Wear-resistant thermocouple parsing different categories and working principle of the application

What is a wear-resistant thermocouple?

temperature is defined as a measurement quantity: can be described as a liquid or gas force on the surface, it is usually based on force per unit area as the measuring unit. Thermocouple definition: thermocouple is a kind of measuring physical quantities and turning it into the signal of the device. Measured quantity can be temperature, length, force, or temperature, etc. Signal is usually for electrical signals, but also can be a light signal. Wear-resistant thermocouple definition: wear-resistant thermocouple is made up of temperature sensitive element instrument, applying to the thermocouple to determine the actual temperature ( The working principle of using different) And converts the temperature information to the output signal.

working principle of the thermocouple is wearable thermocouple can use a variety of different techniques to provide accurate results.

wear-resistant thermocouple based on strain using strain gauge as temperature sensitive components, usually is the metal foil strain gauge or to the cylindrical elastomer diaphragm. Strain of the principle of wear-resistant thermocouple biggest advantage is high rigidity, high temperature can be measured up to 15000 bar. Electrical connections usually by wheatstone bridge is completed, has a very high accuracy and consistent measurement results.

capacitive wear-resistant thermocouple temperature chamber and the diaphragm is used to produce the variable capacitance. When applying temperature, the deformation of diaphragm, capacitance decrease accordingly. By measuring the circuit can output and voltage into a certain relationship of electrical signals. The thermocouple is limited to about 40 bar of low pressure.

piezoresistive type wear-resistant thermocouple is composed of a main made of silicon diaphragm, applying the integration of the strain gauge is used to detect temperature and strain. Usually USES wheatstone bridge to reduce the sensitivity and increase output. Due to the use of materials, the temperature will be limited to 1000 bar.

and the technology is different, the resonant wear-resistant thermocouple used measuring mechanism of the change of the resonant frequencies measured by applying the temperature caused by stress. According to the design of the thermocouple, harmonic components can be exposed to the medium, the resonance frequency depends on the medium density. Usually these thermocouple is sensitive to impact and vibration.

don't use other other wear-resistant thermocouple to measure body are hot or ionization wear-resistant thermocouple, the use of density changes due to the flow of electrically charged particles in the applied to measure the temperature.

there are a variety of temperature measurement category feature can categorize wear-resistant thermocouple, including their measuring temperature range, operating temperature range or they measure the temperature of the type.

absolute wear-resistant thermocouple measurements relative to the reference room ( Close vacuum) The temperature.

gage pressure thermocouple or relative wear-resisting thermocouple was used to measure relative to the current temperature of the atmosphere temperature.

sealed pressure thermocouple gage pressure thermocouple is similar to the tables, but they measure temperature is relative to the fixed temperature rather than the current atmospheric temperature.

the differential thermocouple can determine the difference between the two temperature value, and can be used to measure the pressure drop and liquid level and flow rate, etc.

absolutely obvious advantage of wear-resistant thermocouple is always for the same reference temperature ( Vacuum) To measure, so is not affected by atmospheric temperature change, and not affected by temperature changes. Recommendation:

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