HFC-XX & HFC-SIDE-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

HFC-XX & HFC-SIDE-XX [Page37Bottom] shipping weight: 8 LB

HI-Volume Air Flow Calibrator,HFC-Series

The HFC-Series,HI-Volume Air Flow Calibrators,have eliminated the need for cumbersome orifice plates and water manometers.The HFC-XXC series units utilize a precision machined Venturi tube coupled with a pressure differential gauge giving a direct reading in the volumetric units of your choice (i.e.SCFM @stp).The unit is calibrated against an in-line N.I.S.T.traceable laminar flow element.The primary calibrator meets the requirements of MIL Std.45662A.HFC-XX series units are intended to be used open to air.

The direct meter read-out will indicate the flow in standard CFM,LPM,or CMM at standard conditions (29.92"of Hg and 70 º F)).Given actual sampling tempera- ture &barometric pressure during calibration,a technician can convert actual flow readings (i.e.ACFM)to standard units (i.e.SCFM)by making a simple calculation using look-up correction factors from tables given in the operating manual.

Depending on orientation at calibration (vertical vs.horizontal),HI-Q offers two HFC models:The HFC-XX is intended for high flow calibrations in the verticalplane,such as seen with the “HVP ” style high volume air samplers..Whereas HI-Q ’s HFC-SIDE-XX is intended for the calibration of low to high flow rates in the horizontal plane,such as seen with HI-Q ’s line of portable continuous duty and grab air samplers.

The HFC-XX series units have a standard 1 ½"male straight pipe thread (MSPT)which can be screw into most low to medium volume air sampling pumps (ie:HI-Q ’s,CF-1001 or CF-901 ).On higher volumetric flow samplers,a user must incorporate an adapter plate.With the use of HI-Q ’s FHA-4CF 4"diameter adapter disc,an operator is able to calibrate a unit with a 4"diameter filter holder assembly.The FHA- 810CF adapter plate is used to calibrate units with an 8"x 10"paper holder.

Ordering Information
Replace “XX ” with the uppermost desired flow rate..If a dual scale reading is required (i.e.both CFM &LPM displayed on one scale)replace “C ” with “DSC ” ((e.g.order:HFC-50DSC for 10-50 CFM &280-1500 LPM marked scale) High Volume,Single Range Air Flow Calibrators ranges be- tween 10-50 CFM (280-1500 LPM)

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