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Adapters for In-Line Calibration

Calibrator Adapter Fittings

Air Flow Calibrators are generally used to verify the displayed air sample flow rate accuracy of complete air sampling systems. Along with the air flow measuring device to be calibrated, it is recommended that a "Complete" system for calibration should also include the actual filter holder and filter media in order to duplicate realistic pressure drops experienced in a true sampling environment. The following adapters allow a technician to connect an Air Flow Calibrator at the end of (open to air) an "In-Line" High, Medium or Low Volume Air Sampling calibration set up.

Standard Calibration set-up, from right to left, (as shown in picture above) is as follows: 1.) Open to Air, 2.) Air Flow Calibrator, 3.) Calibrator Adapter Fitting, 4.) Filter Holder & Media, 5.) Flow meter to be Calibrated, 6.) Flow Control Valve, and finally 7.) Vacuum Pump.

Ordering Information

Choose In-Line Calibration Adapter Cone with reference to your filter media holder and male fitting included with your air flow calibrator. 

Paper Only Filter Holder In-Line Adapter Cones
Model Connects to Holder Type Quick Disconnect
RVPA-10-CA Paper Only, 2" Paper 3/8" Female QD
RVPA-15-CA Paper Only, 47mm Paper 3/8" Female QD
RVPA-2-CA Paper Only, 2" Paper 1/2" Female QD
RVPA-5-CA Paper Only, 47 mm paper 1/2" Female QD
CFPA-30-CA Paper Only, 2" Paper 1 1/2" FSPT
CFPA-35-CA Paper Only, 47mm 1 1/2" FSPT

Note: FSPT = Female Straight Pipe Thread (CF-Series Holders & Adapters)

Combination Filter & Paper Holder In-Line Adapter Cones
Model Connects to Holder Type Quick Disconnect
RVA-10-CA Combination, 2" Paper 3/8" Female QD
RVA-15-CA Combination, 47mm Paper 3/8" Female QD
RVPA-2-CA Combination, 2" Paper 1/2" Female QD
RVPA-5-CA Combination, 47mm Paper 1/2" Female QD
CFA-20-CA Combination, 2" Paper 1 1/2" FSPT
CFA-25-CA Combination, 47mm Paper 1 1/2" FSPT

Note: FSPT = Female Straight Pipe Thread (CF-Series Holders & Adapters)

P/N: FHA-AKI-4CF

This In-Line Filter Holder Adapter is used to encapsulate an "AKI" during calibration. Leaving the AKI in place during the calibration procedure ensures a representative pressure drop under normal operating conditions. Fittings:  4" Diameter Female Thread Downstream X 1.5" Diameter Female Straight Pipe Thread Inlet.

Calibration Adapter Plates (High Flow)

HI-Q Environmental Products Company's "FHA-Series" adapters are designed to reduce overall pressure drop found during the calibration of standard 4" diameter and 8" x 10" filter paper sampling applications. The FHA's unique design reduces the overall paper to adapter fitting contact, thereby allowing the maximum obtainable free cross-sectional surface area through which unrestricted air can pass. This is done to duplicate the conditions of ambient air, open face, sampling procedure's and to reduce the overall error in calibration.

Ordering Information

FHA-4CF

4" Dia. Disc x 1½" Female Straight Pipe Thread.

FHA-810CF

8" x 10" Plate x 1½" Female Straight Pipe Thread.

FHA-810X810

In-line 8" x 10" filter holder adapter with minimal flow disturbance. Assembly includes one inverted standard 8" x 10" holder complete with two mounting rails and a foam gasket. Filter holder inlet: 1½" female straight pipe thread.