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DM 401 Connections

DM 401 – Optical Dust Monitor / Transmitter

DM 401 Connections
DUST OPACITY MONITORING SYSTEM. Double pass opacity monitor. Continuous in-situ measurement.
  • Double pass opacity monitor
  • Small and light-weight
  • Low operating cost
  • Minimal maintenance – no moving parts
  • Long Life green LED

Description

Features:

  • Double pass opacity monitor
  • Small and light-weight
  • Low operating cost
  • Minimal maintenance – no moving parts
  • Long Life green LED

Benefits:

  • Make your combustion process more cost-effective.
  • Get the data to show your organization cares about the environment.

Applications:

Stack opacity, Stack dust monitoring, Emission opacity, baghouse dust monitor, Continuous Emission Monitoring, Flow / Dust, Gas Turbines / Compressor, Iron / Steel Industry, Power Plants, Refineries / Petrochem, simple

  • Direct continuous measurement across stack
  • Small, lightweight & low operating costs
  • Simple installation, commissioning and operation
  • No moving parts – minimal maintenance
  • PC based setup, control and data logging
  • Long-life green LED source
  • High measuring accuracy
  • Opacity or mg/m3 (*) after on site calibration according to VDI 2066

Measurement performance

Parameter Units Min Max Comment
Path. length (flange to flange) meters 0.5 10 flange-to-flange distance
Measuring range
Particulate mg/m³ 10.0 1000 after on site calibration
Opacity % 0.0 100.0 user selectable
Accuracy % –2 +2
Resolution mg/m³ 0.1 display resolution
Damping s 1 60 selectable
Drift with temperature % –2 +2 for any 20 °C change
Operating wave length nm 510 540 green LED

Power and air requirements

Voltage Vdc +24 90 … 240 Vac PSU available
Air supply volume l /min 50 200 to each air purge inlet
Air supply fitting 1″ BSP threaded aperature

Interface options

RS 485 ModBus RTU
Analog outputs mA 4.0 20.0 isolated and scalable
Relay contact 3 A @ 30 Vdc level alarm and service alarm

 

Physical

Protection class IP 65 for outdoor use
Operating temperature °C –20 +55 air temperature around the equipment
Gas temperature °C 100 600 heat insulated gaskets included

 

Dimensions

Transceiver 6.02” x 4.8” x 4.72” 153 x 122 x 120 mm
Reflector 6.02” x 4.8” x 4.72” 153 x 122 x 120 mm
Purging air blower unit 12.2” x 8.66” x 9.05” 310 x 220 x 230 mm
Enclosure stainless steel, powder coated
Weight transceiver: 5.5 lbs., reflector: 5.5 lbs. purging air blower unit: 24 lbs. transceiver: 2,5 kg, reflector: 2,5 kg purging air blower unit: 11 kg

 

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