Tips And Assistance; Accessories And Spare Parts; Questions And Answers - TESTO 622 Mode D'emploi

8 Tips and assistance

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Cleaning the instrument
> If the housing of the instrument is dirty, clean it with a damp
cloth.
Do not use any aggressive cleaning agents or solvents! Weak
household cleaning agents or soap suds can be used.
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8 Tips and assistance
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8.1 Accessories and spare parts

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Description
DKD humidity calibration certificate,
electronic hygrometer; calibration points
11.3 % RH and 75.3 % RH at 25 °C
ISO humidity calibration certificate, calibration
points 11.3 % RH and 75.3 % RH at 25 °C
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8.2 Questions and answers

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Question
Instrument displays
Instrument displays
Instrument displays
If we could not answer your question, please contact your dealer or
Testo Customer Service. For contact details see the rear side of
this document or the web page www.testo.com/service-contact
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38
Do not clean the instrument with compressed air, otherwise
the sensor may be damaged.
LO
HI
Possible causes
Below -20 °C
Above +70 °C
Battery life is approx. 1 month
Article no.
0520 0206
0520 0006