Major tech MT90, Instruction Manual

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5. Button Description
Power on/off, Auto-power off
Power on
: Press the button ‘ ’ to switch power on, system has a
default auto power off. Hold down the button to switch the
power on and disable auto power off function. Hold down
the button again to enable the auto power off function .
Power off : Press the button ‘ ’ to switch the power off.
Auto power off : Auto-power off signal ‘ ’ displays in the left corner
of LCD and the instrument will auto-power off in
10minutes of no button operations.
Note: Press the power on/off button for over 1 minutes, it will be
recognized as faulty operation and the instrument will auto
power off.
UNITS button : Press to switch air velocity unit; hold down to switch
temperature unit.
button : Hold down to activate or deactivate Bluetooth.
HOLD/ button : Press to hold the current data; hold down to activate
or deactivate back light.
MAX/MIN button : Press to record Maximum, Minimum and Average
readings of temperature and air velocity.
Note button is deactivated when holding the current : The MAX/MIN
readings.
Press the HOLD button to freeze the temperature and velocity readings,
meanwhile, the hold symbol is displayed on LCD when measures. Press
the
HOLD button again to return to normal measurement.
Data Hold
6. Operation and Settings
1. Turn on the instrument by pressing power on/off button.
2. Press UNITS button to select unit of measurement.
Note : After power on, the meter will display the preset unit before last
power off.
3. Put the instrument in the environment that is to be measured.
4. Observe readings on the LCD display, The larger digits displayed on
main LCD is Air Velocity reading. The smaller digits displayed on
upper right LCD is the temperature reading.
Temperature and Air velocity measurement
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