182、temperature measurement of large liquid ammonia cryogenic liquid full volume tank - doer equipment
classification：forum publishtime：2021-08-14 15:36:11
temperature measurement of large liquid ammonia cryogenic liquid full volume tank
temperature measurement of large liquid ammonia cryogenic liquid full volume tank. temperature measurement facilities are set on the inner tank, tank wall and tank bottom of the full volume tank.
the tank wall and bottom are equipped with multi-point armored thermal resistance (the thermal resistance and extended shielded cable are integrated and encapsulated in stainless steel protective tube（ φ within 6mm), the protective tube is filled with mgo.
a set of average thermometer with multi-point temperature transmitter is set in the inner tank liquid. the multi-point temperature transmitter and average thermometer output modbus-rs485 signal to the dcs system in the control room for display, which can ensure accurate temperature measurement at different positions of the tank during start-up precooling and normal operation, and meet the production operation needs of uniform cooling precooling and flexible adjustment.
a temperature measuring point is set at the bottom of the insulation foundation of the inner tank to detect whether there is liquid leakage.
in addition, an armored thermal resistor is respectively set on the tank vent pipeline, and the rtd signal is output to the dcs system for display and alarm.
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