Detail:
I. overview
The integrated temperature transmitter (hereinafter referred to as the temperature transmitter) is composed of temperature sensor and signal transducer, and the signal converter is installed in the cold junction box of the temperature sensor, and the temperature sensor is directly converted into 4 ~ 20mA current output. Simple structure, easy installation, use, maintenance, is a new generation of temperature detection, control instrumentation, by the majority of designers and users. Has been widely used in petroleum, chemical, metallurgical, power plants, light industry and other departments, with regulators, recording instruments, computers and other supporting use, consisting of a variety of measurement and control system.
According to the temperature sensor, the temperature sensor is divided into two series of thermocouple and thermal resistance. In each series, according to the use of different occasions, it is divided into different type and ordinary type. According to the different output function, it is divided into the field and the display. Users can choose the appropriate specifications and models according to the requirements of the use of occasions and matching instruments.
The explosion-proof type temperature transmitter is tested by the national instrument and meter, which is used in explosive gas environment.
Two, the main characteristics
1 second line transfer. Signal converter power supply of the two wires at the same time also send output signal.
2 output constant current signal (4 ~ 20mA). Strong anti-interference ability, good transmission performance.
3 signal converter with epoxy resin package module, with anti vibration, corrosion resistance, moisture and other advantages, can be used for poor conditions.
4. Thermocouple MV signal through the signal converter is directly converted into 4 ~ 20mA current output, with the common cable transmission signal, eliminating the need for expensive compensating lead wires.
5 with the field of the temperature transmitter output 4 ~ 20mA of the current signal, and can be read at the temperature of the measured temperature, to bring great convenience to the operator.
Three, the main technical indicators
Power supply voltage: 13 ~ DC, 30V
Load resistance: 0 to 850
Output signal: 4 ~ 20mA
Basic error: 0.2%, 0.5%
Display mode: a liquid crystal display
Using ambient temperature: -20 ~ 70
Environmental temperature effect: 0.25%/10
Cold end compensation error: 0.5%/10
Explosion proof mark: D II BT4
Protection level: IP54
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