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Connecting the External Components
6.6
Regeneration System for Demand-Controlled Regeneration
Triggering
Preparation plants are usually regenerated according to their capacity according to a constant
flow rate. To ensure that no hard water reaches the load, the regeneration takes place before
the actual exhaustion of the plant. If regeneration is triggered by an analyzer, regenerants and
water are saved. In the case of strongly fluctuating raw water hardness, a qualitative
regeneration triggering via an analyzer is unavoidable.
The pulse output for the regeneration triggering takes place via relay 1 / output 1. Due to
longer service life or due to excessive load, premature regeneration can be triggered by the
counter ion effect. It is therefore recommended to repeat the measurement if the limit value is
exceeded with a control measurement.
Programming: Menu > Settings> Analysis> Control measurement
6.7
Analogue Measuring Device
The present measured value is available as an analogue value at terminals 15 and 16. Recorders
or external devices can be connected to process the measured value. You can choose between
a current output 0 - 20 mA value or a 4 - 20 mA value. In addition, you must specify which
current value of 20 mA corresponds to which total hardness / carbonate hardness.
Programming: Menu> Settings > Outputs> Current loop type
Programming: Menu > Settings > Outputs > Current loop calibration
(Enter the total hardness / carbonate hardness value that should correspond with 20 mA.)
The supplied current of the current loop for the displayed measured value is calculated as:
Waltron User Manual 101-048-E.1
6051 Hardness Analyzer
35
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