Product category:
Temperature measurement: IR techniques
News Release from: Melexis | Subject: MLX90614xAC
Edited by the Processingtalk Editorial
Team on 10 January 2008
Inexpensive IR sensor offers narrow
field of view
To expand on its proven family of intelligent infra-red, non contact thermometers, Melexis introduces the MLX90614xAC, with a narrow field of view of only 35 degrees
To expand on its proven family of intelligent infra-red, non contact thermometers, Melexis introduces the MLX90614xAC, with a narrow field of view Currently shipping versions of the MLX90614 non contact temperature sensor have a wide field of view of 90 degrees and are aimed at air conditioning and room heater applications
This article was originally published on Processingtalk on 14 Jan 2005 at 8.00am (UK)
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The MLX90614xAC now being introduced has a field of view of only 35 degrees.
Design engineers can now measure smaller objects or increase the sensor-object distance with this thermometer.
The 35 degree FOV was chosen as the minimal field of view achievable without the use of costly infrared optics, while still achieving the excellent accuracy specifications of the original MLX90614.
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MLX90614xAC description.
The 35 degree field of view of the MLX90614xAC is obtained by adding a viewing angle limiting metal tube to the standard TO-39 housing of the MLX90614.
By performing the calibration of the thermometer after this tube has been attached, the accuracy of the temperature measurement can be maintained.
Luc Buydens, Marketing Manager for infrared sensor products at Melexis, comments: "This new addition to our line of low cost, infrared thermometers builds further on the positive feedback we received after the introduction of our integrated infrared sensor, MLX90614.
The 35degree field of view of this new version of the infrared thermometer enables many new applications like microwave ovens, true non contact fever temperature measurement and industrial temperature control".
How it works.
The sensing element in the MLX90614 is a silicon chip with a thin, micro-machined membrane sensitive to the infrared radiation of a distant object.
A custom signal conditioning chip amplifies and digitises the signal from the membrane and calculates the object temperature using factory set calibration.
The digital output temperature is fully linearised and compensated for ambient temperature variations.
The MLX90614xAC applies advanced low noise amplifiers, a 17-bit ADC, and powerful DSP unit in its signal conditioning chip allowing a wide operating temperature range of -40C to 125C and an extended object temperature range of -70C to 380C while maintaining a temperature resolution of 0.02C.
The MLX90614xAC has a high absolute accuracy of +/-0.5C in the object temperature range of 0C to 50C and +/-1C outside that range.
The MLX90614xAC is qualified in accordance to AECQ100 and is ROHS compatible.
It can be soldered up to 260C according to JEDEC 020C.
Samples of the integrated thermometer are available now and production quantities can be ordered with a lead time of 8 weeks.
Pricing for the MLX90614xAC is 5.66 Euros at 1,000 pieces quantity.
More information can be found on the website.
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