Vaisala GMP252 - 8 Operating with MI70 Indicator; Overview of MI70 Support; Probe Warm-Up and MI70 Automatic Power off; Basic Display

8. Operating with MI70
Indicator
8.1 Overview of MI70 Support
The probe is compatible with instruments that utilize the MI70 indicator, for example the
GM70 Hand-Held Carbon Dioxide Meter. The MI70 indicator is a convenient service tool for
viewing the measurement readings and performing calibration and one-point adjustment.
When MI70 is used with GMP252, it is recommended to use the rechargeable battery pack
instead of alkaline batteries due to the relatively high power usage in CO
2
measurement.
8.1.1 Probe Warm-Up and MI70 Automatic Power O
Note that the probe's warm-up time to full accuracy specification when starting up the
probe can be several minutes. When you power the probe with the MI70 indicator, disable
the automatic power o feature of MI70 to keep the probe powered on continuously in
order to avoid probe restart. To ensure powering during measurements, it is recommended
to use the MI70 charging adapter when possible.
8.2
Basic Display
Figure 27 MI70 Basic Display
1 Measured parameter and compensations
(up to three items on display
simultaneously). You can change the
shown items in Main menu > Display >
Quantities and units.
2 Battery indicator. Shows current status
(charge) of the battery.
3 Function key Graphic shows the readings
as a curve.
4 Function key Hold/Save freezes the
display and you can save the reading in
the MI70 memory.
5 Function key Record is a quick access to
the Recording/Viewing menu.
Chapter 8 – Operating with MI70 Indicator
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