OPACITY MONITOR

1) DSL-340

Overview
The DSL-340 Dust Monitor uses the innovative Dynamic Detection Principle (DDP) to measure dust, smoke and particulate concentration present in an exhaust gas flow in a duct, stack or flue. A light beam emitted from the Transceiver (TRX) passes across the duct, stack or flue to a Reflector, which returns the light beam to the TRX. Particles moving through the beam will cause fluctuations in the intensity of light received by the TRX. When calibrated against standard reference measurements, the magnitude of the signal variation relates directly to the dust, smoke and particulate concentration.
Features
• In-situ measurement directly in exhaust gas flow.
• Innovative Dynamic Detection Principle, (DDP), measurement technique.
• Measurement reading as mg/m3(when calibrated against standard reference measurements).
• Choice of interface options enabling easy integration into plant control system.
• Free utility software for PC based setup, control and data logging.
Specifications
• Measuring Principle: Dynamic Detection Principle, DDP, (or Scintillation)
• Operating Wavelength : 510 – 540 nm (green LED)
• Measurement Reading : Concentration (mg/m3)
• Measuring Range : 0 – 1000 mg/m3(user selectable)
• Ambient Operating Temperature : -20 - +50 °C
• Exhaust Gas Temperature: Up to +600 °C
• Accuracy: +/- 2%
• Voltage: + 24 VDC (Optional 90-260 VAC)
• Ingress Protection: IP65
Benefits
• Simpler installation than single pass opacity monitors
• Better accuracy over shorter path lengths, i.e. smaller duct diameter
• Rugged design with no moving parts so low maintenance
• Latched head design to enable ease of access to optics for maintenance
Application
• Non compliant processes
• Boilers and furnaces
• Crematoria
• Incinerators
• Post particulate removal systems such as filter bag houses, electrostatic precipitators or cyclones
• Marine industry for monitoring smoke emissions from diesel engines, incinerators and boilers

2) DSL-460

Overview
The DSL-460 Opacity Monitor uses a double pass light transmission technique to measure dust, smoke and particulate emissions present in an exhaust gas flow in a duct, stack or flue. A light beam emitted from the Transceiver (TRX) passes across the duct, stack or flue to a Reflector, which returns the light beam to the TRX. Any dust or smoke particles present will attenuate the light beam and cause the intensity of the light received by the TRX to fall. The amount of light lost in crossing the duct, stack or flue is the Opacity and this correlates to the amount of dust or smoke present in the gas flow.
Features
• In-situ measurement directly in exhaust gas flow
• Measurement reading as % Opacity or particulate as mg/m3
• Integrated visual alignment aid to simplify installation
• In-situ zero and calibration check facility
• Choice of interface options enabling easy integration.
Specifications
• Measuring Principle: Light Transmission
• Operating Wavelength: 510- 540 nm (Green LED)
• Measurement Reading: Opacity(%) or Particulate(mg/m3)
• Measuring range: Opacity:0-100 %
• Particulate density: 0-1000 mg/m3
• Accuracy: +/- 2 %
• Voltage : +24 Vdc (optional 90-260 Vac PSU available)
• Ingress Protection Heads: IP 65
• Ambient Operating Temperature: -20 to + 50 °C
• Analogue Outputs: 4-20 mA
• Serial Communications : Modbus RTU, Internal USB
Benefits
• Plug and socket connection enabling simple installation
• Better accuracy over short path lengths
• Rugged design with no moving parts so low maintenance
• Latched head design to enable ease of access to optics for maintenance
Application
• Process control for verification, optimisation and fault diagnosis (non compliant processes)
• Marine industry for monitoring smoke emissions from diesel engines, incinerators and boilers
• Post particulate removal systems such as filter bag houses, electrostatic precipitators or cyclones
• Boilers and combustion furnaces

3) DSL 320

Overview
The DSL-320 Opacity Monitor uses a double pass light transmission technique to measure dust, smoke and particulate emissions present in an exhaust gas flow in a duct, stack or flue. A light beam, emitted from the Transceiver, (TRX), passes across the duct, stack or flue to a Reflector, which returns the light beam to the TRX. Any dust or smoke particles present will attenuate the light beam and cause the intensity of the light received by the TRX to fall. The amount of light lost in crossing the duct, stack or flue is the Opacity and this correlates to the amount of dust or smoke present in the gas flow.
Features
• In-situ measurement directly in exhaust gas flow
• Measurement reading as % Opacity
• In-situ zero and calibration check facility
• Choice of interface options enabling easy integration into plant control system
• Free utility software for PC based setup, control and data logging
• Optional Operator Interface with different mounting configurations
• IP65 rated external enclosure
Specifications
• Measuring Principle : Light Transmission
• Operating Wavelength: 510 – 540 nm (green LED)
• Measurement Reading : Opacity (%)
• Measuring Range: 0 – 100 % Opacity (user selectable)
• Accuracy : + / - 2 %
• Voltage : +24 VDC (optional 90-260 VAC PSU available)
• Analogue Outputs: 4.0 – 20.0 mA
• Ambient Operating Temperature: -20 to + 50 °C
• Ingress Protection - TX/RX Heads : IP65 for external use
Benefits
• Simpler installation than single pass opacity monitors
• Better accuracy over shorter path lengths, i.e. smaller duct diameter
• Rugged design with no moving parts so low maintenance
• Latched head design to enable ease of access to optics for maintenance
Application
• Non compliant processes
• Boilers and furnaces
• Crematoria
• Incinerators
• Post particulate removal systems such as filter bag houses, electrostatic precipitators or cyclones
• Marine industry for monitoring smoke emissions from diesel engines, incinerators and boilers