TESTO 6681 Instruction Manual page 62

testo 6681 Ethernet
62
 Adjusting testo 6681 using adjustment keys
11.3 % RH
1.5 h
(salt pots)

The service flap of the testo 6681 is open.
1 Expose the humidity probe of the testo 6681 to the reference
condition of 11.3 % RH for at least 1.5 hours at 25 °C.
2 After this equalization period, press the 11.3 % adjustment key (4)
for at least 10 seconds with something like a ball-point pen that is
not too sharp. The LED (1) flashes when the adjustment process
begins. At the same time, the 2-point adjustment 11.3 % status
message appears on the display
- 1.3 Commissioning
The 2-point adjustment for the adjustment points 20 %RH and
80 %RH is carried out via the user menu.
75.3 % RH
1.5 h
or
75.3 % RH
11.3 % RH
1.5 h
1.5 h
(humidity generator)