CIH Equipment’s flow hood laboratory calibration station is configured to mimic actual field conditions with a supply and a return side and using pitot tube traverse measurements. Commentary regarding flow hood accuracy issues is discussed in ASHRAE Standard 111 (ASHRAE 1988. Other laboratories testing procedures do not account for approach errors and that most diffuser measurements are not reliable. They recommend a pitot tube traverse to field calibrate the flow to account for these problems. CIH Equipment’s calibration procedures create the ideal situation to account for actual field conditions.Custom designed flowhood calibration systems for both low and high volume air measurements. Your flow hood is compared against our reference standard under the most accurate and realistic conditions, with both a supply and return register.
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