testo 830-T4 Manual De Instrucciones página 11

7. Operation
7.1 Connecting probe
Connect temperature probe to probe socket. Observe +/-!
7.2 Switching on/off
Switch on instrument:
- All display segments light up briefly. The instrument changes to
the infrared mode (
15 seconds every time a button is activated.
Switch off instrument: Keep
The instrument switches off after 10min if no buttons are
activated.
7.3 Measuring
Please heed information on infrared measurement/contact
measurement.
The instrument is switched on.
Infrared measurement
1 Start measurement: Keep
2 Locate object to be measured using laser point: Laser marks
the upper and lower end of the measurement spot (at distance
to measurment object from 1,0 m; see chapter 11.3
measurement spot, distance).
- The current reading is shown (2 measurements per second)
3 End measurement: Release button.
- HOLD lights up. The last reading is retained until the next
measurement.
Contact measurement
Temperature probe is connected.
Position contact thermometer in/on the measurement object
and activate the measurement:
- The instrument changes to the contact measurement mode
( lights up). The current reading is shown.
Return to infrared meas. mode:
Setting the emissivity
Instrument is in the infrared measurement mode.
If no button is pressed for 3 s in the emissivity mode, the
instrument switches to the infrared measurement mode.
1 and simultaneously.
2 Set emissivity:
- The instrument switches to the infrared measurement mode.
or measurement button.
lights up). The display light remains for
pressed until display darkens.
or measurement button pressed.
.
or .
7. Operation 11
or measurement button.