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An economical, low-cost infrared temperature sensor. Unaffected by pollution, moisture and electromagnetic interference.
Has been applied to textiles in light industry, papermaking, packaging, ceramics, rubber, plastics, rollers, temperature measurement of motor bearings, electrical equipment: cable joints, control cabinets, transformers and switchboards. error monitoring etc.; Automobile testing and microwave ovens, heating, ventilation and air conditioning, food processing and other industries
Principle
Folding infrared rays
Infrared is a type of light that is invisible to the human eye but is actually an objectively existing substance like any other light. As long as an object has a temperature above thermodynamic zero, it radiates infrared rays into the environment.
Infrared rays are rays other than red light in visible lightht and are therefore called infrared rays. Its wavelength range is approximately in the spectral range from 0.75 to 100 μm.
Folding infrared radiation
The physical nature of infrared radiation is thermal radiation. The higher the temperature of the object, the more infrared rays it emits and the er the infrared radiation energy.
The study found that the thermal effect of various monochromatic lights in the solar spectrum gradually increases from violet light to red light, and the thermal effect occurs in the frequency range of infrared radiation, that is, infrared radiation is also called thermal radiation or called heat rays.
Features
4-20 mA output, economical, compact two-wire system
Measurement of temperature 20- 100°C 0-300°C 0-500°C
Distance factor 20:1
Robust hermetic IP65 stainless steel housing
Optional mounting bracket, laser targetand air blowing device
Detailed technical parameters
Measuring range: -20 °C~ 100°C ,0°C~ 250°C,0°C ~ 500°C
Distance factor: 20:1,30:1
Output signal: 4-20 mA signal
Accuracy: ±1% of reading or ±1°C
Emissivity: 0.95
Repeatability: ±0.5 % of reading or ±0.5 °C
Response time: 50 mS
Spectrum range: 8-14 µm
Power supply: 24 VDC
Probe size: 113 (length) x 18 (front diameter) mm
Weight: 95 grams, including 1.5 m cable
Packaging: Hermetic stainless steel packaging.
Protection class: IP65
Folding sensor principle
The thermal sensor uses the radiant heat effect to increase the temperature of the detection device after receiving radiant energy and then increase a part of the sensor. The performance of the beam varies with temperature.
Radiation kcan be recognized by detecting a change in one of these properties. In most cases, the radiation is captured by the Seebeck effect. When the device receives the radiation, a non-electrical physical change is caused, and it can also be measured by converting it to an electrical quantity through a corresponding change.
The thermal sensor uses the radiant heat effect to cause the temperature of the detection device to rise after receiving radiant energy, changing the output of the column and the temperature inside the sensor. By detecting a change in any of these properties, radiation can be detected.
