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SPECIFICATIONS |
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Measuring |
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Technique: |
Cross stack, double pass / path transmissometry |
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Operating Wavelength: |
520 ±20 nm |
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Light Source: |
High Intensity LED |
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Range: |
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: |
±2% Opacity |
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Linearity: |
< 2% of range |
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Resolution: |
0.1% Opacity; 0.001 Optical Density;
0.1 mg/m3 Dust |
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Suitable for stack diameter: |
0.6 to 25 m / 2 ft to 82 ft |
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Installation pathlength: |
0.97 m to 25 m/ 3 ft to 82 ft |
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Calibration: |
Automatic zero and upscale calibration
(Selectable interval 1 to 24 hours in 1 hour steps)
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Response Time: |
< 10s
(< 2s with no damping) |
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Calibration Error per ASTM D6216: |
< 2% Opacity |
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24 Hour Drift: |
< 0.3% Opacity |
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Long Term Drift: |
< 0.3% Opacity per month |
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Voltage Variation per ASTM D6216: |
< 0.5% Opacity (over 85 - 265 V a.c.) |
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Thermal Stability per ASTM D6216: |
< 2% Opacity
(over -20 to +55°C/ -4 to +131°F range) |
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Ambient Light Sensitivity per ASTM D6216: |
< 2% Opacity |
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Insensitivity to misalignment: |
< 1% Opacity for ±0.25° misalignment |
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Environmental |
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Operating Temperature: |
-20 to +55°C / -4 to +131 °F
(-40 °C / -40 °F with optional heater) |
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Max Flue Gas Temp.:
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600 °C / 1112 °F
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Max Flange Temp.: |
200 °C / 392 °F |
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Indicators: |
System OK, Alarm 1, Alarm 2, Zero Calibration, Span Calibration
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Outputs |
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Modbus Interface: |
RS232 or RS485. Opacity, Dust, Optical Density, Status, Averaging and Range information available |
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Analogue output: |
Two isolated 4-20mA current outputs.
Independently configurable as Opacity, Dust Optical Density, Calibration Drift or OPLR |
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Relay outputs: |
System OK, Span calibration, zero calibration, Alarm 1, Alarm 2, Maintenance
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Options |
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Air Blower units |
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Automatic Fail-Safe Shutters |
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Weather Covers |
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Control Room Unit |
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Alignment Tool |
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Calibration Filters |
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Continuous Product Development may make it necessary to change these details without notice.
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