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Compact infrared thermometers ideal for spot measurement

Home Engineering Electrical Compact infrared thermometers ideal for spot measurement

INSTROTECH, local representative of Optris – manufacturers of non-contact temperature measurement devices – has launched CTratio, which it says offers many improvements and new features such as the low bottom temperature of 275 °C, a maximum ambient temperature of up to 315 °C without cooling, and a green sighting laser.

According to the company, a point measuring infrared thermometer should be used if users know where the critical point or the area to be measured is positioned within the application.

“The size of the measuring object is important to define which lens is necessary. It is therefore possible to monitor the accurate temperature and optimize processes – if necessary – before quality problems arise,” the company said in a statement.

It added that Infrared cameras should be used in cases where more than one critical area exists or the area cannot be clearly defined. Critical areas can be localized by the camera through the demonstration of thermal images. The areas can then be permanently monitored by one or multiple fixed infrared thermometers.

The condition of the object surface defines the measurement device and wavelength to be used for the application.

“The emissivity occupies a central position. The choice of the right device is of great importance especially for metals, where the emissivity depends on the temperature and wavelength. Optris is able to offer appropriate measurement devices for most applications throughout a wide product range”

The temperature is another factor to decide on. The range should cover all relevant temperatures of the application. The measurement range of the devices is between –50 °C and 3000 °C.

Short wavelengths reduce measurement errors on surfaces with low, unknown or changing emissivity. This occurs mostly with metals.

“To achieve accurate temperature measurements, it is important to know how fast measuring objects are moving in front of the sensor, or how fast they change temperature. Our fastest infrared thermometer captures changes within 1ms.”

According to the company, these temperature sensors can be installed as part of the process with mounting brackets or flanges. Depending on the device, Optris offers different analogue and digital interfaces for data evaluation such as triggering, alerting or saving of data.

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