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4400 (Opacity – EN 15267)

AMETEK Land Opacity and Dust Monitors - 4400 Non-Compliance Opacity and Dust Monitor
Dust and opacity monitor for monitoring combustion processes where automatic calibration checks are not needed.
  • Overview +

    The 4400 is the most accurate and reliable monitor available for dust and opacity measurements in combustion applications not requiring automatic calibration checks.

    Optimised for multi-process plants, 4400 delivers you immediate performance and cost benefits through easy installation, simple operation and low maintenance requirements.

    A highly homogenous green LED light source, glass multi-prism retro-reflector and flood LED minimise sensitivity to changes in alignment and ambient temperature: this ensures low optical and electronic drift, giving the exceptionally accurate, stable measurement you need.

    Ideal for combustion applications where an automatic calibration check is not required, the 440 is suitable for use power generation, industrial boilers and pulp & paper industries.


    The 4400 accurately measures dust and opacity levels across key combustion processes, including electricity generating units, industrial boilers, furnaces, kilns and dust collectors.

    Lightweight and compact, the 4400 is designed to operate easily, with no moving parts to ensure high reliability. The menu tree is intuitive, using text and icon prompts. A manual calibration check can be performed while the process is running.

    Suitable for monitoring dust and opacity across an extensive range of combustion processes, the 4400 operates from -40 °C to 55 °C (-40 °F to 131 °F). This brings unprecedented flexibility to a wide variety of applications.

    The 4400 is AMETEK Land’s advanced, compact monitor for opacity and dust.

    TUVdotCOM approved to EN 15267.
    TUV Rheinland Certified

    *4500 MkIII is recommended for measurements requiring automatic zero and upscale checks, as specified by ASTM D6216 and US EPA Performance Specification 1.

  • 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 0-20 to 0-1000 mg/m3 (at 5 m pathlength)
    Calibration Error 1.5 % opacity
    Thermal Stability 1.0 % opacity / 22 °C ambient change
    Angle of Projection < 3 °
    Angle of View < 3 °
    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)
    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
    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 (H x 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 Aluminium, epoxy coated
    Approvals EN 15267 certified by TUVdotCOM

  • Documentation +

  • Related Applications +

    • Iron to Steel - Stack Emissions
      Stack Emissions

      Combustion processes in steel production produce emissions which must be monitored. We offer the Model 4500 MkIII, Model 4400 and Model 4650, depending on process needs.

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