testo 845 Bedienungsanleitung Seite 43

Carrying o o ut m m easurements:
Scrolling through the measurement menus is possible with the measure-
ment trigger pressed down as well as in the Hold mode.
Hold m m ode
In the hold mode the last recorded measurement readings are frozen .
Continuous m m easurement s s witched o o ff
The instrument measures as long as the measurement trigger is pressed. The
instrument goes into Hold mode when the measurement trigger is released.
The Hold mode is exited as soon as the measurement trigger is pressed again.
The max. and min. values are reset.
Continuous m m easurement s s witched o o n
The measuring instrument measures without the use of the measurement trig-
ger. The Hold mode is activated by pressing the measurement trigger. The
instrument continues to measure as soon as the measurement trigger is pres-
sed again. The max. and min. values are reset.
1
IR m m easurement ( (
The instrument is switched on and is in measurement display. Max and
Min are activated.
IR measurement is an optical measurement.
Keep the lens clean.
Do not measure if the lens is fogged.
2
IR m m easurement a a nd T T C p p robes ( (
Measurement menu only active when TC probe is plugged in.
Select the desired option with
Setting degree of emission.
Instrument is in Hold mode.
Set degree of emission with
During setting,
The IR temperature value is updated with every alteration of the
emission value. The degree of emission of surfaces can thus
be determined.
)
/
/ .
and
must be held down.
) )
/ .
8. Measuring
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