F&J - Compact Digital Venturi Air Flow Calibrators

• Flow measuring device: Venturi
• Display of flow in CFM, LPM or M3/min. by operator selection
• Standard accuracy: ±2% Full Scale
• Flowrates displayed are corrected to a factory settable Reference Temperature and Pressure (4 options available)

Classical STP - 0° C - 1 Atm
Normal T and P - 20° C - 1 Atm
Modified Normal T and P - 70° F - 1 Atm
Standard Ambient T and P - 25° C - 1 Atm

• Display of barometric pressure in metric or English units
• Display of temperature in metric or English units
• Certified to UL, CSA and CE electrical safety standards
• Ambient or Reference flow is selectable by the operator
• 2 year warranty

Basic Line Power Models and Units with Battery Option

• 1% F.S. accuracy units available (add ‘-1’ to model number); example: CD-812E-1

Measurement Principle

• Flow Sensor: Venturi Tube
• Standardization: Correction for standard temperature and barometric pressure
• Curve linearization: Individually calibrated and software corrected

Measurement Ranges

• Air flow: See Table on front page
• Temperature: -4° F - +122°F (-20°C – +50° C)
• Barometric pressure: 30 – 24 In-Hg (760 – 609 mm-Hg)
• approx. Sea level to 6000 ft. elevation above sea level

Measurement Accuracy

• Air flow: ± 2% of full scale (Optional ± 1% of full scale)
• Temperature (Typical): 1ºC over range -4° F - +122°F (-20°C – +50° C)
• Barometric pressure: ± 1% over measurement range

Display

• 6 Digit LCD 0.4" high

Displayed Parameters and Resolutions

General