High Temperature Flow Sensors

Yes. The OFS-2000 series optical flow sensors are designed and certified for EPA 40 CFR Part 75 compliance. They support continuous emissions monitoring system (CEMS) requirements for stack gas flow at power plants, refineries, and industrial facilities. The NIST-certified measurement algorithm and factory calibration ensure data integrity required for regulatory reporting.

No field calibration is ever required. OSI's optical flow sensors are factory pre-calibrated with a drift-free measurement design. Built-in automatic calibration checks and continuous self-test diagnostics run constantly, so there is no need for manual recalibration in the field, even after years of deployment in high-temperature or high-opacity environments.

OSI offers two primary measurement ranges: the standard OFS-2000 covers 0–100 m/sec, suitable for most stack and duct applications. The OFS-2000F is specifically designed for flare stacks with an extended range of 0.03–170 m/sec, enabling accurate detection of both very low flow and extremely high velocity combustion gas streams.

Yes. The OFS-2000W model is specifically designed for high opacity environments such as wet scrubbers and bag houses. It features Automatic Gain Control (AGC) that compensates for signal attenuation caused by particulate matter, moisture, and entrained liquid droplets, ensuring reliable flow measurement even when visibility through the stack is severely limited.

OSI flow sensors are essentially maintenance-free due to their no-moving-parts design. Routine maintenance is limited to semi-annual window cleaning where required. For the LOA-105 aluminum smelter sensor, preventative maintenance every six months includes checking optical alignment and calibration using the TST-104 calibration tool. No consumables, no scheduled parts replacement.

These sensors serve power generation, oil and gas refining, petrochemical processing, aluminum smelting, waste incineration, and environmental compliance monitoring. Specific applications include flare stacks, thermal oxidizers, wet scrubbers, bag houses, carbon capture systems, sulfur recovery units, glass furnaces, catalytic crackers, and primary and secondary air ducts in industrial plants.