OFS-2000 Optical Flow Sensor
for Emissions Compliance and Process Performance Monitoring

The OFS-2000 stack/duct flow velocity sensor for Continuous Emissions Monitoring Systems (CEMS) uses EPA - approved Method 14 optical scintillation technology. Optical scintillation technique uses advanced Digital Signal Processing (DSP) electronics to measure the movement of turbulence found in a gaseous flow stream to provide highly accurate, path-averaged air velocity measurements. OFS accuracy has been proven by the U.S. National Institute of Standards (NIST) and at customer sites world-wide.

Download our OFS-2000 Optical Flow Application Form to receive a quote including installation at your site.

• 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.

General Specifications
Measurement Technique: Optical Scintillation
Velocity Range: 0.1 to 40 m/s velocity
Path Length: 0.3 to 10 meters standard (Consult OSI for other ranges)
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 < 150°F 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)
Dimensions (rack mount): 19.02"W x 5.08"H x 12.8"D
Weight:13.23 lbs.

On-Site Maintenance & Field Services
AMP-Cherokee offers total coverage of warranty repairs and ongoing maintenance. Our service include:
Factory Warranty Repairs
27x7 Emergency Response
Scheduled Maintenance
Parts and On-site Repairs

Contact AMP-Cherokee today at 800.399.4236 or sales@ampcherokee.com
for a free consultation on your opacity compliance monitoring and process performance needs.
OFS-2000 Optical Flow Sensor OFS-2000 Data Sheet Optical Flow OFS-2000 Application Form