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???high precision external ultrasonic liquid low and high level control -- 2 in 1,Website:http://www.smagall.com, non invasive ultrasonic explosion proof liquid level sensor, non invasive ultrasonic explosion proof tank level switch, non invasive ultrasonic explosion proof tank level control, non invasive ultrasonic explosion proof tank level controller, non invasive ultrasonic explosion proof tank level sensor?????????The External ultrasonic liquid low & high level control -- 2 in 1 has the same advantages as?it can monitor two levels --high and low simultaneously with only one transmitter. Therefore it saves cost. In addition, the device is stable and highly precise.??Your Benefits:1. External measurement to ensure maximum safety2. High precision and quick reaction 3. Very Safe to measure dangerous liquid( No opening or penetration of tank wall) ?????? applicable to virulent, highly corrosive or high pressure liquid and liquid in ?????? various complicated operating condition or explosive gas atmosphere. 4. Very easy to install ??????? When the switch is installed the tank can still be in use which means for ? ? ?? installation the tank need not be cleaned beforehand and welding or drilling ? ? ?? on the tank wall is not needed. 5. No need to calibrate regularly. 6. Reliable and stable performance. 7. No need to maintain. 8. Long working life9. Intelligent and electronic 10. Strong anti-interference capability Parameters:?Fields of Application: 1. Petrochemical Industry???? ?--Especially applied in the storage of dangerous liquid (Flammable, strong corrosive/alkali, volatile, toxic??????? liquid, high temperature/pressure) ?2. Food Industry Selection Guide:?? Explosion?proof?Mark:?Ex?d?II?CT6?Gb?