Industrial Flame Monitoring Solutions


Stromquist and Company offers industrial flame monitoring solutions for the toughest environments. This includes multiple sensor options (UV, IR, and combined UV/IR), viewing heads, signal processors and all-in-one solutions. 

We also provide digital and analog outputs, multi-burner flame discrimination, remote configuration, monitoring and diagnostics, x-ray and gamma ray immunity and flare stack monitors.


The S55XBE series viewing heads offer multiple sensor options of IR, UVTron, and IR/UV for flexibility to meet a wide array of applications. The system is not adversely affected by x-rays and gamma rays during operation, making them ideal for monitoring all fuel flames and single or multiple burners firing multiple fuels.

• Multiple models (IR/UV, IR only, and UVTron only) offer application flexibility.

• All models include electronic check (no mechanical shutter) for self-check of the system.

• Numeric two-digit display for each sensor on the back of the viewing head provides UV and IR flame count.

• Quick disconnect cable (order separately) for non-PF models. PF models provided with factory installed cable.

• Mountable in any orientation.

• Includes imbedded temperature sensor


Model P522 are fail-safe, self-checking signal processors that are used with two switched S55XBE series viewing heads. They offer independent gain adjustments for each sensor and multiple flicker set points for IR, which makes them ideal for applications where a high level of discrimination is required.

• 4-digit digital flame signal display, 4 LED status indicators
and analog bar graph provide continuous system status.
• Panel mounted design and plug-in terminal connectors
allow for easy installation.
• Adjustable Flame on/off threshold.
• Supports two switched viewing heads.
• Two configurable files for remote selection.
• Scalable mA output.
• Modbus RS422 communication for use with FlameToolsPC or FlameTools-HMI/U supports 64 loops.


The U2S Series is an all-in-one integrated processor and viewing head system which is uniquely suited for single or multi-burner, multi-fuel, and difficult flame detection applications. The all-in-one solution eliminates the need for a separate processor, which saves on cabinets and wiring.

• Electronic check (no mechanical shutter) for self-check of the system.
• Independent configuration and adjustable gain settings for each sensor.
• Ten selectable flicker frequency filters for solid state UV and IR sensor (model dependent).
• New updated, fully programmable touch screen interface, with an easy menu for an enhanced user experience.
• Modbus RS485 communication for use with FlameToolsPC or FlameTools-HMI/U supports 248 loops and 32 loops, respectively.
• Advanced safety features