6. Adjustment on site
19
6. Adjustment on site
One point adjustment by inputting one reference
value
Using one point adjustment, you can enter a reference
value for a working point (e.g. -40°C tpd) specified by
you. In this way you will achieve a minimum
target/actual deviation from this working point.
A dew point mirror is ideal as a reference measuring
instrument.
The Adj menu in which the reference value is
entered is only available if one of the following units
is set: °Ctp, °Ftp, %rF, %Hr or %rh (See 5. Menu
guide, p. 16, Unit menu, Setting unit).
Reference value input
Optimum precision is achieved at reference value
-40 °C tpd. In case low dewpoints (<-25 °C tpd) are
relevant, it is suggested to avoid reference values
>-30 °C tpd (else loss of precision).
1 Expose reference measuring instrument and
testo 6740 to identical, constant conditions and
await adjustment time.
2 Measure reference value and compare with
testo 6740 reading.
3 If there are deviations in the values, enter reference
value in Adj menu.
Summary of Contents for 6740
Page 1: ...Instruction manual en testo 6740 ...
Page 28: ...0970 6740 en 08 en GB ...
