Changing The Display - testo 835 Manual De Instrucciones

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7.3 Changing the display

Various combinations of three measurement parameters in each case can be shown
on the display.
Symbols on the display:
IR sensor,
temperature difference
- The instrument is switched on.
Select the desired measurement parameter display with [
Display [unit]
Max | [°C/°F] | Min
| [°C/°F] |
[%RH] |
[%RH] |
Max | [°CDtd/°FDtd] | Min
Max | a [-] | Min
w
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.
TC probe, ambient humidity / ambient temperature probe,
Measurement parameters / comments
Max. IR temperature | IR temperature | Min. IR temperature
TC temperature | IR temperature | Temperature difference TC minus
IR View only available when thermocouple probe is plugged in.
[°C/°F] | [°Ctd/°Ftd]
[°C/°F] | [°Ctd/°Ftd]
Temperature difference IR minus dew point max. | current | min.
View only available in testo 835-H1.
Surface moisture max. | current | min. 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. View only
available in testo 835 - H1.
7. Operation
]:
Ambient humidity | IR
temperature | Ambient dew
point temperature View only
available in testo 835-H1.
Ambient humidity | Ambient
temperature | Ambient dew
point temperature View only
available in testo 835-H1.