The Xact multi-metal Continuous Emissions Monitoring System (Xact 640) accurately measures 25 elements in stack gas emissions. Using X-ray fluorescence, the Xact 640 is able to measure vapor and particulate phase metals that have been collected on a reactive filter. Results are reported every 15 minutes in micrograms per dry standard cubic meter (µg/dscm).

The Xact 640 offers an easy-to-use, reliable alternative to EPA standard Method 29 and feedstream analysis.

• Accuracy of ±5% for concentrations
  ranging from 10 to more than 1,000 µg/dscm.

• Precision better than 2%.

• Automatic daily upscale, blank and flow checks.

• Simultaneous reporting of 25 metals including Antimony, Arsenic, Barium, Cadmium, Chromium, Cobalt, Copper, Lead, Manganese, Mercury, Nickel, Selenium, Silver, Thallium, and Zinc and others.

• Continuous QA checks with every sample.

• Data reports available for automatic transfer to site DAS systems or MS Excel.

• Non-destructive analysis allowing for archiving of samples and reanalysis at a later date.

• Automatic alarming, QA, and control features.

• Allows for direct determination of stack gas metal concentrations without reliance upon assumed control efficiencies or feed stream testing.