section Technical specifications (Page 31).
6.3.2 Gas preparation
Make all gas preparation elements upstream of the analyzer (gas sampling devices, gas
cooling devices, condensation vessels, filters, and any connected controllers, recorders or
indicators) ready for operation. Refer to the associated operating instructions.
6.3.3 Device interfaces
Check that all device interfaces (see Communication (Page 57)) are properly assigned and
configured.