6. Adjustment on site
20
Two-point adjustment for testo 6743
available from versioin June 2007 on. For older
versions an update of the firmware is necessary
(please adress Testo service)
2-pressure adjustment device (0554 3314)
Adjustment chamber
Switchover cock
Sintered filter
A two-point adjustment can be carried out with the
testo 6743 and the 2-pressure adjustment device (
).
The two-point adjustment serves to adjust the
testo 6743 to trace humidity. A reference instrument
or humidity generator is not necessary. Depending on
the position of the switchover cock (
) of the
2-pressure adjustment device (
), the sensor of the
testo 6743 is exposed to two different pressure levels.
In front of the switchover cock (
) of the
2-pressure adjustment device (
) is a sintered filter
(
) which prevents dirt particles, rust and oil from
entering the adjustment chamber (
).
The 2-pressure adjustment device (
) must be
under an absolute pressure of min. 3 bar and
max. 16 bar.
The calibration certificate of the 2-pressure
adjustment device is obligatorily required for the
pressure relationship P1/P2.
Summary of Contents for 6740
Page 1: ...Instruction manual en testo 6740 ...
Page 28: ...0970 6740 en 08 en GB ...
