4 Transmitter
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relatively narrow measuring range (working range), e.g. clean room
applications, air conditioning applications for storage and similar.
The 1-point adjustment can be performed
• via the user menu (see 4.4.5.9. Editing Main Menu Adjust,) or
• via the P2A software (see volume 2, 1-point adjustment,) or
• directly by means of a Testo handheld instrument
(testo 400/650) (see description of how to proceed below).
Please note that the 1-point adjustment is generally performed on
the basis of the % RH and °C/°F parameters.
Adjusting testo 6383 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 6383 via
the adjustment adapter (2) (connected to probe socket 1 of the
handheld instrument).
2. Expose the humidity probe (4) of the testo 6383 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. The 1-point adjustment is performed for both the
humidity and the temperature.
4. Disconnect the adjustment adapter (2) from the service
interface (5).
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