56
testo 6651 Ethernet
-
1.3 Commissioning
Adjusting testo 6651 using Testo handheld instrument
The service flap is open, a testo 400/650 handheld instrument with a
precision humidity probe is ready.
1 Connect Testo handheld instrument 400/650 (1) with connected
humidity reference probe (3) (order no. reference set 0699 3656/20) to
the service interface (5) of the testo 6651 via the adjustment adapter
(2) (connected to the probe socket 1 of the handheld instrument).
2 Expose the humidity probe
(4)
of the testo 6651 and the reference
probe
(3)
to the same reference conditions (e.g. in the humidity
generator) and allow climatic conditions to equalize.
3 Switch on the testo 400/650. The two-part display of the handheld
instrument will show the values of the transmitter on the left, and the
values of the reference probe on the right. The humidity and
temperature values are adjusted to the reference probe using the
Probe > Probe Adjustment
menu item on the testo 400/650.
4 The 1-point adjustment is performed for both the humidity and the
temperature.
5 Disconnect the adapter
(2)
from the service interface
(5)
.
1
2
3
4
5
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