HBDF mk2 instruction manual 15 EN
June - 2021 WWW.HBPRODUCTS.DK
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Smart analog
In this mode the sensor provides an analog signal 4-18 mA linear to the ice thickness until the ice thickness
is reached. Then the sensor has a constant output of 18 mA until the temperature reach the specified value
indicating that the defrosting is done. At this point the output is 19 mA for a period defined by a
parameter. When the time has passed the evaporator should be dry and free from ice
–
ready for a new
cycle.
Parameters used for controlling the output:
•
Filter time constant - averaging time in sec
•
Disable temp
–
above this temperature the output will be 4 mA, because the measurement is
invalid due to water.
•
Defrost start in % - defines the ice thickness when defrost should start.
•
Defrost stop temp °C - defines the temperature in °C at which the defrosting has ended.
•
Sensor delay in min - defines the time in minutes where the sensor is wet and output is 4 mA
