Opacity Monitor, Model 445
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  Opacity Monitor, Model 445


The Model 445 is a robust dust concentration monitor for a broad range of applications. The instrument features automatic check cycles, built-in 4 point linearity check and contamination correction.

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Applications
  • Power plants and cement plants
  • Glass, steel and paper industries
  • Electrostatic precipitator control/regulation
  • Special applications, such as thick channel walls and large duct diameters

Technology

The Thermo Scientific Model 445 uses optical-electronic technology to determine opacity or measure mass concentration of dust in stack effluent. The 445 Monitor detects and reports any deviations or exceedances from the emission limit value.

Key Features

  • Meets EPA PS1, ASTM 6216-98 
  • Optical lens test and contamination correction
  • Maximum operating temperature of 1,112 °F (600 °C)
  • 5 User-selectable measurement outputs
  • Easy to operate, user interface may be remotely located
  • Automatically adjusted to Zero/Span

Components

The optical and electronic elements are contained within the sender/receiver unit. A durable pulsed LED serves as the light source. An integral sighting device eases alignment of the sender/receiver and the reflector units. To protect the optical surfaces from dust and high temperature, the sender/receiver and reflector unit are purged with air. The connection unit contains the display, operating elements and all connections. Options include an RCU-MS remote control unit, as well as remote diagnostics via modem.

Automated Features

The Model 445 features automatic contamination correction, check cycle and built-in 4 point linearity check.

 
 
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Purchase Details
SKU : EID-10130710 
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Specifications:
Opacity Measurement Range :(max/min) 0-100% / 0-50%
Transmission Measurement Range :(max/min) 100-0% / 100-50%
Extinction Measurement Range :(max/min) 0-2 / 0-0.3
Dust Concentration Measurement Range :max. 0-4,000 mg/m³, min. 0-200 mg/m³
Accuracy :±2% fullscale
Response Time :1 to 600 sec, in stages from 1 sec, user selectable
Measuring Path :0.5 to 15 m
Measurement Gas Temperature :Above dewpoint up to 600 °C (1,112 °F)
Ambient Temperature :-20 to +55 °C (-4 to +130 °F)
Measurement Gas Pressure :max. +10 hPa / +4 inwc with std purge-air unit; max 40 hPa / +16 inwc with stronger fan)
Class of Protection :IP 65/NEMA 4X
Power Supply :90-260 VAC, 48-62 Hz; 200W power consumption (connection unit); single phase
Dimensions & Weight, Connection Unit :W: 7.7 x H: 8.0 x D: 6.4 inches (196 x 203 x 162.5 mm); 8 lb (4 kg)
Dimensions & Weight, Reflector Unit :W: 8.1 x 10.6 x 9.9 inches (205 x 270 x 250.5 mm); 17 lb (8 kg)
Dimensions & Weight, Sender/Receiver Unit :W: 8.1 x H: 10.6 x D: 14.8 in (205 x 270 x 375.5 mm); 27 lb (12 kg)
Compliance :US EPA PS1, CE, TUV, Clean Air Act (13th Impl. Ord.), GOST
Electronic Interfaces :RS232 service interface; RS422 for optional RCU-MS remote control unit
Signal Interfaces - Analog Outputs :2 analog ouputs: 0/2/4- 20 mA; 750 W mas load, electrically isolated
Signal Interfaces - Relay Ouputs :4 relay outputs: 48 VDC, 1A, 30 W mas.; 48 VAC, 1 A; cycle/maintenance, limit value, malfunction
Signal Interfaces - Digital Inputs :3 digital inputs: 10-25 VAC/10-35 VDC; floating contact (electrically isolated)