Installation - ProMinent DULCOTEST CDR 1-mA-2 ppm Betriebsanleitung

Installation

5 Installation
User qualification: trained qualified personnel or electrical technician, see
n
„Users' qualifications" on page 41
WARNING!
Connection to external units
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 interface requirements are automatically met when connecting to a ProMinent meas‐
uring/control unit.
CAUTION!
Incorrect metering
Possible consequence: Slight or minor injuries. Material damage.
– Do not switch off the measuring system during intermittent operation.
– Switch on the feeder assemblies 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.
50
Ä Chapter 1.2