... quality assurance Full straight-through design 304 stainless steel Encrust-preventing Dual CPUAnti-lightning Low power consrmption ... interfaces)2,Ultrasonic transducer 10,Locking cover3,Stainless steel cover 11,Parameter labels4,Header casing 12,Photoelectrlc ... harsh field environments,the temperature sensorattachment adopted stainless steel flexible conduit,prevented damage(7)Circuit layout and PCB ...