3.4 Installation and Sample
1. Install the sample piping system and equipment as per the required installation
configuration.
NOTE: The SADPmini2 is not connected to the inlet piping system at this stage.
2. Open the sample Isolation Valve and adjust the needle valve/ regulator to allow a
flow of 5-15 litres per minute to atmosphere through to sample pipe.
3. Allow the gas to flow through the sample pipe for 2 minutes to purge the system.
4. After ensuring that the sample gas is clean and dry connect the sample pipe to
the instrument.
NOTE: The orientation of the ports is not important.
5. When the sample flow is low or very dry gas is being measured connect a >20 cm
pipe to the outlet port to prevent back diffusion.
Failure to purge the system may expose the SADPmini2 to residual moisture and/ or
liquid or particulate damage. Use white/ filter paper to check for dust or oil mist in
the sample
6. Allow the gas to flow through the SADPmini2 for two minutes.
7. Press the power button on the SADPmini2 and ensure that the sensor is ‘dry’.
8. Block the instrument outlet, e.g. cover with a finger and allow the Desiccant Head
to extend fully.
NOTE: Do not lift the Desiccant Head manually as this will draw ambient air into
the sample chamber and produce a false reading.
9. Unblock the outlet and allow the gas to flow through the sensor.
10. The displayed reading will rise until the sensor is in equilibrium with the sample
gas.
11. When the displayed reading has settled record the final reading.
12. When completed manually depress the Desiccant Head fully.
NOTE: It is important to make sure the Desiccant Head is depressed fully when
the instrument is not in use to prevent the sensor and desiccant material
becoming saturated.
13. Close the sample Isolation Valve.
14. Press and hold the power button for two seconds to switch off the SADPmini2.
15. Disconnect the sample pipework from the SADPmini2.
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