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To fix the 4 mA point within this period
move the float to the desired position, and
press down key „4 mA” (2) for a short period of time (0.1 to 2 seconds).
The LED display will disappear for 5 seconds, with the current consumption of the FFG-T...EX
being 4 mA, and thereafter again 12 mA. The FFG-T...EX will remain in the adjusting mode for
another 15 seconds before changing back to the gauging mode.
To fix the 20 mA point within this period
advance the float to the desired position, and
press down key „20 mA” (3) for a short period of time (0.1 to 2 seconds).
The LED display will disappear for 5 seconds, with the current consumption of the FFG-T...EX
being 20 mA, and thereafter again 12 mA. The FFG-T...EX will remain in the adjusting mode for
another 15 seconds before changing back to the gauging mode.
The new adjustment will not be adopted by FFG-T..EX until it automatically changes
from the adjusting mode into the measuring mode (with LED disappearing). For this
reason, the FFG-T...EX system should not be cut off from the current supply before.
Current Consumption in the Error Mode
If the FFG-T...EX is due to a failure unable to determine a proper float position, i.e. a correct filling
level, it will change to an error mode after a short period of time. The current consumption of the
FFG-T...EX in the error mode has been adjusted, ex factory, to 21.5 mA although it can be
switched to 3.6 mA, also.
fig.6: adjustment of the Level Sensor FFG-T...EX
