Dr. A. Kuntze Neon pR, Руководство пользователя

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18. Trouble-Shooting
Dr. A. Kuntze I Gutes Wasser mit System Robert-Bosch-Str. 7a
40668 Meerbusch
+49 (0) 2150-7066-0 / Fax -60
www.kuntze.com
89
Dosage check is a safety measure to shut down the controller in case of defective
feed lines to prevent leaks of hazardous chemicals.
The instrument monitors the time of dosing with 100% controller output
– if you are
using the instruments controller and have activated this function by setting the time to
a value >0. If within that time the controller output does not go below 100%, the
instrument shuts down the controller, stops the dosing, and displays this message.
So if you read this message on the display, you have to expect problems with the
feed lines, including the release of dangerous chemicals!
Warning The dosage check monitors only those times when the controller
is dosing with 100%! If your proportional range is higher than the
maximum possible difference between set point and measured
value, this condition can never be met!
Event message Cause Suggested remedies
Low flow
– no
dosing
The flow signal has
dropped below the
measuring range of the
flow meter
Check flow, check flow sensor
This message appears if you have activated the option Volume-based dosing, and
the flow has dropped below the measuring range of the flow sensor. Since control is
not possible under these conditions, dosing has been stopped.
Event message Cause Suggested remedies
Flow overrange
– no
dosing
The flow is higher than the
measuring range of the
flow sensor
Check flow, check flow sensor
This message appears if you have activated Volume-based dosing and the flow
exceeds the measuring range of the flow sensor. Since control is not possible under
these conditions, dosing has been stopped.