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

Opacity and Dust monitoring

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.

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GENERAL SPECIFICATION

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

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