Cooper Environmental’s Xact® 640 is the first Multi-Metals Continuous Emissions Monitor to be proven successful for accurately measuring elemental concentrations in smoke stacks by capturing and measuring both particulate and vapor phase metals.
The Xact® 640 system uses reel-to-reel filter tape sampling and nondestructive X-ray fluorescence (XRF) analysis to monitor stack hazardous air pollutant (HAP) metal emissions. An isokinetic sub-sample of stack gas goes into the stilling chamber and then drawn through a chemically reactive filter tape. Vapor phase metals, including mercury, are deposited along with particulate-phase metals on the filter tape.
In 2007, the US EPA recognized the Xact® CEMS as an outstanding achievement in innovative clean air technology with a clean air excellence Award. In addition, the EPA approved the Xact® 640 as an alternative method for periodic Method 29 testing, feed stream analysis, and monitoring emissions during plant operation.
- Single monitor platform for Hg and Hazardous Air Pollutant metals compliance
- No PM monitor needed to comply with Mercury and Air Toxics Standards
- May be used to meet 40 CFR Part 60 and 63 regulations
- Measures total mercury in µg/dscm
- Saves expenses, time, and resources as compared to Method 29
- Non-destructive analysis allows for sample archiving
- Sensitive and reliable (ng/m3 to µg/m3 range)
- Automatic quality assurance, alarms and control features
- Gas phase calibration not required
- Identification and measurement of 23 elements simultaneously (refer to the periodic table on the 640 Spec Sheet below)
- Internal calibration check incorporated with every sample analyzed
- Proven RTR XRF technology demonstrated on the ocean floor, Mars, and in thousands of beta attenuation monitors
- Daily automatic upscale, blank, and flow checks
- Recognized by the EPA as an innovative clean air technology (Clean Air Excellence Award, 2007)
- Sampling, analysis, and near-real-time reporting (every 15, 30, 60 and 120 minutes)