Overfire air is one of several techniques used to reduce NOx emissions in boiler systems used in the Power industry. Optimized combustion with air supplied through over-fired air ports located above the top burners is how this is achieved. There may be very limited straight run available between the windbox and the overfire air ports. Air Monitor manufactures airflow measurement solutions designed to accurately measure dirty airflow – even when there is little to no straight run available - with the AUTO-purge III that automatically prevents debris from clogging airflow measurement stations.
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CEM Systems
Continuous Emissions Monitoring (CEM)
System compliant to meet 40 CFR Part 75 data reporting requirements.
Flow, Temperature, ABS Pressure, Purge, Reporting
- In-stack flow measurement
- Accuracy: 3% of actual flow
- Companion mass flow transmitter
- Automated pneumatic purging
- 40CFR75 Compliant
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AUTO-purge III
Automated Air Purge System
Electro-pneumatic system automates sensing port debris purging for low maintenance dirty airflow measurement.
Companion System
- Add to flow and transmitter pairings
- Automated pneumatic purging
- Field-selectable purging intervals
- Maintains flow system performance
- Trouble-free operation
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AUTO-purge III/CEM
Continuous Emissions Monitoring (CEM) with Purging
Electro-pneumatic system automates sensing port debris purging for low maintenance CEM.
Companion System
- Add to flow and transmitter pairings
- Automated pneumatic purging
- Field-selectable purging intervals
- Maintains flow system performance
- Trouble-free operation
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CA Station
Inline Airflow Measuring Station
Differential pressure Pitot airflow traverse array in rectangular & circular constructions for combustion airflow.
0 to 8,000 FPM
- Accuracy: 2-3% of Actual Flow
- Circular/Rectangular; fabricated to any size
- Temperature: ≤800°F
- Carbon steel, Stainless steel
- Built-in flow conditioning
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CAMS™
Combustion Airflow Management
System designed to monitor combustion airflow and purge debris from sensing ports.
Integrated System
- Accuracy: 0.1%
- Temperature and pressure compensated
- Automated pneumatic purging
- Add to flow measurement pairing
- Trouble-free operation
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MASS-tron II/CEM
Continuous Emissions Monitoring (CEM)
System of mass flow products compliant to meet 40 CFR Part 75 data reporting requirements.
Flow, Temperature, ABS Pressure, Reporting
- Add to flow measurement pairing
- Companion mass flow transmitter
- Flow/Differential Pressure Calculator
- 40CFR75 Compliant
- Fully compensated mass flow
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VOLU-probe/SS
Insertion Airflow Measuring Probes
Stainless steel airflow traverse probe ideal for dirty applications with corrosive, abrasive, and extreme temperatures.
400 to 10,000 FPM
- Accuracy: 2% of Actual Flow
- Temperature: ≤900°F
- Stainless steel, Hastelloy, Inconel, Kynar
- External or Internal mounting
- Easy installation/removal for maintenance
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STACK-probe
Insertion Airflow Measuring Probes
Airflow traverse probe for stack flow monitoring typical for Continuous Emissions Monitoring (CEM) systems.
400 to 10,000 FPM
- Accuracy withing 40CFR75 specs
- Temperature: ≤900°F
- Stainless steel, Hastelloy, Inconel
- 4” or 6” 150lb Flange connections
- Cantilevered construction / installation
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VELTRON DPT-Plus
Multivariable Transmitter
Measures differential pressure and process temperature providing output of calculated mass flow.
Flow, Temperature, or Differential Pressure
- Accuracy: 0.1%
- URL down to 0.05” w.c.
- NEMA 4X
- Class I Div 1, Class II Div 1
- 24VAC, 24VDC
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VELTRON II
Transmitter
Measures differential pressure providing output of differential pressure or volumetric flow.
Flow or Differential Pressure
- Accuracy: 0.1%
- URL down to 0.05” w.c.
- NEMA 1, optional NEMA 4 and 4X
- 24VAC, 24VDC
- Turndown: 100:1
