Testo 625 Thermo-Hygrometer 0563 6251 User Manual

5. Operation 27

²

Switching tthe iinstrument ooff:

i

Press and hold 

(for approx. 2s) until the display

goes out.

5.3 Switching the display

light on / off

²

Switching tthe ddisplay llight oon/off: 



The instrument is switched on.

i

Press .

5.4 Performing settings

To oopen cconfiguration m

mode: 



The instrument is switched on and is in measurement
view. Hold, Max or Min are not activated.

i

Press and hold 

(for approx. 2s) until the display

changes.
- The instrument is now in configuration mode.
You can change to the next function with 

. 

You can leave configuration mode at any time. To do
so, press and hold 

(for approx. 2s) until the

instrument has changed to measurement view. Any
changes that have already been made in configuration
mode will be saved. 

Carrying oout aa hhumidity ccalibration: 

A 2-point calibration of connected humidity probes can
be carried out (11.3%RH and 75.3%RH).



Configuration mode is opened, CAL is lit.

Select the desired option with 

/

and confirm

with :

· oFF: Humidity calibration is not carried out.
· on: Humidity calibration is carried out.

oFF

was selected:

º

Continue with objective 

T

O REGISTER THE RADIO PROBE

.

de

en

fr

es

it

pt

sv

nl

??

??