Flame Detection Sensors

KEMET’s QFS pyroelectric flame sensors combine high sensitivity with fast response times and high dynamic range to ensure rapid and accurate detection of small and large flames, nearby or over larger distances. These high quality sensors, in their small SMD package, integrate a digital, current mode read-out offering high responsivity over the full frequency range of flame flicker from 3 – 30 Hz. Industry standard I²C communication enables plug-and-play connectivity to microcontrollers and allows easy tuning and calibration. Programmable gain and filtering offer maximum flexibility in system design, and various optical filter options are also available. These sensors can be connected together in a linear series for synchronized sampling across devices. Their long and maintenance-free operational lifetime and various low power modes make these sensors ideal for any smart or IoT type of application.

KEMET’s QFC pyroelectric flame sensors provide accurate discrimination of flame sources in triple IR flame detection systems, through their excellent signal to noise characteristic at the signature 8 – 10 Hz flicker range of a flame. The sensor element is built into a low noise circuit that has an internal CMOS op amp with a 10 GΩ feedback resistor outputting a voltage signal centered around half the supply rail. Exceptionally high responsivity, a wide field of view and rapid recovery from thermal and electrical shocks makes it the ideal solution for demanding flame detection applications.

KEMET’s QFCE pyroelectric flame sensors combine high sensitivity with fast response times and high dynamic range to ensure rapid and accurate detection of small and large flames, nearby or over larger distances.

These high-sensitivity flame detectors integrate digital front-end circuitry to provide all of the associated analog electronics required for sensing flame events. These events can then be interpolated by direct connection to a microcontroller. All of this occurs in an industry standard TO-39 package.

The thin film PZT substrate allows industry leading response times providing high responsivity over the full frequency of flame flicker from 3 to 30 Hz. The industry standard I²C communication interface not only provides plug-and-play connectivity to microcontrollers, but also allows easy tuning and calibration via programmable gain and filtering, offering maximum flexibility at system design level.

To allow for further in-depth testing of these flame sensing and detection solutions, KEMET is proposing 2 evaluation kits, a digital one and an analog one. The purpose of these kits is to enable engineers and technicians to carry out simple and effective evaluation of KEMET flame sensors, experiment with the sample flame detection ratio based algorithm, and to capture measured data to a PC through the KEMET Flame Sensing Evaluation Tool software.

Download the TO Flame Sensing Evaluation Kit USEQFCK9000000 User Guide.

Download the Software Package for the TO Flame Sensing Evaluation Tool (Digital).

Download the software package for the Sensor Evaluation Tool.

Download the TO Flame Sensing Evaluation Kit (Analog) USEQFCK4000000 User Guide.

Download the Software Package for the TO Flame Sensing Evaluation Tool.