Endress+Hauser OUSAF44, Руководство по эксплуатации

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Commissioning OUSAF44
22 Hauser
It is very important that you use the actual values of the optical Easycal filter. These values are
given in the calibration certificate supplied.
‣
Enter the absorbance values (CM44P): Menu / Setup / Inputs / Photometer / Extended
setup / Measurement channel / Calib. settings / EasyCal = Yes , NIST filter high and NIST
filter low .
Send Easycal in to your Service Center once a year for recertification. This comprises
complete functional testing and the recertification of the filters in accordance with
sources that are traceable to NIST.
7.2.3 Visual inspection
A reference rod is included in the delivery for every standard sensor (sensor without Easycal).
In this way, it is possible to perform a functional test on the device without having to use
calibration solutions.
The reference rod is screwed into the sensor detector housing, thereby partially blocking the
sensor light. This simulates the absorbance in the optical chain.
The cross-sectional view of the measuring detector below illustrates the position of the
reference rod and its blocking effect.
A0029964
 11 Cross-section of detector module with reference rod inserted
Proceed as follows to obtain a value for the reference rod during commissioning:
1. Fill the flow assembly with water. Make sure that the measured value "zero" is displayed.
2. Insert the reference rod into the detector housing.
 Make a note of the measured value.
You can check the calibration any time later on by filling the flow assembly with water again
and re-inserting the reference rod. The measured value should be equal to the value noted
down.