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The 4200 dust and opacity monitor is AMETEK Land’s compact, cost-effective solution for the continuous monitoring of dust, smoke and particulates in a wide range of industrial applications. NOTE: The 4200 is currently available only in Asia.

A lightweight design makes installation and positioning simple, even in challenging applications. The low-maintenance design has no moving parts – ensuring it operates reliably and continuously for immediate cost and performance benefits.

Using a single red LED to effectively monitor hot, dirty, or toxic process conditions, 4200 requires only the installation of a transceiver and retro-reflector, fitted on either side of the stack. The system alternates between measurement and flood sources to eliminate drift and ensure accuracy.

Ideally suited to multi-process plants with common exhaust stacks, the 4200 is designed for measurements in power generation, minerals, and industrial boilers.

Have questions? Call +61 2 9622 6327

The 4200’s flexible and reliable measurement makes it ideal for use in a range of applications, including particulate removal systems, combustion efficiency monitoring and precipitator power optimisation.

Easy keypad operation allows straightforward access to the 4200’s functions. Setup, calibration, diagnostic and alarm settings can all be adjusted, providing optimum instrument performance for your process. Measurements can be displayed and output in % opacity or mg/m3.

Extensive accessories enable users to customise the 4200 to their precise process conditions. Options include air blower/mover systems and waterproof covers.

  • Biomass
  • Cement
  • Chemical Processing
  • Emissions Monitoring
  • Iron to Steel
  • Lime
  • Paper
  • Waste
TechniqueDouble pass/path transmissometry
Operating Wavelength623 ± 20 nm
Light SourceHigh intensity red LED
RangesOpacity: 0 – 20 % to 0 – 100%;
Dust Density: 0 – 100 to 0 to 999 mg/m3
Linearity< 2 % of range*
Resolution0.1 % Opacity; 0.1 mg/m3 Dust Density
Drift< 3 % of range per month
Angle of Projection< 5 °
Angle of View< 5 °
Response Time5 seconds to 90 % of final value
AveragingSelectable from 1 s to 59 s, 1 min to 59 min, or 1 hr to 8 hrs
Suitable for Stacks0.3 to 9.7 m diameter / 1 to 32 ft
Flange-to-flange Pathlength0.6 to 10 m / 2 to 33 ft
CalibrationManual zero & upscale check
MethodBuilt-in audit jig
*Performance reduced for pathlengths
Single calibration constant
> 7.5 m / 25 ft
Control Panel
Display4-digit; red LED
Keypad4 keys for data input; easy access via the removable cover panel
Status indicatorsSystem OK, Alarm, DC Power
Operating Temperature-20 to +55 °C / -4 to +131 °F
Max. Flue Gas Temperature600 °C / 1112 °F higher temperature available
Max. Flange Temperature200 °C / 400 °F
Environmental RatingIP65 / NEMA4
SafetyConforms to EN 61010
EMCConforms to EN 50 081 and EN 50 082
Analogue output0, 2 or 4-20 mA current loop, fully isolated
Relay outputsSystem OK, High Alarm
Contact Type/RatingIsolated changeover contacts rated at 1A@24V d.c., 0.5 A@125 V a
Power Supply90 – 260 V a.c., 50/60Hz, (universal input)
(additional for typical purge blower 110 V or 230 V, 50 or 60 Hz, 500 W)
Power Rating5 W
Air Requirements(only for air mover option)
Instrument air5 – 8 bar / 75 – 120 psi ; 170 Nl/min / 36 cfm
Mechanical Data
Dimensions (H x W x D) Transceiver157 x 127 x 404 mm / 6 x 5 x 16 in
Retro-reflector127 x 127 x 200 mm / 5 x 5 x 8 in
Transceiver5 kg / 11 lb
Retro-reflector2 kg / 4.4 lb
Air Blower/Air MoverA range of purge air supply options is available
Fail-Safe ShutterProtects the instrument if the purge air supply fails
Weather CoversAdditional protection for severe environments
Data Logger SystemSoftware program for logging and correction of data
Alignment ToolFlange mounted light source and target for use during installation
Calibration FiltersCertified neutral density filters for instrument linearity check
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