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AMESA-M – Mercury Sorbent Trap System (STMS)

AMESA-M – Mercury Sorbent Trap System (STMS)

Accurate Sampling of Mercury in the Range of 1 μg/m3


AMESA-M Mercury Sorbent Trap System (STMS) Free Standing Version

control cabinet with controller, sample conditioning, filters and flow volume meters in a NEMA 4 enclosure for harsh ambient conditions.

AMESA-M Mercury Sorbent Trap System (STMS) Wall Mounted Version

ENVEA Altech Environment U.S.A. is pleased to introduce the smaller, simplified version of our AMESA-M. The smaller, more cost-effective unit is compliant with all U.S. EPA standards.

Available in a standalone cabinet and wall mounted version.

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  • Municipal and Hazardous Waste Incinerators

  • Industrial Boilers

  • Power & Combustion

  • Chemical & Petrochemical Plants

  • Cement Kilns

  • Sorbent Trap Monitoring System (STMS) according to US EPA Performance

  • Specification 12b (adaptation of test method 30b) and Procedure 5

  • Flue gas is extracted through a heated sampling probe

  • Sampling of mercury on paired sorbent traps (for QA purposes, as required by regulations)

  • Sample flow rate is proportional to flue gas flow rate

  • Fully automatic sampling from 5 minutes to 4 weeks

  • Easily transportable

  • Remote control via Internet or Intranet and direct communication with DAS system

  • Easy transfer of the operating data protocol with USB memory stick

  • AMESA-M is an independent, stand alone system. All functions controlled directly with the integrated touch-screen interface - there is no need for additional electronics (laptop)

  • All system parts are installed and well protected in a NEMA 3S cabinet

  • AMESA-M design is based on the many years of experience gained with the AMESA-D dioxin sampler

  • Extensive RM validation in the US and in Europe

  • Dimensions: 72 in H x 24 in W x 20 in D

  • Weight: 396 lbs

  • Power Consumption: 6 kW

The AMESA-M long-term sampling system is designed to meet the requirements of continuous mercury monitoring applications. This unique system is a development of the proven AMESA system originally designed to measure micro-pollutants (such as dioxins/furans) in flue gas streams.

The AMESA-M system consists of a control cabinet and sample probe assembly. The heated sample probe is equipped with paired mercury sorbent traps and extracts a sample from the flue gas stream under volume proportional conditions. Gaseous mercury (elemental Hg and oxidized forms of Hg) is collected in the sorbent trap.

The traps are placed at the entrance of the sampling probe, which is mounted on the stack or duct. The probe mounts directly onto a standard flange and a monorail can be used to support longer probe tube lengths.

After flowing through the probe and traps, the extracted sample gas passes through a heated umbilical to the control cabinet for precise volume determination. The gas passes through an electric gas cooler in which the gas is cooled down to 5°c. Condensate is removed via a peristaltic pump.

After the gas cooler, the dried gas passes to a pair of acid gas scrubbers, fine particulate filters and water slip sensors, then to a pair of rugged high precision flow controllers which determine and accurately control the mass flow, compensating for gas pressure and temperature. The control system converts the measured operating volume into standard volume. No maintenance is required under normal operating conditions other than filter and charcoal scrubber media replacement. A fully automated audit kit is available which eliminates the potential for human error during audits. The audit kit is controlled via the large user interface and in the event of an audit failure performs a 3 point calibration and logs the results.

The  AMESA-M communicates directly with the Data Acquisition System via Modbus or analog signals, and has data storage capability of up to 4 weeks. Data can also be downloaded via USB flash drive. After each measurement cycle, the traps are removed for analysis. The analysis is made with an on-site analyzer or by a certified laboratory.