Testo testo 922 Digital Thermometer -50 to +1000 ºC 0560 9221 用户手册

37

8.

Questions and
answers

This chapter gives answers to frequently asked questions.

is lit (bottom left

· Instrument battery is   

· Replace instrument

in display).

almost spent.

battery.

is lit (above

· Radio probe battery   

· Replace radio probe

symbol).

is almost spent.

battery.

Instrument switches 

·

Auto Off 

function

Switch function off. 

itself off.

is switched on.

· Residual capacity 

· Replace battery

of battery is too low.

Display:

-----

· Sensor is not plugged in. · Switch instrument off, 

connect probe and 

switch instrument

back on again.

· Sensor break.

· Please contact your 

dealer or Testo

Customer Service. 

Display: 

uuuu

· Permitted measuring range · Keep to permitted

was undershot.

measuring range.

Display: 

oooo

·

Permitted measuring range · Keep to permitted

was exceeded.

measuring range.

Display: 

no Signal

· Registered probe

· Switch on probe.

was not found.

· Bring probe into 

reception range.

· Register radio probe

again, see chapter

P

ERFORMING SETTINGS

,

objective

T

O REGISTER THE

RADIO PROBE

.

Date/time are

· Voltage supply was 

· Reset date and time.

no longer correct

interrupted for a longer time

If we are unable to answer your question, please contact
your dealer or Testo Customer Service. Contact details can
be found on the guarantee card or on the Internet under

www.testo.com

. 

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8. Questions and answers