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To contact us about OFS-2000W click here
  OFS-2000W Optical Flow Sensor [with AGC]

 • Full cross-stack/duct measurement for superior accuracy
 • Unaffected by distance & pressure, moisture or opacity.
 • Non-intrusive; nothing in flow path.
 • No flow media high temperature limits.
 • No calibration necessary
 • Built in continuous self-test diagnostics.
 • Easy installation and alignment.
 • No moving parts: operates unattended - 24/7/365.
 • Rugged ultra-low maintenance design for harsh environments.     

The OFS 2000-W model is equipped with Automatic Gain Control (AGC) to compensate for variations in opacity caused by particulate matter or moisture carried in the stack flow. The OFS uses EPA Method 14 optical scintillation technology with Digital Signal Processing (DSP) electronics to provide highly accurate, path-averaged air velocity measurements for Continuous Emissions Monitoring Systems (CEMS). OFS accuracy has been proven by U.S. National Institute of Standards (NIST) and at installations world-wide.


Partial List of Specifications
All OFS 2000 models are configurable for many different operating environments. For full specifications and available accessories click here


Measurement Technique Optical scintillation

Velocity Range 0.1 to 40 m/s velocity

Path Length 0.2 to 12 meters

Accuracy 2% of reading

Resolution 0.1 m/s

Response Time User selectable: 3 sec to 600 sec

Long Term Drift <1% >per year

Media Temperature No upper limit (for temp < 150F an activator heater may be required)

Light Source 670 nm red LED

Power Requirements 100-240 VAC, 50/60Hz (Transmitter 12VA, Control Enclosure 40VA)

Data Output 4-20mA and/or RS-232 ASCII serial I/O

Operating Temperature Range -40 to 140 F (-40 to 60 C)

Humidity 0 to 100%, Condensing

Dust Intrusion IP65

Mounting Flange 9" Dia. ANSI (150# 4” bolt pattern )

    To go to the OFS catalog page click here


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