Amprobe TMA-21HW User Manual page 18

Auto Power Off Time Setting mode
• Push "SET" key four times to enter this mode, the "APO" symbol and the
current auto power off time are displayed.
• Push "" and "" keys to setting the desired auto power off time from
1 to 50 minutes or setting to "– – m" for disable this function. Push "↵"
key to store the setting.
• Push "SET" key several times until the " SET " symbol is disappeared to
exit the setting mode.
Backlighting Time Setting mode
• Push "SET" key five times to enter this mode, the "bL" symbol and the
current backlight time are displayed.
• Push "" and "" keys to setting the desired backlight time from 1 to
50 seconds or setting to "– – s" for disable this function. Push "↵" key to
store the setting.
• Push "SET" key several times until the " SET " symbol is disappeared to
exit the setting mode.
Barometric Pressure Setting mode
• Push "SET" key eight times to enter this mode, the " SET " and "mmHg"
or "inHg" symbols are displayed.
• Push , ,  and  keys to setting the actual barometric pressure value.
• Push "↵" key to store the value.
• Push "SET" key several times until the " SET " symbol is disappeared to
exit the setting mode.
The actual barometric pressure must be entered to convert air velocity
and volume measurements to actual conditions.
Calibration mode
• Push "SET" key six times to enter this mode, the "USEr CAL no" symbol is
displayed.
• Push "" and "" keys to select " " symbol is displayed.
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