Mine intrinsically safe infrared temperature sensor with 4-20mA output

• Main Authors: NI LI, LIU XIAOMING, ZHANG HAO, WANG YANPU
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2017
• Subjects: COLORIMETRY; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; TESTING

A mine intrinsically safe infrared temperature sensor with 4-20mA output mainly comprises a base, a front cover, a control circuit board, a temperature sensing component and a remote host. The inner side wall of the base is fixedly connected with the control circuit board, and the bottom of the base is connected to a horn mouth and the temperature sensing component in sequence; the control circuit board mainly comprises a signal receiving transmitter, a single-chip microcomputer, a digital-to-analogue converter, a 4-20mA conversion circuit and a relay; the temperature sensing component comprises a thermal sensor, an outlet nozzle and a sheath wire in sequence; a digital tube display screen, a buzzer and a test button are arranged on the front cover, the digital tube display screen is connected with the single-chip microcomputer, the buzzer and the relay are connected, and the 4-20mA conversion circuit is also connected with the remote host. The sensor structure design is scientific and reasonable, the reactio