Xact® 640 Multi-Metals Monitor

Xact® 640 Multi-Metals Monitor

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.

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Features

  • Automatic quality assurance, alarms, and control features
  • Identification and measurement of 67 elements simultaneously
  • Internal calibration check incorporated with every measurement
  • Automatic daily, upscale, blank and flow audit
  • Sampling, analysis, and near real time reporting every 15, 30, 60, 120, and 240 minutes
  • Recognized by EPA as an innovative clean air technology (Clean Air Excellence Award, 2007)
  • Proven technology

Benefits

  • Single monitor platform for mercury (Hg) and HAP metals monitor compliance
  • No PM monitor needed to comply with MATS
  • May be used to meet 40 CFR Part 60 and 63 regulations
  • Measures total Hg in μg/m3
  • Automated multi-metals analysis reduces expenses, time, and resources
  • Non-destructive analysis allows for sample archiving
  • Sensitive and reliable, ng/m3 to μg/m3 range

Applications

The Xact® 640i monitoring system can simultaneously identify and measure multiple metals in flue gas to provide data for use in the following applications.

  • Hg CEMS
  • HAP metals CEMS
  • Benchmark a new process
  • Optimization of emission controls
  • Permitting
  • Regulatory compliance
  • Risk management
  • Process control
  • Corrosion monitoring

Technical Literature

Specifications

Measurement methodBased on EPA Method IO 3.3: Determination of Metals in Ambient PM Using XRF
Key applicable elementsSb, As, Ba, Cd, Ca Cr, Co, Cu, Fe, Pb, Hg, Mn, Ni, Se, Ag, Sn, Ti, Tl, V, Zn, and more available
Measurement rangeDemonstrated from MDL up to 2 mg/m3
Detection limitsMetal and sample time dependent; See datasheet performance section
Sampling and analysis times15, 30, 60, 120 and 240 minutes
Calibration stability check frequencyAutomatically with each sample analyzed
Estimated recalibration frequencyAnnually, when manufacturer’s operating recommendations are followed
LinearityCorrelation coefficient >0.99
Size and weightBase unit: 41”W x 34”D x 81”H, 580 lbs.
Transport module: 38”W x 24”D x 74”H, 120 pounds
Power requirementsBase unit: 230 VAC @ 14 amps, 115 VAC @ 28 amps
Transport module: 230 VAC @ 30 amps
Compressed air: 25 CFM @ 50 psig
Note: Base unit and air conditioner power can be energized independently; Transport module power depends on length of heated sample lines
OutputsASCII text files, Modbus TCP/IP
Options• Add or subtract elements
• Total or particulate phase elements
• Sample line length
• Probe length

US EPA Award

Our Xact® 640 Multi-Metals CEMS won the Clean Air Excellence Award from EPA in 2007.

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