The product features include thermal dispersion flow and temperature sensors; factory-calibrated controller in nonvolatile, erasable, programmable, read-only memory; and factory-mounted 24-V modulating actuators.
The DAFA can monitor radon mitigation systems by detecting a loss of airflow in the pipe and providing a signal to the homeowners if the fan has stopped operating.
Several months ago, I wrote a Duct Dynasty article titled “Four Steps to Optimize a Duct System.” Since then, I’ve received numerous requests to expand on the simple calculations I mentioned that can help you estimate room airflow with a customer’s input.
The air duct calculator, or “ductulator,” is a commonly used tool for designing and installing duct systems. Unfortunately, many designers and technicians receive limited instructions on its correct use.
Last year was a notable one for Testo Inc. as the test and measurement manufacturing company celebrated its 60th anniversary. However, 2018 promises to be just as momentous as Testo US will reach its 35th anniversary milestone.
One of the most effective ways to measure airflow is through a method known as a traverse. While a traverse offers an accurate means of determining airflow, it is rarely used by HVAC professionals due to its intimidating nature.
To understand the operation of combustion air openings, it’s a good idea to review some airflow basics. For airflow to move through a duct, there must be a pressure difference across it created by an external source. Traditional installations depend on natural forces to create this pressure difference.
These thinline stationary louvers can be used for interior and exterior applications where a high, free area for improved airflow is required or when narrow frame depth and horizontal sightlines are desired.