Thermocouple temperature sensor in the application of heat meter

As is known to all, thermocouple sensor is one of the important parts of heat meter, thermocouple sensors including temperature thermocouple sensors and flow. Now, our common heat meter using the thermocouple temperature sensor, are almost always USES the platinum thermal resistance, difference lies solely with the different types at home and abroad.

split type heat meter measuring accuracy

split type heat meter measuring accuracy is composed of three parts: the heat meter flow meter, thermocouple temperature sensor and joint decision integrator their measuring accuracy, the error limit is the above three parts of arithmetic and ( And also is the absolute value of) 。

A matching thermocouple temperature sensor calibration device's working principle is:

pairing will be inspection standard platinum resistance and thermocouple temperature sensor at the same constant temperature trough, at three temperature, the temperature of test temperature thermocouple sensors - Relationship between resistance and the calculate and determine the matching the accuracy of the thermocouple temperature sensor.

B integrator prover working principle is:

with a standard pulse signal generator and standard resistance box is checked integrator providing simulation flow and temperature signal, after a period of heat integrating, will provide the standard calibration device of heat value and the heat value of test integrator shows comparison, to determine the accuracy of the integrator.

C integrator thermocouple temperature sensor calibration device's working principle is:

2 by waterbath simulation heating pipe in water supply and return water temperature, using standard pulse signal generator provides the simulation flow, will be checked two standard platinum resistance thermometer and a calculator of the two thermocouple temperature sensor respectively in the two constant temperature in the sink, according to the heat energy table calculator shows the cumulative value of the heat and calculated from two standard temperature constant temperature trough the enthalpy difference compared with the standard product of flow of heat value, to determine the accuracy of the thermocouple temperature sensor and a calculator.

heat metering error of thermocouple temperature sensor measuring

heat meter is divided into integral and modular, for monolithic instrument, the error of thermocouple sensor to measure temperature, and integrator measurement at the same time, the temperature of the thermocouple sensor error and the error of the integrator additive is the result of the need to; And combined instrument, can the thermocouple temperature sensor measurement alone.

temperature thermocouple sensors measuring the specific method is alone, thermocouple sensor under constant temperature environment, the determination of thermocouple sensor under different temperature showed that the error between the temperature and accurate temperature. Need to know is, in addition to the error of measuring temperature thermocouple sensors alone, also check with part of the thermocouple sensor error, is the thermocouple sensor and integrator measurement at the same time, so you need according to different design principle of the integrator with the corresponding measurement method, two methods of measuring error of the measured combination can get the correct temperature thermocouple sensor error.

more high quality thermocouple sensor

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