TESTO 835-H1 Short Instructions

Element Function
1 Infrared lens IR measurement
2 4-point laser Measuring spot marking
3 Humidity probe (only H1) Measures the relative humidity
- Switches the instrument on.
4 Trigger
- Starts / ends a measurement.
5 Battery compartment Contains 3x AA batteries.
- For connecting the instrument to the PC to
6 USB interface / probe
connection socket connect to the EasyClimate software.
- Connection of a probe.
- Joystick for confirming a selection.
7
- For navigating in the menu
8 ESC Takes the user a step back in the menu selection.
9 Switches the testo 835 on or off.
10 Saves the measured readings.
11 Setting emissivity
- Scan: while the trigger is held down and the
12 HOLD / SCAN
measurement is carried out.
- Hold: displays the measured values.
13 Time Displays the current time.
14 Reading display Displays the measured readings.
Surface temperature (IR)
Max
Max. IR temperature
IR temperature
[°C/°F]
Min Min. IR temperature
Differential (surface temperature - external probe
temperature)
TC temperature
[°C/°F]
IR temperature
Temperature difference TC / IR measurement
TC probe must be connected.
Humidity measurement (environment + dewpoint +
IR) (only H1)
[%RH]
Ambient humidity
[°C/°F]
IR temperature
[°Ctd/°Ftd])
Ambient dewpoint temperature
Element Function
Humidity measurement (environment and
dewpoint) – ambient temperature (only H1)
[%RH] Ambient humidity
[°C/°F] Ambient temperature
Ambient dewpoint temperature.
[°Ctd/°Ftd])
Dewpoint distance measurement (only H1)
Max Temperature difference IR minus dewpoint max
current
[°CDtd/°FDtd]
Min min.
Surface moisture measurement (only H1)
Max Surface moisture max.
aw[-] current
Min min.
Calculated from dewpoint, ambient air and
surface temperature
- 0.00 - 0.64: non-critical
- 0.65 - 0.80: poss. critical
- 0.81 - 1.00: critical
15 Displays the battery charge status.
16 Displayed if alarm is switched on.
17 Displays the selected emissivity.
18 Displayed if laser is switched on.
Connecting the thermocouple probe
- Connect the connecting plug to the probe socket (6).
1
Switching the instrument on
1
- Press
(9).
- OR
- Press
Trigger (4).
Switching the instrument off
1
- Hold down
(9) until the display goes off.
If no button is pressed for 2 minutes, the instrument switches off
automatically.
1 2