Fig. f fig. e fig. d 4 – General Tools and Instruments CMM880 User Manual

Page 5

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Press and hold (td/WBT) button until
"td" appears on left side of display.
Unit will now display Dew Point Temp.
See Fig.E

Press "HOLD" button until (HLD)
appears in display.
The current reading is now being held
and will not change until Hold function
is cancelled. (See Fig.D)
Press "RST" button to cancel Hold
function. Hold function can be used
for temperature, Humidity, Dew-point
& Wet bulb.

Press and hold (td/WBT) button until
WB appears on left side of display.
Unit will now display Wet Bulb temp-
erature. Intermittent flashing of WB (
See Fig.F) indicates that current read-
ing is being calculated and updated
due to constant changes in humidity &
temperature in environment.

HLD

Fig. F

Fig. E

Fig. D

DATA HOLE FUNCTION

DEW POINT FUNCTION

WET BULB FUNCTION