infrared temperature sensor how it works

Non contact infrared temperature sensor for industrial - Renke

what is an infrared temperature sensor? The infrared temperature sensor can calculate the surface temperature of the object by measuring the intensity of the infrared radiation emitted by the target. Non-contact temperature measurement is the biggest advantage of infrared thermometers, allowing users to easily measure targets that are difficult to approach or move. We offer infrared temperature sensor RS485 and infrared temperature sensor 4 20ma two types.

PRICE RANGE: $83.87~$167.7


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.

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                               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.

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infrared temperature sensor accuracy and datasheets:

Supply voltage10-24V DC
Power consumption1.2W
Accuracy±1% or ±1.5℃
Circuit working temperature

Temp.: 0 ~60°C

Humidity:  10 – 95% (No condensation)

Test temperature range0-100°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 range8 ~ 14 µm
Optical resolution20:1
Respond time150 ms (95%)
Size113mm×Φ18mm(L*D)
Emissivity0.95(fixed)
Output4~20mA, RS485
Load capacity≤600Ω

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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:

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analog to RS485 converterusb to rs485 converternoise sensor
air velocity sensorpositioning water leak detectorair 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.

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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.

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