Vaisala HUMICAP HM70 - Measuring Multiple Parameters Simultaneously

3.3
Measuring multiple parameters simultaneously
MI70 is a generic indicator that can be used with Vaisala interchangeable dew point
(DM7
0 series), humidity (HM70 series), carbon dioxide (GM70 series), and moisture in oil
(MM70 series) probes. Two dierent types of probes can be connected to MI70 simultaneously.
1. Switch o the MI70 indicator.
2. Connect the 2 probes to the connector ports (port I and II) on the bottom of the indicator.
3. Switch on MI70.
4. Check that the environment settings of the probes in port I and II are the same if you are
taking measurements from the same condition. In this case, select
Y
es when MI70
prompts you to check the environment settings.
5. When measuring humidity and CO
2
simultaneously, you can use the HMP70 probe's
temperature data to compensate the CO
2
measurement.
a. Select temperature (T) and press
Se
t.
b. MI70 asks if you want to link the measured T value to environment parameter: to link,
press
Link and then pr
ess
Exit.
6.
The reading of the probe in port I is now displayed on the upper row(s) and the reading of
the probe in port II on the lower row(s) of the MI70 display.
Figure 3 Display example with carbon dioxide and temperature and humidity probes
c
onnected simultaneously
M212070EN-B
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