One of the most common myths about nodules is the diagnosis itself! Usually doctorâs donât have the necessary equipment (stroboscopy) to diagnose vocal problems. So all problems are called nodules. Every singer has a colleague who had ânodulesâ for this reason.
An RTU is a type of AHU. AHU stands for Air Handling Unit and the acronym RTU means Rooftop Unit. The Roof Top Unit is an outdoor AHU. As RTUs are mounted on the roof, there is no concern about creating extra space indoors for it as would be the case for the other types of AHU.
An RTD is a device which contains an electrical resistance source (referred to as a. âsensing elementâ or âbulbâ) which changes resistance value depending on itâs. temperature. This change of resistance with temperature can be measured and used to. determine the temperature of a process or of a material. RTD sensing elements come in two basic styles, wire wound and film. Wire wound elements.