Calibration with a covered probe
This calibration is possible with a fully insulated probe or isolating
product only.
•
Cover the probe to the required switch point.
Capacitance range seeking
Find the operational range by proceding as described in
»Capacitance range seeking« on Page 32.
Calibration for minimum
fail-safe mode
If there is no bridge between terminals 12 and 13 of the Nivotester.
Step Procedure
1
Turn the adjuster switch back to zero.
2
Slowly turn the switch clockwise until the red LED lights.
3
When the exact switching position has been found, turn
the adjuster back a half-division.
4
When adjusted, check that the unit is functioning correctly
by filling or emptying the vessel.
Procedure:
Calibration for minimum
fail-safe mode with covered
probe
Calibration for maximum
fail-safe mode
If there is a bridge between terminals 12 and 13 of the Nivotester.
Step Procedure
1
Turn the adjuster switch back to zero.
2
Slowly turn the switch clockwise until the red LED goes out.
3
When the exact switch position has been found, turn the
adjuster back a half-division.
4
When adjusted, check that the unit is functioning correctly
by filling or emptying the vessel.
Procedure:
Calibration for maximum
fail-safe mode with covered
probe
Calibration with a variable level
If it is possible to vary the level, you can also calibrate as follows:
Step Procedure
1
Find the capacitance range as described on Page 32
2
Find the exact switch point with the probe uncovered as
described on Page 32.
- Note the value of the adjuster.
3
Find the exact switch point with the probe covered as
described on Page 33 above.
- Note the value.
4
Set the adjuster to the average of the two values.
5
When adjusted, check that the unit is functioning correctly
by filling or emptying the vessel..
Procedure:
Calibration with a variable level
Calibration
33