infrared temperature sensor how it works
Non contact infrared temperature sensor for industrial - Renke
non contact infrared temperature sensor description:
The RS-WD-HW-* temperature sensor is an integrated infrared temperature sensor. The sensor, optical system, and electronic circuit are integrated into a stainless steel housing. Easy to install, the standard thread on the stainless steel shell can be quickly connected to the installation site. At the same time, there are various options (various instruments, large screens, paperless recorder purge protective covers, laser sights, adjustable mounting brackets, etc.) to meet the requirements of various working conditions. RS-WD-HW-* non-contact infrared temperature sensor is an industrial infrared temperature sensor. This infrared temperature sensor range is -50℃~1200℃ for optional.
infrared temperature sensor review
Advantages of IR Temperature Sensors:
IR sensors read moving objects. Contact-based temperature sensors do not work well on moving objects. Infrared temperature sensors are ideally suited for measuring the temperatures of tires, brakes, and similar devices.
IR sensors don’t wear. No contact means no friction. Infrared sensors experience no wear and tear and consequently have longer operating lives.
IR sensors can provide more detail. An IR sensor can provide greater detail during a measurement than contact devices, simply by pointing it at different spots on the object being read.
IR sensors can be used to detect motion by measuring fluctuations in temperature in the field of view.
The IR sensor can directly display the value with a digital display, that is, the infrared temperature sensor with display.
infrared temperature sensor accuracy and datasheets:
| Supply voltage | 10-24V DC |
| Power consumption | 1.2W |
| Accuracy | ±1% or ±1.5℃ |
| Circuit working temperature | Temp.: 0 ~60°C Humidity: 10 – 95% (No condensation) |
| Test temperature range | 0-100°C, 0-150°C, 0-200°C, 0-300°C, 0-400°C, 0-500°C, 0-600°C, 0-700°C, 0- 800°C, 0-900°C, 0-1000°C, 0-1200°C, -50-300°C, -50-600°C |
| Spectral range | 8 ~ 14 µm |
| Optical resolution | 20:1 |
| Respond time | 150 ms (95%) |
| Size | 113mm×Φ18mm(L*D) |
| Emissivity | 0.95(fixed) |
| Output | 4~20mA, RS485 |
| Load capacity | ≤600Ω |
infrared temperature sensor non contact application:
1. Electrical equipment, medical field
2.Food Construction Industry, Chemicals, and Chemical Industry
3. temperature monitoring in process and production field
4. Metallurgy, petrochemicals, electric power, light industry, textile industry, food industry, National defense, and scientific research
Other industrial sensors:
| infrared pir motion sensor | water leakage sensor | smoke detector |
| analog to RS485 converter | usb to rs485 converter | noise sensor |
| air velocity sensor | positioning water leak detector | air quality monitor |
how does infrared temperature sensor work?
infrared temperature sensor working principle: Any object radiates infrared energy and the radiation intensity changes with temperature. Infrared temp sensors use infrared radiation energy with a wavelength in the range of 8μm-14μm. The infrared temperature sensor is a kind of optoelectronic sensor, which receives infrared radiation and converts it into an electrical signal, and displays or outputs temperature through electronic circuit amplifier, linearization, and signal processing.
Measuring distance of infrared temperature sensor
The size of the measured target and the optical characteristics of the IR sensor determines the maximum distance between the measured target and the measuring head. In order to avoid measurement errors, the measured target should be as full as possible in the field of view of the probe. Therefore, the measured point should always be kept smaller than the measured object or at least the same size as the measured target.
Lens cleaning
The lens of the instrument must be kept clean to avoid measurement errors or even damage to the lens due to dust, smoke, and other contaminants. If the lens is dusty, wipe it with lens cleaning paper dipped in absolute alcohol.
Electromagnetic interference
In order to prevent electromagnetic interference, please try to keep the infrared temperature sensor away from electromagnetic field sources (such as electric motors, motors, high-power cables, etc.) during installation, and metal sleeves can be added if necessary.
infrared temperature sensor 4-20ma wiring mode
For 4-20mA analog signal output. It is a two-wire loop current output mode, and its connection with a display or controller has the following two typical applications (connection method):
infrared temperature sensor calculation method
Range 0-600 degrees Celsius, 4-20mA output, when the output signal is 12mA, calculate the current temperature value. The span of this temperature range is 600 degrees, expressed by a 16mA current signal, 600 degrees/16mA=37.5 degrees/mA, that is, a current of 1mA represents a temperature change of 37.5 degrees, and the measured value is 12mA-4mA=8mA. 8mA*37.5 degrees/mA=300 degrees. 300+(0)=300 degrees, the current temperature is 300 degrees.
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