Thermocouple temperature sensor output 485 several ways of communication

Thermocouple temperature sensor is often used in all walks of life, but the traditional thermocouple temperature sensor are output or 4 - resistance 20ma，0- 5 v analog output, but with the popularity of computer, most of the time required to provide communications thermocouple temperature sensor, the temperature of the general requirement is 485 communication thermocouple sensor, the temperature of the thermocouple sensor output 485 what are two ways of communication?

the traditional analog output thermocouple temperature sensor is made of very good, in order to get before the 485 communications are generally contact with special communication instrument 485 signal to output, the advantage of this approach is to implement more convenient, simple operation, and the overall price is cheap, but the downside is an instrument must match, as space is large, the installation is not flexible, within the limited space to use more troublesome, and inconvenient integration.

with the development of the thermocouple sensor technology, now more and more manufacturers produce built-in 485 output of thermocouple temperature sensor, the thermocouple sensor can need not can be directly output 485 signals with the help of instrument, and some manufacturers can thermocouple sensors do is small, the minimum can do a few centimeters multiplied by the appearance of a few centimeters, this kind of thermocouple sensor is generally 5 line output, respectively is the power of plus or minus, signal plus or minus and ground.

the thermocouple sensor is very convenient to install, and easy to integration, the five core thread can be integrated the last dozens or even hundreds of thermocouple temperature sensor is connected to the 485 turn 232 interface, and finally cooperate with computer software, display and record the data on the computer, thus for further processing.

but the manufacturer of the thermocouple sensor can produce currently is not a lot, so the price is quite expensive, if you need to 485 the number of thermocouple temperature sensor output, less space there is no limit or recommended to meter output signal, 485 number, the limited installation space, used in production of high-end occasions can choose factory built in 485 output of thermocouple temperature sensor.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure thermocouple sensor, digital temperature thermocouple sensor