Measuring Multiple Parameters Simultaneously - Vaisala DRYCAP DM70 Kurzanleitung

8. Make sure that the valve of the sampling cell is open. First close the valve, then turn it
halfway open again. You can also first open the valve more to ventilate the parts, then
readjust it to allow only a small leakage.
Figure 3 Turning sampling cell valve screw with flat head screwdriver
To verify that the leak screw is open, close the screw and then listen for a
barely audible hiss when reopening the screw (1/2 turn). A light air flow can
be felt when placing a hand over the opened valve.
9. If the sampling cell is installed correctly, there is no leakage in the connections. You can
test this by closing the valve temporarily.
CAUTION!
pressure drop in the sampling cell. If the pressure drops too much,
measurement accuracy can be affected significantly.
3.4 Measuring multiple parameters simultaneously
MI70 is a generic indicator that can be used with Vaisala interchangeable dew point
(DM70 series), humidity (HM70 series), carbon dioxide (GM70 series), and moisture in oil
(MM70 series) probes. Two different types of probes can be connected to MI70 simultaneously.
Do not open the leak screw more than 1/2 turn to limit the
Chapter – Taking measurements
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