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Note!
To carry out a highly accurate calibration, it is necessary to eliminate the
temperature influence which is due to the temperature difference from the
reference temperature, i.e. the calibration should be performed at the reference
temperature. If this is not possible, the calibration temperature or Tc value of the
calibration solution can be entered in the Commissioning / Calibration menu.
Note!
to assure accurate temperature registration, the temperature sensor should be
checked and calibrated before each calibration of the conductivity measurement
with the air of the Commissioning / Temperature menu.
Function Selection Default
Measuring cell selection (not for Measuring cell 1 Measuring
one-circuit) Measuring cell 2 cell 1
No selection Clean meas.
cell and place
in calibration
solution
Display of calibration solution, Tc,
temperature
Entry of calibration solution setpoint 0 µS/cm to 1000 mS/cm Current meas.
value
Display of cell constant x.xxx 1/cm
Calibration End cal. End cal.
Repeat cal.
Cal. channel 2 (difference only)
For End cal. selection
Return to measuring mode
For Repeat cal. selection
Calibration of measuring cell 1 Measuring
Return to measuring cell selection cell 1
(see above)
For Cal. channel 2 selection
Calibration of measuring cell 2 Measuring
Return to measuring cell selection cell 2
(see above)
9.1.4 Installation Factor (with Toroidal Sensors)
When installed in narrow pipes, the sensor may be influenced by the pipe wall, resulting
in inaccurate measurement. This effect may occur when the distance from the wall is
less than 0.6 in. (15 mm). It can be compensated for by entering an adaptation factor
(installation factor).
Input of Installation Factor
Function Selection Default
Measuring cell selection (not for Measuring cell 1 Measuring
one-circuit) Measuring cell 2 cell 1
Entry of adaptation factor 0.001 to 50.000 1.000
Note: The adaptation factor for the CLS 52 cell is 1 for pipes > DN 65
(all measuring cell versions).
For pipe diameter 1½ in. (DN 40), an adaptation factor of 0.990 is to be entered.
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