Calibrating - ProMinent DULCOMARIN 3 Compact Assembly And Operating Instructions Manual

Calibrating

11 Calibrating
84
User qualification: trained user,
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tion' on page 10
Every measured variable, active in a control circuit, can and must
be calibrated. Every calibration process is logged by the device.
You are guided by the device, context-sensitively through the
menu, to calibrate the respective measured variable. The device
assists you in this process by providing text and video information.
The following fundamental parameters always have to be consid‐
ered during calibration:
The operator is responsible for the correct condition of all devices,
parameters etc. needed for calibration. This means for example:
Always use the calibration process prescribed by law or
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standard for your system.
Make sure that the sensors are in a usable state, referring in
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this context to the operating instructions for the respective
sensor.
The buffer used for pH or ORP calibration may not be stored
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beyond their best-before date and do not use cooled buffers for
calibration.
Make sure that the respective reference measuring device has
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sufficient measuring accuracy and that maintenance carried
out on it is logged.
Do not store the tablets or reagents needed for the DPD
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method beyond their best-before date.
There should be a sufficient volume (l/h) of sample water
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flowing through the bypass fitting.
There should be no gas bubbles on the respective sensor.
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The temperature of the sample water should be within the sen‐
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sor's permitted temperature range, referring in this context to
the operating instructions for the respective sensor.
The pH-range of the sample water must be within the sensor's
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permitted pH-range, referring in this context to the operating
instructions for the respective sensor.
The controller should be operating in normal mode, not in
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superchlorination or Eco!Mode
If water samples are taken for calibration, these water samples
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need to be processed immediately. A delay will distort the
values.
Repeat the process if calibration is unsuccessful.
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If calibration is repeatedly unsuccessful, check all components
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of the control circuit using the respective component operating
instructions. Contact Service should you still be unable to iso‐
late the error and calibration still fails. The system then con‐
tinues to operate with the last calibration recognised as valid.
Ä Chapter 1.5 'User qualifica‐
.
®