- SD-AY 420A level transmitters can be used to continuously measure the water level in pressurised steam and hot-water plants, or in condensate and feedwater tanks.
- The calibrated measuring range from 0 % to 100 % constitutes the linear profile of the 4-20 mA current output.
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SD-AY420 Level Transmitter operates according to the capacitance measurement principle. Proportional to the water level in water tanks and boilers, a standard analog signal for automation systems generate 4-20mA DC current. It provides a current of 4 mA for the set minimum level and 20 mA DC for the set maximum value. The level transmitter helps to indicate the level of the liquid in the tank or boiler both as a percentage and 4-20 mA analog signal.
There are 3 buttons which are and 2 red and 1 green LEDs on the device that are used for adjustment during commissioning.
SD-AY420 is not a stand-alone control system. However, the signals received from it will function if used properly.