Analog & Digital AFC-XX by Air Samplers, Air Sampling Systems, Air Pollution Sampling Instrumentation, Air Flow Calibrators, Air Flow Calibration Services, ANSI N13.1-1999, Annular Kinetic Impactors, Continuous Emissions Monitoring Systems (CEMS), Particulate Sampling Systems, PUF, Polyurethane Foam Samplers, Radio iodine Sampling Systems, Shrouded Probe, Stack Sampling Systems, Silver Impregnated Zeolite Cartridges, TEDA Impregnated Carbon Cartridges

Analog & Digital AFC-XX [Page36Top] shipping weight: 8 LB

Low & Medium Volume Air Flow Calibrators, Analog & Digital Displays
•Customizable-Simply replace “-XX ” with the flow range &units of your choice.
•Dependable-Direct,reliable readings certified &traceable to NIST.
•Quick-Standard quick disconnect fitting for airtight setups &immediate flow readings.
•Durable-Rugged construction built for heavy-duty use in all environments.

Air Flow Measurement Devices
HI-Q Environmental Products Company ’s steel constructed,two-component polyurethane painted Air Flow Calibrator (AFC)housings incorporate a precision machined venturi tube to create a pressure differential across a fixed orifice.By varying the air flow velocities,the pressure differentials are measured &recorded against a laminar flow element whose calibration is certified and traceable to the National Institute of Standards and Technology (N.I.S.T.).The AFC ’s overall internal simplicity of operation reduces the frequency of recalibration to once or twice per year depending on (individual)regulatory protocol.AFC-XX series air flow calibrators are intended to be used open to air.

AFC-Series Flow Ranges
By varying the orifice size and the chosen Magnehelic ® ((Standard AFC) or differential pressure sensor/transmitter (AFC-DIGITAL),HI-Q can fabricate calibrators in almost any desired flow range.Unlike other manufacturers,HI Q does not use pre-silk screened dial faces in their analog AFC units.HI-Q individually hand marks each AFC dial face.

Choosing an AFC-Series Flow Range
Flow vs.Pressure Differential produces a logarithmic (non-linear reading.On a Magnehelic ® gage the spacing between the numbers on the lower end of the scale will be close together and further apart on the upper end of the scale.For the greatest visual accuracy,HI-Q suggests,ordering a unit with the lowest upper range as practical (i.e.:don ’t select an AFC-8 if your pump only draws a maximum of 4 CFM).

For a "dual" scale operation, both LPM & CFM marked on one scale, replace the "AFC" portion of the part number and replace it with "DSC".
DSC-XX

Analog style AFC
Analog style AFC units house a Magnehelic ® differential pressure gage, whose relative volumetric flow rate units are transferred onto a direct reading scale.A reflective tape on the scale,behind the analog needle,reduces parallax error.Overall accuracy on analog AFC units is better than +/-5%.

Digital style AFC
Digital style AFC units house an LED display which employs advanced technology for stable,drift free,readout while incorporating features that provide flexibility now and in the future with Plug-in option cards available for alarm contacts,analog output,and serial communication.The AFC-DIGITAL ’s Rate/Total dis- play indicates air flow rate in Actual Cubic Feet per Minute (ACFM)and displays total volume sampled in Actual Cubic Feet (ACF).Metric calibration is also available.Accuracy:+/-1%full scale at calibration points.(15 points per standardcalibration).Contact HI-Q for Analog to Digital Conversion kits. "-DIGITAL"

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