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Summary of platinum thermal resistance
WZ series industrial platinum resistance is usually used with display instrument and computer facilities, direct measurement of various production process - 200 ~ + 500 ℃ within the scope of liquid, steam and gas medium, as well as the temperature of the solid surface.With platinum temperature-sensing component of thermal material, lead and protect the tube is made of a temperature detector, often with external measurement and control device and mechanical device connected components.Our company produces the heat resistance to all accord with IEC international standards and the relevant provisions of the state, there are two main categorises: platinum thermal resistance and copper resistance, and the platinum resistance points mica skeleton skeleton, ceramics, thick film resistance and film resistance, etc.Copper resistance of the frame are made of polycarbonate.For Pt100 platinum thermal resistance index, copper resistance index number for Cu50.
The working principle of the platinum thermal resistance
Platinum thermal resistance is the use of substances (generally as pure metal) resistance varies with temperature, and the characteristics of a certain functional relation made sensor for measuring temperature.When the temperature will change resistance as the electrical signal input to display instrument.By the transformation of the measurement circuit of instrument shows the change in temperature value and achieve the purpose of temperature measurement.
The basic structure of the platinic resistance
The appearance of various platinum thermal resistance is the same, but they are roughly the same basic structure, usually by heat element, insulating tube, protection tube, wiring board, and junction box and other major parts.
Platinum thermal resistance range of application
Platinum thermal resistance is suitable for the medical, electrical, industrial, temperature calculation, high precision temperature equipment such as satellite, weather resistance, calculation, application range is very wide.
Platinum resistance thermal resistor core specification table
Degree, | Size (mm) | Using the temperature range | precision | The test current | Lead materials | use | ||
B | A | Super grade A | ||||||
Pt100 | Phi 2.2 x 8 | - 200 ℃ ~ 450 ℃ | V | V | 1mA | 0.4 silver phi | General industrial use | |
Pt25 | Φ 2.5 x 10 | - 200 ℃ ~ 800 ℃ | V | V | V | 1mA | Phi 0.4 platinum wire | Used in the measurement products and calibration, the stability of high instead of thermocouple |
Pt1000 | 2 x 10 x 1 | - 50 ℃ ~ 300 ℃ | A | 0.5mA | German for general industrial use | |||
Pt20 | Phi 1.6 x 12 | 200 ℃ or less | 200mA | Phi 0.20 platinum wire | Used for gas flow sensor and the testing instruments | |||
Pt20 | Phi is 2.4 * 22 | 200 ℃ or less | 300mA | Phi 0.4 platinum wire | Used for gas flow sensor | |||
Pt20 | Phi is 2.8 * 22 | 200 ℃ or less | 300mA | Phi 0.4 platinum wire | Used for gas flow sensor | |||
Pt20 | Phi is 3.1 * 22 | 500 ℃ or less | 400mA | Phi 0.4 platinum wire | Used for high temperature gas flow sensor | |||
*Pt20 | Phi x 2.0 0.55 | 100mA | Phi 0.15 silver platinum alloy | Used in automobile air flow meter, teaching instrument such as anemometer, response speed about 10 ms | ||||
