Endress+Hauser Turbimax CUS52D, Руководство по эксплуатации

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Turbimax CUS52D Operation
Hauser 29
1. Select data record.
2. Set 3 different calibration points in the medium and specify the corresponding set
points.
A linear extrapolation is performed outside the calibrated operational range (gray
line).
The calibration curve must be monotonically increasing.
Calibration example for filter monitoring
Application example:
If a threshold is exceeded, the measured value is set to a maximum regardless of the actual
turbidity.
100 200 300 400 500 600 700 800 1000 900
FNU
200
400
600
800
1000
FNU
Factory calibration
Application calibration
A0030814-EN
 32 Example for filter monitoring
The following table shows the values in the example (→  32):
Measured value Target sample value
0 0
100 100
101 1000
1000 1001
Stability criterion
During calibration, the measured values provided by the sensor are checked to ensure they
are constant. The maximum deviations that may occur in measured values during a
calibration are defined in the stability criterion.
The specifications comprise the following:
• The maximum permitted deviation in temperature measurement
• The maximum permitted deviation in measured value as a %
• The minimum time frame in which these values must be maintained
The calibration resumes as soon as the stability criteria for signal values and temperature
have been reached. If these criteria are not met in the maximum time frame of 5 minutes,
no calibration is performed - a warning is issued.