Established Flame Sensors Enhance Performance

Pyreos has enhanced performance of its TO-39 packaged flame sensors with the introduction of the ezPyro TO Flame Sensor that will now address wider applications in industrial settings than analogue equivalents in the same package. The ezPyro TO Flame Sensor has a greater field of view than an equivalent digital sensor offered in a surface-mount package, enabling it to sense larger areas. Typical applications include OEM equipment for flame detection in large spaces, such as warehouses, production plants and offices. Outdoor applications include monitoring oil rigs, forestry and other areas in which rapid flame detection is important.


The sensor couples the company’s thin-film PZT pyroelectric sensors with integrated readout circuitry and an I2C digital communications bus. This digital version has a higher signal to noise ratio than its analogue TO-packaged equivalent, which enables it to achieve a sensing range of approximately 85m compared to 60m for the analogue version.

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The sensor works in current mode, rather than voltage mode, which enables better accuracy across the full flame-flicker frequency range of 3 to 30 Hz. The I2C bus simplifies the process of connecting the ezPyro TO Flame Sensor to microcontrollers, and enables designers to configure the sensor’s gain, filtering, sampling rate and power modes digitally.


The ezPyro TO Flame Sensor is available with three band-pass filter options centered at 3.91 μm, 4.48 μm or 4.55 μm, or a high-pass filter that blocks signals at wavelengths of less than 5.0μm. An evaluation kit – dPYEFL02 - with PC software that enables sensor configuration, signal visualization and capture to file is available. For more information, visit Pyreos and email [email protected].

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