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in between, and keep it activated. (If calibration
pushbutton is not activated within 10 seconds, it
will automatically leave calibration mode and
return to normal operation)
4. Observe the output mA signal decreasing fast
starting at 20 mA.
5. Release the calibration pushbutton when the
output signal is approx. 0.5 mA from the desired
point.
Reset to factory setting
The HBLT can always be reset to factory default setting regardless of any revised calibration values.
1. Press the calibration pushbutton and keep it activated in min. 20 seconds, until green LED starts flashing.
2. Release the calibration pushbutton.
3. When LED starts flashing, reset to factory setting is completed.
At factory calibration the transmitter will return to ammonia as default.
LED indication
When voltage is applied the LED will flash rapidly as many times as it has been calibrated through its
lifetime. The current mA output is activated as soon as the flashing sequence has changed from rapid to
slowly flashing.
Normal operation:
At normal operation the Green LED will be
flashing slowly.
Generally the Green LED is ON every time
calibration pushbutton is activated.
Calibration mode:
In calibration mode (Press the calibration
pushbutton and keep it activated in approx. 5
seconds) the Green LED is OFF.
Instruction manual HBLT - A1 - Liquid level Transmitter (HBLT-A1-008-UK)
WE INCREASE
UPTIME
AND
EFFICIENCY
IN THE REFRIGERATION INDUSTRY
6. All the next activations will decrease the
output signal by approx. 0.05 mA
7. Approx. 10 seconds after the latest activation
the LED starts flashing
8. Output now corresponds to the value
measured at the latest activation.
Change of refrigerant:
In refrigeration mode setting (Push the
calibration pushbutton and keep it pressed while
24 V is connected and then release the
pushbutton) the green LED is OFF until the
pushbutton is released.
After this the green LED will flash according to
the type of refrigerant.
When the refrigerant has been selected, the
green LED is constantly ON.
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