The DucTester Field Verification Plate gives you the means to check your system calibration in the field, to make sure it is performing at top accuracy. The plate has a nozzle to connect a pressure reference and is meant to be attached to the end of the flex duct. Knowing the size of the hole in the plate, the tester can run the fan, and measure the hole flow. Comparing the result will indicate if the system is within parameters, and can give an indication when the system may need to be sent back to the factory for formal re-calibration.
The field calibration plate is compatible with Retrotecs 200 and 300 series fans duct testing system. The field calibration plate is completely compatible with the Minneapolis DuctBlaster(R).
The DucTester Quickguide and Manual include a section on using the field verification plate to check the system.
Thedepressurization testis the same as the pressurization test, except the flex-duct is mounted on the Duc-tester inlet.
If the measured flow of your Duc-tester is less than 97CFM orgreater than 106 CFM, our problems checklist will help you to determine a resolution.