4
2)
Key
- Press to turn on the meter without
IR value displayed.
- Press at least 2 seconds to turn off
the meter
- While the meter is on, press again to
enter auto-off time setting and emissivity
setting.
3)
Key
- Press to turn on the back light.
- Press again to turn off the back light.
4)
Key
- Press to select the operation mode
from air temp., dew point to web bulb.
- Press for 2 seconds to show T1-dew
point. (T1=surface temp.)
5)
Key
- Press to change temp. unit
- Press for up when setting the auto-
off time and emissivity.
- Press
and
at the same time
to disable auto power off function.
6)
Key
- Press
and
at the same
time to inactivate laser targeting
function or activate targeting function.
- Press for down while setting the
auto-off time and emissivity.
Summary of Contents for 8857
Page 1: ...Laser Infrared Hygro Thermometer User s manual ENGLISH...
Page 16: ......
