Running-In Time; Calibration - ProMinent DULCOTEST PER 1-mA-50 ppm Operating Instructions Manual

Commissioning
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• The current signal should not exceed 20 mA!
Otherwise the current signal can drop, the sensor
can become damaged and this can cause dangerous over
metering in a control system!
In order to avoid this, install a monitoring system, which turns
off the remaining H
monitoring system should not be automatically reset.
• Avoid installations that can cause air bubbles in the sample
water! Air bubbles clinging to the sensor diaphragm can
cause the measured value to be too small and thus lead to
dangerous over metering in a control system!
• After commissioning, the sensor should always be stored in
a moist environment.
After successful installation, the measuring equipment can be acti-
vated. After that you need to wait for the designated running-in time
for the sensor.
8.1

Running-in time

In order to obtain a stable reading, the sensor requires the following
running-in times:
initial commissioning:
after changing the diaphragm:
re-commissioning:
If air between the gauze and the diaphragm was not expelled (see
section 6) then, naturally, running-in times will be longer!
8.2

Calibration

CAUTION
• You must perform a slope test after changing a diaphragm
cap or electrolyte.
• You should perform a slope test at regular intervals to
ensure flawless operation of the sensor.
• You should observe the relevant national regulations in
force for calibration intervals!
O control and triggers an alarm. The
2 2
approx. 2 – 6 hours
approx. 2 – 6 hour
approx. 1 – 3 hours
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