8 Tips and assistance
38
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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.
Do not clean the instrument with compressed air, otherwise
the sensor may be damaged.
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8 Tips and assistance
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8.1. Accessories and spare parts
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Description Article no.
Calibration and adjustment software incl.
USB cable
0554 6230
DKD humidity calibration certificate,
electronic hygrometer; calibration points
11.3 % RH and 75.3 % RH at 25 °C
0520 0206
ISO humidity calibration certificate, calibration
points 11.3 % RH and 75.3 % RH at 25 °C
0520 0006
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8.2. Questions and answers
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Question Possible causes
Instrument displays LO
Below -20 °C
Instrument displays HI
Above +70 °C
Instrument displays
Battery life is approx. 1 month
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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