Tips And Assistance; Questions And Answers - TESTO 6681 Instruction Manual

144 4.1 Questions and answers

4

Tips and assistance

4.1 Questions and answers
Question
Connection to instrument cannot be
established
A message appears on the display
Malfunction (with or without display)
Undo adjustment
When does a stable current reading
appear?
If we could not answer your question, please contact your dealer or Testo
Customer Service. For contact data, see back of this document or web page
www.testo.com/service-contact
Possible causes/solutions
Check connection cable/plug contacts
See volume 1, chapter 1.5.
Analysis using the P2A software, see
chapter 3.3.3, Analyzing/testing the
transmitter.
A 1-point temperature/humidity adjustment
can be reset to the current reading using
[Set offset to zero].
The actual values before the adjustment
can be read out from the corresponding
history table.
2-point adjustments and analog
adjustments can only be undone by means
of a factory reset.
After approx. 20 seconds