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4500 MkIII (Opacity - US EPA PS-1 & ASTM D6216)

AMETEK Land Opacity and Dust Monitors - 4500 MkIII Compliance Opacity Monitor
A high-specification opacity and dust monitor meeting US and European standards for monitoring combustion processes. 
  • Overview +

    4500 MkIII is the most accurate and reliable continuous opacity monitor available, combining AMETEK Land’s ground-breaking innovation and simple design for precise, problem-free operation.

    Unmatched, class-leading accuracy ensures compliance limits for dust emissions and stack opacity are met with confidence. This avoids the risk of regulator fines while lowering costs through operational efficiencies.

    The 4500 MkIII employs a highly homogenous LED light source to minimize sensitivity to optical misalignment. The multi-prism retro-reflector reduces thermal drift for the lowest possible detection limit. Together with a flood LED to minimize electronic drift, these technologies provide you highly stable, highly accurate results.

    Fitting stack diameters of 0.3m-15m (1 ft-50ft), 4500 MkIII is suitable for the continuous monitoring of dust and opacity in boilers, heaters, furnaces and other combustion applications in the power generation, hydrocarbon processing, industrial boilers, and steel industries.
    The 4500 MkIII achieves the highest possible specification for the fundamental performance parameters for a compliance opacity monitor, as defined by the internationally-recognised ASTM D6216 Standard. Its performance has been independently verified, meeting QAL 1 requirements according to EN 15267-3.

    The built-in menu display is intuitive and simple to use, with simultaneous text and icon prompts. There’s no need to take a laptop or handheld terminal to the installation location, making setup and operation hassle-free.

    4500 MkIII has all the compatible accessories you need to tailor it to your process. Options include a control room unit, auxiliary functions unit, fail-safe shutters and calibration accessories, as well as a range of mountings and adaptors for existing fittings.

    Complies to QAL1 and PS-1 

    Product Special Application

  • Specifications +

    Measuring Technique Double pass transmissometry
    Operating Wavelength 520 ± 20 nm
    Light Source Pulsed High Intensity LED
    Measurement Range Opacity 0-10 % to 0-100 % ; Optical Density 0 - 0.1 to 0-3.0 ; Dust Density 0-15 to 0-1000 mg/m3 (at 5 m pathlength)
    Calibration Error 1.5 % opacity
    Drift (long term)  < 0.3 % opacity / month
    Thermal Stability 0.6 % opacity / 22 ° C ambient change
    Angle of Projection < 2 °
    Angle of View < 2 °
    Response Time ≤10 s to 95 %
    Averaging Selectable from 10 s to 24 hr (1 s increment)
    Pathlength 0.5 to 10 m / 20 in to 32 ft (extended pathlengths to 15 m available)
    Calibration  Automatic zero and upscale check (selectable period 1 to 24 hr in 1 hr increments) 
    Zero Correction  Automatic correction for zero drift 
    Control Panel Display 128 x 64 pixel reflective backlit LCD
    Control Panel Keypad 4 keys for data input
    Control Panel Indicators Power, System OK, Alarm, Calibration
    Operating Temperature -40 to 55 °C / -40 to 131 °F
    Max. Flue Gas Temperature 600 °C / 1112 °F
    Max. Flange Temperature 200  °C / 392 °F
    Flue Gas Water Content  Not sensitive to water vapor. Condensed water must not be present in the measurement path. 
    Electrical Safety IEC / EN 61010-2
    EMC EN 50 081 & EN50 082
    Sealing IP65 / NEMA4X
    Modbus Interface RS485; Opacity, Optical Density, Dust Density and Status information available
    Analog Outputs Isolated 4 to 20 mA Configurable as Opacity, Optical Density, Dust Density
    Relay Outputs System OK, Calibration, Alarm
    Relay Rating 1 A @ 24 Vdc
    Power Supply 24 Vdc nominal (18 to 30 Vdc), 0.3 A nominal (3 A startup)
    Transceiver Dimensions (Hx W x D) 191 x 291 x 413 mm / 7.5 x 7.9 x 16.3 in
    Retro-reflector Dimensions (H x W x D) 101 x 201 x 237 mm / 7.5 x 7.9 x 9.3 in
    Transceiver Weight 6 kg / 13.2 lbs.
    Retro-reflector Weight
    3 kg / 6.6 lbs.
    Enclosure Cast Aluminum, epoxy coated
    Accessories  Fail-safe Shutters, Blowers, Adapter Flanges, Remote Control Units, Additional Outputs Available 
    Approvals  QAL 1, EN 15267, EN 13284-2 
    Performance Specifications  ASTM D6216, US EPA PS-1, PS-11, Procedure 3  
    MARCOM0373 4500MkIII Rev 6
  • Documentation +

  • Video +

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