Vaisala Humicap HMW60U Guía de usuario Pagina 17

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Chapter 4 ______________________________________________________ Taking Measurements
VAISALA _______________________________________________________________________ 15
CHAPTER 4
TAKING MEASUREMENTS
If you are starting the HM70 for the first time, see Chapter 3
Preparations Before Use first.
To take measurements with the HM70, follow the instructions below:
1. Connect the probe to MI70-indicator.
2. Press POWER ON/OFF button.
3. If you have a chemical purge option in your probe (HM70 series
probe versions B), remember to carry out chemical purge
regularly, see page 34.
4. In case there is a risk for condensation, use the optional preheat
(HM70 series probe versions B) when installing the probe, see
page 36.
5. Install the probe to the measuring position. If measuring in
pressurized processes, see the instructions on page 21.
6. Before measurements, ensure that the air pressure setting of
HM70 is correct. See page 21.
7. The basic display opens. Let the reading stabilize.
CAUTION
If you need to disconnect the probe from the indicator, first press
POWER ON/OFF button to turn the indicator OFF. This ensures that all
settings and data are saved properly.
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