Feed / storage silo
Level measurement
Measurement of the level in the silo is needed to prevent overfilling the tank. A double system is being used with a radar transmitter mounted in the top of the tank and a pressure transmitter mounted on the side of the tank.
Both transmitters are 4…20 mA two-wire units. The transmitters have to be powered and the 4…20 mA signal converted to 0…10 VDC for connecting to an AI card on the PLC. A perfect solution with very high accuracy and fast response time is using two 6 mm slim line PR 3104 isolated converters.
Application:
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