Lighthawk Model 560 Brochure

The heart of the Opacity/Dust Monitor is an electronically modulated (2400Hz), intensity controlled LED located in the Optical Head assembly. Light from the LED is projected from the Optical Head across the stack/duct sample area to a Retroreflector on the opposite side. The reflected light re-enters the Optical Head, where it is evaluated by a signal detector. If the stack is clear, the light transmission is 100% (zero opacity). When the reflector returns no light, the transmission is zero (100% opacity). Opacity can be correlated against a reference methods to calculate dust loading.

LightHawk Optical Head and Retroreflector Assemblies

The Optical Head and Retroreflector Assemblies are housed in rugged aluminum castings. The Optical Head contains the active electronics necessary to project a light beam across the stack/duct to the Retroreflector assembly and to detect reflected light. The sealed Optical Head subassembly is designed for simple cover removal, allowing complete access to the electronics.

Purge System

A purge air system is furnished with each LightHawk®. The system supplies purge air to the Optical Head and the Retro-reflector, protecting the instruments from stack gases and significantly reducing maintenance intervals. Purge Air sensing switches and optional aluminum fail-safe shutters are provided in case of power loss or interruption. Purge fail/power fail alarms are standard.

Enhanced Remote Panel

Uses a large, back-lit, LCD graphics display with English-language, menu driven screens, providing ready access to all information needed for full use of the system. In addition, the user can graph up to the most recent 100 values of a selected parameter, such as:

• Opacity, Optical Density, or Particulate Concentration (averaged or instantaneous)
• Calibration Values (Zero, Upscale, or Dust [compensation])

The keypad, a rugged 20-button ensemble inlaid under a tough, hard coated, scratch and chemical-resistant Lexan coating, can be used to:

• Display Opacity, Optical Density, or Particulate Concentration
• Configure the Relay Outputs
• Configure the Analog Outputs
• Edit Parameters such as Path Length Correction Factor
• Set Alarm Values for Opacity, Cal Zero, and Upscale Cal
• Load Linearization Curves for Correlation to Particulate Concentration

Standard with the LightHawk® Remote Panel is a security keylock for protection of important calibration parameters. System elements communicate over a single twisted pair using a commercial network communication protocol. Bright LED indicator lights are used to indicate faults and alarms. The four optically-isolated analog outputs, normally packaged within the Remote Panel can also be offered in a separate housing for convenient installation.

Optical Head Keyboard/Display

Uses a 10 button keypad & 6 digit readout to display and/or enter:

• Instantaneous Opacity
• Average Opacity
• Upscale Calibration
• Calibration Zero
• Dust Compensation
• Path Length Correction Factor
• Status Codes
• Diagnostic Data about the Analog Signals Inside the Optical Head (no need to open the Optical Head)
• Particulate Concentration Curves
• Optical Gains
• Alarm Settings

With optional Six Point I/O board, LightHawk® meets all PS-1 and ASTM D6216 requirements without a Remote Display Panel.

Calibration Kit

The calibration kit, standard with the LightHawk®, is used as an additional check of the unit’s proper operation and calibration. The calibration fixture attaches to the front face of the optical head and has been preset to return the same amount of light as the retroreflector when the stack or duct is clear.

Ethernet Interface

The LightHawk® Enhanced Remote Panel now features 10/100 Based Ethernet interface as standard equipment. This capability provides a multilevel password protected interface to TCP/IP networks such as LAN’s or the Internet. Client side user interface access is via standard web browsers. Simultaneous Modbus TCP access to instrument parameters and emission data is also supported.

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The D-R 290 uses the double-pass method according to the auto-collimation principle. The light beam traverses the measuring path twice. The attenuation of the light beam by the dust content in the measuring section is measured and evaluated.

Key Benefits

• Continuous and contact-less measurement
• Automatic zero and span check
• Automatic measurement and correction of contamination of optical surfaces
• Extremely powerful and stable super-wide band diode (SWBD) light source
• Extremely low-maintenance
• Fail-safe shutters with purge air monitoring as option
• Certified according to EN 15267-3
• Compliant with US EPA 40 CFR 60 PS1 and ASTM 6216

Advantages of the new generation

• Digital Modbus interface according to VDI 4201-3
• Convenient operation with remote access option
• All settings can be changed without opening the device
• Compatible with universal display and control unit D-ISC 100

Applications

Suitable for dust concentration measurement

• on incineration plants
• on power plants
• on cement plants
• in the metal industry
• on plants according to IED 2010/75/EC
• on converter plants and asphalt mixing plants
• on plants for the incineration of biomass

Suitable for measuring the opacity of flue gas

• on plants in accordance with U.S. EPA 40 CFR 60 PS1, special MCOC required
• on cruise and container ships.

Suitable for measurement of dust load in warehouses

Download Specifications

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Alternative product D-R 290 (2. G)

The D-R 290 works according to the transmission principle. The measurement is continuous, non-contact and without sampling in the exhaust gas flow. The D-R 290 is particularly suitable for monitoring medium to high dust concentrations.

For tunnel projects SMART/AQM

Air quality monitor with IoT visible opacity and gas sensor for use in tunnels. Visibility measurement is based on the scattered light principle, gas measurement with up to 3 electrochemical cells.

The DURAG D-R 220 was a compact and cost effective transmittance dust and opacity measuring device for monitoring medium to high dust concentrations in dry flue and process gas.

Key Benefits

• Non-contact measuring method
• Continuous measurement of opacity and dust concentration
• Suitable for medium or high dust concentrations on short to medium measuring lengths
• Automatic internal self-test, zero point and reference point check
• Manual contamination and linearity check
• Extremely low-maintenance due to self-test functions and LED source
• Easy installation and commissioning with universal operating unit and adjustment tool
• Convenient operation including remote access capability
• Cost-effective, small measuring system
• Operation with or without control unit

Applications

Suitable for dust concentration and opacity measurement

• Measurements with variable flow speeds
• Visibility Monitoring

Industries

• Power industry
• Biomass incineration
• Waste incineration
• Cement industry
• Crematories
• Process monitoring

Opacity measurements on ships

• Ro-Ro ships
• Cruise ships
• Container ships

Also suitable for

• Cost effective process monitoring
• Filter monitoring
• Measurement of ambient air dust-load in halls or warehouses

Download Specifications

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Download Specifications

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