Digital Infrared Radiation Thermometers

Selection of the correct wavelength is necessary to make accurate measurements of different materials at different temperatures.

A quick summary of each instrument is given below, but if you need the full story, please request a copy of the product data sheet, either by phone 01767 692692, email or use the Contact us link, filling in the details as required. Thank you.



Chino Hand-Held Digital Radiation Thermometer The IR-AH series are non-contact handheld type digital radiation thermometers for the measurement of temperature. The thermometers feature a wide range from -50 to + 3000°C & internal memory.


Chino Hand-Held Radiation Thermometer The IR-H is available in three models; Single colour medium/high temperature: IR-HI Single colour high temperature: IR-HS Two colour + single colour wide temperature range

Heat conduction is generated by contact of a material to be measured and a material as a temperature sensor. Temperature measurement utilising heat conduction is a technique to work out temperature using change of characteristics which a material as a temperature sensor shows when the temperature of a material as a temperature sensor becomes the same as the temperature of a material to be measured.

In this method, for any characteristic of any object, if it has a law relation with temperature, it can be used as a temperature sensor. By the diverseness of this law, various types of temperature sensors (for example, thermocouples using the Seebeck effect, resistance thermometers using the resistance temperature coefficient of platinum, or germanium, glass thermometers using the coefficient of linear expansion of mercury, alcohol, etc, have been developed over time.

On the other hand, heat transfer (thermal radiation) is performed in the form of an electromagnetic wave from a material to be measured to a material as a temperature sensor and the temperature can be worked out by obtaining changes in the electromagnetic waves. This is temperature measurement using thermal radiation.

Thermal radiation are electromagnetic waves & cannot be seen by the eyes directly. For this reason, compared with thermometers utilising heat conduction, some uncertainty is accompanied by radiation thermometers.

The first point is emissivity. The thermal radiation is irradiated from most objects vary from an ideal state (blackbody) to a low value (mirror), & the varying degree is different with physical properties &/or surface states of measuring objects. If such varying degree is not obtained quantifiably, accurate temperature measurement is not possible. This is called "the problem of emissivity".

As long as radiation thermometers utilise thermal radiation, it is necessary to understand what the natural law of thermal radiation is & how its natural law is utilised in radiation thermometers.

From first concepts, thermal radiation is a kind of electromagnetic wave & the electromagnetic waves are transmission of vibration of electricity & magnetism in the form of a wave.

The electromagnetic wave differs in character by short and long wavelengths. The natural law of thermal radiation is strictly formularised by Planck's radiation law.

non contact temperature measurement: Chino Hand Held digital Infrared Radiation ThermometerS

A selection of Chino Infrared digital thermometers covering the range of -50°C ...to +3000°C in various model types including single/two colour (single and dual wavelength) to choose from, depending on the optical path between thermometer & object to be measured & also peak temperatures.