4 Transmitter
34
2. Transfer the reference analog value measured with the
multimeter into the P2A software (see 7.3.4.4. volume 2,
Adjusting the analog output) or enter it via the user menu (see
4.4.5.9. Editing Main Menu Adjust).
3. Disconnect connections between the multimeter and the
contacts of the testo 6383 and close the service cover.
4.3.2.11. n-point adjustment (pressure)
With an n-point adjustment, the parameters at the 3-6
measurement points are adjusted to the reference value. The
reference conditions are obtained by using a precise pressure
sensor that should be 5-times more accurate than the transmitter.
1 Positive pressure connection
2. Negative pressure connection
3. Pressure sensor
The number of measuring points is set to 3 by the factory
and can only be changed using the P2A software (see
7.3.4.3., n-point adjustment).
The n-
point adjustment must always be carried out to its full
extent and in good time at all selected measurement points.
✓ A precise pressure sensor (5-times more accurate than the
transmitter, e.g. DPC precision pressure sensor from testo
industrial services) is available.
1. Connect the positive output of the pressure sensor (3) to the
positive pressure connection of the transmitter (1) and the
negative output of the pressure sensor (3) to the negative
pressure connection of the transmitter (2).
2. Transfer the reference pressure value created with the pressure
sensor into the P2A software (see 7.3.4.3., volume 2, n-point
adjustment) or enter it via the user menu (see 4.4.5.9. Editing
Main Menu Adjust).
3. Repeat step 2 for all of the measuring points.
4. Disconnect connections between the pressure sensor and the
pressure connections of the testo 6383.
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