4 Transmitter
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4.3.2.6. Adjusting the instrument
The testo adjusting concept allows the entire signal chain from the
sensor signal (probe) and the digital signal (within the transmitter)
through to the analog signal (transmitter output signal) to be
adjusted (see diagram).
Adjustment via
• testo 400/650
handheld instrument
with adjustment
adapter
• P2A software
• User menu
Adjustment 11.3 % RH/
75.3 % RH and 20 % RH/
80 % RH via
• User menu
• P2A software
Analog adjustment n-point adjustment
Adjustment using a
precise multimeter and
transmission of analog
reference value in
• User menu or
• P2A software
Adjustment using a
precise pressure sensor
and transmission of
analog reference value in
• User menu or
• P2A software
Either the 1-point adjustment or 2-point adjustment is suitable for
adjusting the sensor signal - digital signal chain.
The testo 6383 transmitter has digital probes whose adjustment
information is stored in the probes' internal memory. Both 1-point
and 2-point adjustments can thus be carried out on another
testo 6383 (e.g. in the calibration laboratory).