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

6.5.6

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 1 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.
6.5.7

Checking CALOMAT 7 for leaks

Procedure
1. Connect a pressure measuring instrument (manometer) to the sample gas outlet.
Measuring range approx. 200 hPa rel. to 1000 hPa rel. with appropriate measured value
resolution (0.1 hPa).
Absolute pressure gauges with correspondingly good resolution are also suitable.
2. Connect the sample gas inlet to a compressed air source via a shutoff mechanism. The
shutoff mechanism must demonstrate a leakage rate < 10
3. Pressurize the analyzer module step-by-step with an overpressure of approx. 200 hPa.
4. Close the shutoff mechanism and wait for approximately 5 minutes until the sample gas that
flowed in has reached the ambient temperature.
5. Note the pressure.
6. Wait approximately 5 minutes. Note the pressure again.
If the pressure change lies under 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.
Devices in explosion-proof design
Compact Operating Instructions, 01/2022, A5E35134047-11
Commissioning
6.5 Checking gas paths for leaks
hPa*l/s.
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