1. Temperature sensor thermal resistance temperature measurement principle and material Temperature sensor thermal resistance temperature measurement is based on the characteristics of the metal conductor resistance increases with the increase of temperature for temperature measurement. Most of the temperature sensor thermal resistance is made of pure metal materials. At present, platinum and copper are the most widely used materials. In addition, temperature sensors have now been manufactured using materials such as dian, nickel, manganese, and tantalum. For example, Omega's PT100 temperature sensor includes a 100-ohm platinum resistance temperature probe.
2. Temperature sensor thermal resistance structure (1) proficient temperature sensor thermal resistance industrial temperature sensor thermal resistance temperature sensor (resistor body) from the temperature sensor thermal resistance temperature measurement principle shows that the measured temperature change is directly through the temperature sensor heat Resistance resistance changes are measured. Therefore, changes in various wire resistances, such as lead wires of the temperature sensor thermal resistance, affect temperature measurement. In order to eliminate the influence of lead resistance, three-wire or four-wire systems are generally used.
(2) Armored temperature sensor Thermistor armored temperature sensor Thermistor is a solid body composed of a temperature sensing element (resistor), lead wire, insulating material, and stainless steel bushing. Its outer diameter is generally φ2~φ8mm. The minimum can reach φmm.
Compared with common temperature sensor thermal resistance, it has the following advantages: 1 small size, no air gap inside, thermal inertia, small measurement lag; 2 good mechanical properties, vibration resistance, impact resistance; 3 can bend, easy to install 4 use long life.
(3) End face temperature sensor Thermal resistance end face temperature sensor The thermal resistance temperature sensing element is wound by a specially treated resistance wire, and it is closely attached to the end face of the thermometer. Compared with the general axial temperature sensor thermal resistance, it can more accurately and quickly reflect the actual temperature of the measured end face, and is suitable for measuring the end face temperature of the bearing bush and other components.
(4) Flameproof temperature sensor Thermistor flameproof type temperature sensor Thermistor is limited to the junction box by the special structure of the junction box, the explosion of the explosive gas mixture inside the shell due to sparks or arcs, etc. is limited to the production site. Will lead to an explosion. Flameproof temperature sensor thermal resistance can be used for temperature measurement in explosion-hazardous areas within the Bla~B3c class.
3. Temperature sensor Thermal resistance temperature measurement system components Temperature sensor Thermal resistance temperature measurement system is generally composed of temperature sensor thermal resistance, connecting wires and display instruments. Must pay attention to the following two points:
1 The temperature sensor thermal resistance and the index number of the display instrument must be the same. 2 In order to eliminate the influence of the change in the resistance of the connecting wire, a three-wire connection must be used.
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NOTE:
1. Please contact the corresponding product engineer for specific torque products.
2. Max. rotation speed: 50r/min
3. Max. circle rate: Clockwise180 °, 180 ° anti-clockwise for 1 cycle
4. Operating temperature: -10~50℃
5. Storage temperature:-30~60℃
Applied torque:(T)
Test Temperature:23+/-5℃
Rotating speed:20r/min
Durability test Method:Clockwise 180 °, 180 ° anti-clockwise
Rotating speed:20r/min
Test Frequency:1cycle/min
Test Temperature:23±5℃
Durability test cycle:10000 cycle
Test result criteria: Store in the room temperature for 24 hours or more after the test, recording to the torque T=T±30%T.
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