Endress+Hauser nivotester FTC 422 Montage- Und Betriebsanleitung Seite 28

Calibration
Range seeking
Calibration for minimum fail-
safe mode
Calibration for maximum
fail-safe mode
Check calibration
28
For the upper switch point use:
• Adjuster 1 and hook switch 1
for the lower limit:
• Adjuster 2 and hook switch 3.
Step Procedure
1 Turn Adjuster anticlockwise to the stop: zero setting.
2 Select Range I at hook switch (Table 3.1).
3 Turn Adjuster clockwise through the full range and back:
- If the red LED lights and extinguishes, the correct range
is selected, now calibrate at minimum or maximum
fail-safe mode.
- If not proceed with Step 4
4 Select Range II at hook switch.
5 Turn Adjuster clockwise through the full range and back:
- If the red LED lights and extinguishes, the correct range
is selected, now calibrate at minimum or maximum
fail-safe mode.
- If not proceed with Step 6
6 Select Range III at hook switch, now calibrate at
mimimum or maximum failsafe mode.
If mimimum fail-safe mode has been selected, i.e. there is no
bridge between terminals 12 and 13 of the Nivotester, proceed as
follows.
Step Procedure
1 Turn the adjuster back to zero.
2 Slowly turn the adjuster clockwise until the red LED lights.
3 When the exact switch position has been found, turn the
adjuster no further.
If the maximum fail-safe mode has been selected, i.e. there is a
bridge between terminals 12 and 13 of the Nivotester, proceed as
follows.
Step Procedure
1 Turn the adjuster back to zero.
2 Slowly turn the adjuster clockwise until the red LED goes
out
3 When the exact switch position has been found, turn the
adjuster no further.
When adjusted, check that the unit is functioning correctly by filling
and emptying the vessel.
Nivotester FTC 422