F&J - Digital Laminar Flow Element Calibrators for Air Samplers

• Differential Pressure Flow Sensor
• Display of flow in CFM, LPM or M3/min. by operator selection (LED display)
• 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 temperature in metric or English units
• Portable battery operated unit is available
• Certified to UL, CSA and CE electrical safety standards by ITSNA (formerly ETL or Edison Testing Laboratories)
• Ambient or Reference flow is selectable by the operator
• 2 year warranty

• Battery Powered Operation (Denoted by ‘B’ in model number)
• 1% F.S. accuracy units available (add ‘-1’ to model number); example: D-812E-1
• Actual Flow/STP Flow Display (Denoted by A/S in model number)

Measure 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): 1°C over range -4° F - +122°F (-20°C – +50° C)
• Barometric pressure: +/- 1% over measurement range

Display 6 Digit LCD 0.4" high

• Calibration : Factory calibration is recommended once per year