ADA INSTRUMENTS ZHT 100 (6 in 1), Operating Manual

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ZHT 100 (6 in 1)
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OPERATION INSTRUCTIONS
1. Unscrew and open the battery lid, place a 9V block battery and put back the battery lid.
2. Rotate the probe protection cap as the direction of arrow indicates while measuring, and make sure the sensor is fully exposed.
Press the power button to turn on the unit. To secure a stable reading, place the unit in the target environment for at least 1 minute.
The relative humidity is displayed on the upper part of the LCD, while the temperature is at lower part. The backlight turns off itself
in 10s, press any button to bring it back.
3. Switch between Celsius and Fahrenheit by pressing the C/F button. “°C” and “°F” will be shown accordingly.
4. Plug the external probe into unit’s JC port (refer to the product overview), to measure object’s surface and internal temperature.
5. If the external probe is not plugged in, press DEW button, and the temperature will be displayed on LCD screen switching between
T1 and Dew point only.If the external probe is plugged in, press DEW button,and the LCD screen will display the difference switch-
ing between T1,Dew point DP,Ambient temperature and ΔT=T1—T2.
6. If the external probe is not plugged in, press WBT button and it only shows WBT reading.If the external probe is plugged in,press
WBT button, and the LCD screen will display the value switching between Condensation temperature difference and web bulb tem-
perature.If removed, WBT value will be immediately displayed only.
7. Press MAX/MIN button to get the maximum and minimum readings of temperature and humidity,the corresponding value will be
displayed on the screen. Press continuously until the “MIN” and “MAX” symbol is not displayed to exit MAX/MIN mode.
8. Press HOLD to hold current temperature and humidity readings. Press again the release.
9. “Low battery” icon will be shown on the LCD when battery is low.
10. Press and hold the power button for 3s to power off the unit. When auto power off function is active, the unit will power off itself
in 20 minutes. Place back the protection cap when the unit is off.
11. Auto power off mode can be deactivated.Press the HOLD button first then press the ON/OFF to power on, with the full-displayed
information, the auto power off function will be deactivated.