5
Installation
n
User qualification: trained qualified personnel or electrical technician,
WARNING!
Sensor connection on external equipment
Possible consequence: Fatal or very serious injuries
–
Ensure that the connected measuring/control device is galvanically isolated from the
sensor.
–
Do not allow the supply voltage to fall below 16 V DC, even for short periods of time.
–
Ensure that the current source can be loaded with a minimum of 35 mA at a min‐
imum of 16 V DC.
–
Too low a supply voltage may result in an incorrect measured value.
The requirements are automatically met when connecting the sensor to a ProMinent meas‐
uring/control unit.
CAUTION!
Incorrect metering
Possible consequence: Slight or minor injuries. Material damage.
–
Do not switch off the measuring/control unit during intermittent operation.
–
Switch on the feeder assemblies (e.g. pumps) with a time delay if necessary.
–
Ensure that the water to be measured always contains a sufficient quantity of the
appropriate feed chemical,
–
otherwise you will have to factor in longer run in periods.
Installation
60
