In December of 2015, EPA finalized the Petroleum Refinery Sector Risk and New Source Performance Standards.  EPA MACT RSR 40 CFR 63.670 requiring 96.5% combustion efficiency or 98% destruction efficiency on all flares. It mandates that, if steam or air assist are used, the operator must account for the flows of these gases to measure and report the dilution in the combustion zone.

Precisely measuring the proper amount of steam to achieve maximum combustion efficiency has proven to be a difficult task and trying to calculate it is unreliable.

OFS 2000 sensors offer a pro-active, real-time-data approach to monitoring/controlling air and steam assisted flare lines to avoid over-steaming, excess aeration, and flame lift off - all of which cause compliance to go up in smoke.

The OFS-2000R can “see” through steam in the vapor phase, delivering accurate, quick-responding control signals which enable the operator to match the steam flow exactly to the flare output. OFS 2000R has a 5000:1 turndown ratio. It will not create a pressure drop, and is easily mounted on a steam line.

OFS-2000 flow sensors are immune to the effects of temperature, pressure, humidity, density, path length, turbulent flow, or gas composition. OFS-2000R - series sensors are able to report velocities from 0.03 m/sec to 40 m/sec with +/- 2% accuracy. Response time of 0.3 seconds with 3 second updating, combined with full-path averaging make OFS 2000R the ideal sensor for steam line monitoring.

With added temperature and pressure inputs, OFS 2000R is capable of delivering moment-by-moment mass flow data, taking any guesswork out of tailoring fuel/air mix for optimum combustion.