testo 835-T1 Manual De Instrucciones página 17

7.3 Changing the display
Various combinations of three measurement parameters in each case can be shown on
the display.
- The instrument is switched on.
Select the desired measurement parameter display with [
Parameters
T / T / T
IR max IR IR min
/ ΔT
T / T
TE IR (TE-IR)
%rF / T / T
IR td
%rF / T / T
Ambient td
T / T / T
Δtd(T
td max -T ) td min
IR td
a / a / a
w max w w min
7.4 Measuring
Observe information on IR measurement (chapter 12)/contact measurement (chapter
13).
- The instrument is switched on.
Performing a measurement
The measurement (IR and contact measurement) is started by pressing the trigger.
Remove orange protective cap from the lens.
1 Continual measurement disabled: hold down the trigger.
- SCAN is displayed.
or
Continual measurement enabled: press trigger.
- CONT is displayed.
2 Lock in on measurement object (IR) or position thermocouple (contact
measurement).
- When laser is enabled: the laser points mark the measuring range for IR
measurement.
3 Continual measurement disabled: release the trigger to end the measurement.
or
Continual measurement enabled: press the trigger again to end the measurement.
- HOLD is displayed.
- The measuring values are kept until the next measurement.
Commentsn
-
Only when a thermocouple is plugged in
testo 835-H1 only
testo 835-H1 only
testo 835-H1 only, TDtd(TIR -Ttd): temperature differential between surface temperature
and dew point)
testo 835-H1 only, aw: surface moisture, calculated from dew point of ambient air and
surface temperature. 0.00 to 0.64: non-critical / 0.65 to 0.80: potentially critical / 0.81 to
1.00: critical.
8. Settings
]:
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