Commissioning
7.6 Requirements for startup
Quick Start
Compact Operating Instructions, 05/2018, A5E31805656-06
83
Checking the 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. T
he
s
hutoff mechanism must demonstrate a leakage rate < 10
-5
hPa*l/s.
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.
You have ensured that
● The device has at least one analyzer module,
● All required gas lines and facilities are connected to the device and are checked for leaks
and tightness with an overpressure,
● No gas has been introduced into the device yet.
Information on how to connect the gas lines correctly is availabl
e
● in section "Gas connections (Page 39)" and
● in the device-specific operating instructions (Page 135).
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