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Specifications
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Measuring
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Technique:
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Cross stack, double pass / path transmissometry
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Operating Wavelength:
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520 ± 20 mm
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Light Source:
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High Intensity LED
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Range:
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Opacity 0 - 20 % to 0 - 100%
Optical Density 0 - 0.2 to 0 - 3.0
Dust Density 0 - 100 to 0 - 4000 mg/m3
User Selectable
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Accuracy:
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±0.2 Opacity
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Linearity
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< 2% of range
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Resolution:
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0.1% Opacity: 0.001 Optical Density: 0.1 mg/m3 Dust
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Suitable for Stacks diameter:
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2 ft. to 82 ft / 0.6 to 25 m
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Installation Pathlength:
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3 ft to 82 ft / 0.97 to 25 m
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Calibration:
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Automatic Zero and upscale calibration
Selectable interval 1 to 24 hours in 1 hour steps
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Response Time:
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< 10s
(< 2s with no damping)
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Calibration Error per ASTM D6216:
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< 2% Opacity
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24 Hour Drift:
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< 0.3% Opacity
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Long Term Drift:
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< 0.3% Opacity per month
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Voltage Variation per ASTM D6216:
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< 0.2% Opacity (over 85 - 265 V a.c.
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Thermal Stability per ASTM D6216:
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< 0.3% Opacity
(over -4 to +131º F / -20 to +55º C) range)
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Ambient Light Sensitivity per ASTM D6216:
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< 0.3% Opacity
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Insensitivity to misalignment:
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< 0.2% Opacity for +0.25 misalignment
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Environmental
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Operating Temperature:
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-4 to +131º F / -20 to +55º C)
(-40º F / -40º C with optional heater)
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Max. Flue Gas Temperature:
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1112º F / 600º C
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Max Flange Temperature:
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392º F / 200º C
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Outputs
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Modbus Interface:
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RS232 or RS485. Opacity, Dust, Optical Density, Status, Averaging and Range Information available.
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Analogue output:
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Two isolated 4-20mA current outputs. Independently configurable as Opacity, Dust Optical Density, Calibration Drift or OPLR.
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Relay outputs:
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System OK, Span calibration, zero calibration, Alarm 1, Alarm 2, Maintenance
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Options
Air Blower Units
Automatic Fail-Safe Shutters
Weather Covers
Control Room Unit
Alignment Tool
Calibration Filters
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