1 Features
- High Transmission: The Flame Detector Filter is designed to allow for high transmission across specific wavelength ranges, ensuring accurate detection of flames or fire.
- Sharp Slope: Features a sharp slope that helps in detecting the exact boundaries of flame wavelengths, improving the filter’s performance in fire detection.
- Wide Application Range: Suitable for industrial heating, drying systems, and gas turbines, making it versatile across various industries.
- Durable Construction: Made with high-quality materials, the filter is durable and reliable, even under harsh industrial conditions.
- Customized Solutions: Available in various cut-on wavelengths and transmission bands, and customizable based on application needs.
- General Description
Shape Optics Technologies Pte Ltd (SOT) presents the Flame Detector Filter, designed specifically for use in systems that detect flames or fire. This filter is widely used in industrial heating systems, drying systems, gas turbines, and other applications that require accurate flame detection.
The filter operates by allowing the transmission of light from a flame or fire within a specific wavelength range while blocking unwanted wavelengths outside of this range. The high transmission characteristics ensure that the flame signal is accurately detected, while the sharp slope provides precision in the wavelength boundaries for flame detection.
SOT’s Flame Detector Filter is optimized for use in various industrial applications, such as gas-fueled cookers, industrial heating systems, domestic heating systems, and industrial gas turbines. It is available in multiple cut-on wavelengths, including 3.2 µm, 5.5 µm, and 7.3 µm, with transmission bands in the range of 3.48–3.55 µm, 6.3–14 µm, and 7.8–11 µm, respectively. These filters offer outstanding reliability and durability, providing high performance in real-time flame detection systems.
- Spectrum Transmission Curves
If standard components do not meet your specific requirements, SOT offers customized solutions. Upon request, we can provide flame detector filters tailored to match your specific cut-on wavelength and transmission range needs.
- Coating Quality
- Adhesion Test: The filter coatings adhere to MIL-C-675C military standards. During testing, tape meeting LT-90 specifications was applied to the lens film layer. After three vertical removals, no blistering or peeling was observed.
- Temperature Test: In accordance with MIL-C-675C specifications, the filter was subjected to temperatures of -62±1°C and 71±1°C. After being returned to room temperature (16°C-32°C) for two hours, the adhesion test showed no film detachment.
- Abrasion Resistance Test: The filter passed the abrasion resistance test in line with MIL-C-675C and CCC-C-440 standards. A gauze tester applied a minimum force of 1.0 lbs (0.45 kg) for 25 cycles, ensuring no damage to the film surface.
- Humidity Test: The test was conducted under MIL-C-675C criteria, placing the filter in a controlled temperature and humidity chamber at 49±2°C and 95%-100% humidity for 24 hours. No defects, such as peeling or scratches, were found.
- Solvent and Cleaning Test: Following MIL-C-675C standards, the filter was exposed to acetone and alcohol for at least 10 minutes each, at room temperature (16°C-32°C). After cleaning, there were no signs of peeling or scratching on the film surface.
- Salt Spray Test: The filter passed the salt spray test after 100 hours in a 35°C environment with a 5% saltwater concentration, showing no damage to the coating.
- Standard Specifications
The Flame Detector Filter comes with the following standard specifications:
| Cut-On Wavelength (µm) | Transmission Band | Transmission |
| 3.2 ± 1% | 3.48–3.55 µm | T > 90% |
| 5.5 ± 1% | 6.3–14 µm | T > 90% |
| 7.3 ± 0.1 µm | 7.8–11 µm | T > 90% |
- General Applications and Examples
The Flame Detector Filter is essential in any application that requires precise flame detection. Some common applications include:
- Gas-Fueled Cookers: Used to detect the presence of flames in domestic and industrial gas cooking systems.
- Industrial Heating and Drying Systems: The filter helps monitor flames in industrial heating units, ensuring safety and optimal operation.
- Domestic Heating Systems: Provides flame detection in residential heating systems, enhancing safety and efficiency.
- Industrial Gas Turbines: Used in turbine systems to monitor flame presence and optimize performance in gas turbines.
- Flame Detection in Combustion Systems: Ensures reliable detection of flames in industrial burners, furnaces, and combustion chambers.
These filters provide the necessary precision and reliability required in flame detection systems across a variety of industries, ensuring safety and efficiency.
- SOT Strengths and Capabilities
Shape Optics Technologies (SOT) specializes in the development and production of high-performance optical filters, including the Flame Detector Filter. With a focus on precision, durability, and customization, SOT provides solutions that meet the rigorous demands of industrial flame detection systems. Our products are manufactured to the highest standards, ensuring long-term reliability and optimal performance in even the most challenging environments. SOT’s expertise in optical engineering allows us to provide tailored solutions that address the unique needs of our customers, making us a trusted partner in flame detection technology.
- Standard Products
The following standard Flame Detector Filters are available:
| Cut-On Wavelength (µm) | Transmission Band | Transmission |
| 3.2 ± 1% | 3.48–3.55 µm | T > 90% |
| 5.5 ± 1% | 6.3–14 µm | T > 90% |
| 7.3 ± 0.1 µm | 7.8–11 µm | T > 90% |
Customization options are available. Please contact us for more information on customized filters designed to meet specific application requirements.
