Duct PT1000 platinum thermal resistance price specifications 'online consultation'

Temperature of the temperature sensor selection methods

the temperature of the thermocouple is commonly used in temperature measuring thermocouple temperature sensor. Its main advantage is wide temperature range and adapt to the atmospheric environment, and strong, low price, no need power supply, is also cheap. Thermocouples are connected by a at one end of the two different metal wires ( Metal and metal B) , when the thermocouple end when heated, thermocouple circuit there is a potential difference. Available to measure the electric potential difference to calculate temperature. However, is a nonlinear relationship between voltage and temperature, the temperature due to voltage and temperature is nonlinear relationship, so need to reference temperature ( Tref) Make a second measurement, and use the test equipment (software or hardware processing voltage within an instrument - Temperature transformation, in order to obtain the thermocouple temperature ( Tx) 。 Agilent34970A and 34980 a data acquisition instrument have built-in measuring the computing power. In short, the temperature of the thermocouple is a simple and general temperature sensor, but the thermocouple is not suitable for the measurement and application of high precision.

the corresponding relationship between the resistance temperature sensor temperature

indoor and outdoor temperature of the air conditioning at home and abroad choose temperature sensor characteristic parameters for the following kinds: 25 ℃ when Ω Ω resistance is equal to about 5 k, 10 k, 15 k Ω, 23 k Ω. Special cases are: frequency conversion air conditioning compressor at temperature sensor in the ambient temperature of 30 ℃ temperature resistance at 400 k.

temperature temperature sensor temperature, the resistance and the single chip microcomputer cPu voltage corresponding changes as shown in table.

note: ( 1) Frequency conversion air conditioning compressor temperature sensor temperature: 80 ℃ = 50 k. 5 ( ) 4℃= 160 k ~ ( ) ℃= 250 k ~ 30℃= 400 kΩ,20℃= 600 kΩ,10℃= 1 mΩ。

( 2) Temperature temperature sensor input CPU voltage value less than zero when open. 5 v, short circuit when the input voltage is greater than 4 CPU. 95V。

temperature sensor temperature thermal resistance temperature measurement principle and material

temperature thermal resistance temperature sensor temperature measurement is based on the metal conductor resistance value increases with the increase of the temperature of the properties for temperature measurement. Temperature heat resistance temperature sensors are made of pure metal materials, the current application is more platinum and copper, in addition, now has started using survey, nickel, manganese and rhodium materials such as thermal resistance temperature sensor temperature.

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temperature temperature sensor installation requirements

temperature temperature sensors are connected by a temperature measuring probe, interface, integration of shell detonation, temperature measurement of the pipe, the probe length should be in the center of the pipe line, The protection tube insertion depth should be the half of pipe diameter) 。 In a measured medium velocity, should make the pipe line, and with the direction of the current body relatively. There are corners should be installed in the pipe bend. Commonly used specifications such as M20 * 1 link interface. 5, M27 * 2 thread or the flange connection