Air Velocity Measurement - Amprobe TMA-20HW Manual De Uso

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Air Velocity Calibration mode
• Push "SET" key six times to enter this mode, the "USEr CAL no" symbol is
displayed.
• Push "" and "" keys to select "
• Push "↵" key to enter the air velocity zero calibration mode, the "CAL 0"
symbol is displayed.
• Recover the sensor protection cap, until the air velocity reading is stable
then push "↵" key to store the zero air velocity reading, and enter the air
velocity scale factor calibration mode, the scale factor value is displayed.
• Insert the meter probe into the tunnel with the sensor window toward
the air flow. Secure the probe firmly with the velocity sensor placed
where air speed is known.
• Push , ,  and  keys to setting the scale factor value until the display
reading reaching desired value, then push "↵" key to store the scale
factor value, "CAL PASS" will display one second.
• Push "SET" key several times until the " SET " symbol is disappeared to
exit the setting mode.
Reset to Factory Default Calibration value mode
• Push "SET" key seven times to enter this mode, the "dEF CAL" symbol is
displayed.
• Push "" and "" keys to select "
push "↵" key will reset to factory default calibration value and exit
setting mode.

Air Velocity Measurement

• Push key to turn on the meter.
• The display will show the air velocity reading directly on the Air Velocity
Display.
• Push "UNIT" key to select the desired measurement unit.
• Push " H HOLD" key to freeze or unfreeze the display readings. In HOLD
mode, the " H " symbol is displayed and push "UNIT" key to select
another display units reading.
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" symbol is displayed.
" or " ", if select " " then
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