Compact Flame Scanner SAX200

Overview

The Compact Flame Scanner SAX200 is a flame detection device engineered for industrial combustion safety and monitoring applications. It receives optical signals from flame radiation through a combustion chamber window and analyzes them using onboard digital signal processing to extract flame features such as intensity and flicker frequency. When a proper flame is detected, safe fuel flow continues; if not, the scanner triggers safety logic to prevent fuel delivery and reduce explosion risk. 

Designed for robust industrial environments, the SAX200 flame scanner supports standard outputs including RS485 digital communication, 4–20 mA analog output, and dry contact relay, enabling seamless connection to PLC, DCS, or machine safety systems for automatic shutdown, alarm indication, or fuel valve control. 

Key Features & Technology

The SAX200 Compact Flame Scanner incorporates advanced features for flame detection and diagnostics:

• Digital optical flame detection using high-speed 32-bit signal processing to accurately capture flame presence and characteristics. 

• Multi-spectrum flame signal analysis covering UV, visible, and infrared ranges for greater reliability. 

• Standard industrial output interfaces: RS485/Modbus, 4–20 mA, and dry contact relay for direct integration with control and safety systems. 

• Rapid flame loss detection with safety logic interfacing to immediately trigger fuel shut-off or alarm conditions. 

• Designed for continuous operation in challenging industrial environments, with rugged optical sensor assembly and electronic housing. 

The compact style eases installation in tight burner and combustion chamber environments while maintaining high detection accuracy. 

Industrial Applications

The SAX200 flame scanner is used in critical combustion and industrial safety systems, including:

• Industrial burners and boilers where continuous flame monitoring ensures proper combustion. 

• Gas turbines and steam generators requiring rapid flame status feedback. 

• Heat recovery systems and furnaces in petrochemical and refinery environments. 

• Process heaters and industrial combustion appliances for fuel-to-flame verification. 

In these applications, accurate flame scanning helps avoid unsafe fuel flow, prevent thermal damage, and support automated safety shutdown sequences. 

Installation & Integration

Installation involves mounting the compact flame scanner so the optical sensor can view the combustion zone through an appropriate sighting window or optical port. Electrical connections typically include power supply, RS485 communication lines (often Modbus), analog 4–20 mA outputs for control systems, and dry contact relays for alarm or shutdown interfaces. Proper alignment and optical clarity are essential for reliable operation. 

Request a Quote for Compact Flame Scanner SAX200

Request a quote for the Compact Flame Scanner SAX200 to ensure accurate and reliable flame detection in your industrial combustion systems. Contact Seven Star LLC for pricing, availability, and technical support.

Technical Specifications

Technical Overview

The Compact Flame Scanner SAX200 is manufactured by Sepanta Electronic Tabarestan (S.E.T), a specialist instrumentation manufacturer, and is designed for flame detection and combustion safety monitoring in industrial burner and boiler systems. Per the manufacturer’s official documentation, the SAX200 family covers several sensor variants matched to different application needs: infrared photodiode versions (S21Cx2) for combustion chamber monitoring on gas and oil burners, ultraviolet photodiode versions (S22Cx2) for selective flame monitoring in multi-burner chambers where distinguishing one flame from adjacent burners matters, visible-light photodiode versions (S23Cx2) suited to coal or oil flame detection, and a UV-lamp-based version (S18Cx2) for gas and oil monitoring — a microprocessor analyzes the UV-visible-infrared flame radiation signature and its flicker characteristics to confirm genuine flame presence versus a false signal.

Output options include a 4–20 mA analog signal, an isolated RS-485 serial communication interface, an SPDT flame relay rated 115 VAC at 0.5 A, and an SPST ready relay for system status indication. The unit operates on 24 VDC power with a maximum current draw of 170 mA, across an operating temperature range of −20°C to +70°C, weighing approximately 2.5 kg with a 1-inch internal-thread process connection for mounting at the combustion chamber sighting window. The scanner carries an IP67 ingress protection rating and an Ex db IIC explosion-proof rating, suitable for installation in classified hazardous areas around burner and boiler equipment. Seven Star LLC notes that the manufacturer’s published materials did not state an explicit flame response time figure, and any additional third-party certifications beyond the Ex db IIC rating should be confirmed against the full datasheet before being cited in a customer’s compliance documentation.

Applications

The SAX200 is used for continuous flame monitoring and safety shutdown interlocking on industrial burners and boilers, gas turbines and steam generators, heat recovery systems and furnaces in petrochemical and refinery service, process heaters, and other industrial combustion appliances where verifying stable flame presence is essential to preventing unsafe fuel accumulation and explosion risk.

Why Seven Star LLC

Seven Star LLC supplies genuine SAX200 flame scanners to customers across Oman and the GCC, and helps confirm the correct sensor variant (IR, UV, visible-light, or UV-lamp) and output configuration for a specific burner type and control system integration before order confirmation.

Request a Quote for Compact Flame Scanner SAX200

Contact Seven Star LLC to request a quotation for the Compact Flame Scanner SAX200. Our team can help confirm the correct sensor variant for your burner or boiler application, and support reliable delivery across Oman and the wider GCC region.

Ordering Notes

When requesting a quotation, please specify your fuel type (gas, oil, or coal), whether your installation has multiple burners requiring flame-discrimination between adjacent flames, and your preferred output signal (analog, RS-485, or relay) for integration with your burner management system, so Seven Star LLC can confirm the correct SAX200 sensor variant for your application.

Safety-Critical Reliability

Because a flame scanner sits directly in the safety-shutdown path of a burner management system, false-positive readings (indicating flame when none exists) and false-negative readings (missing a real flame) both carry real safety consequences — the former can allow unburned fuel to accumulate, while the latter can cause unnecessary trips that reduce plant availability. Seven Star LLC recommends selecting the sensor variant best matched to the specific flame’s spectral characteristics for the fuel type in use, and following a regular window-cleaning and functional test schedule to maintain reliable detection performance over the scanner’s service life.

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