Let’s spill the penal-tea: Yellow cards are traditionally not part of a goal-oriented team, but the UL Solutions’ Plastics Recognition Program Yellow Cards are a forward thinking solution to promote the safety and quality of your plastic products within the HVAC Industry.
Puns aside, the UL Solutions Yellow Card is a globally recognized, third party guarantee that your polymeric materials meet both regulatory and safety standards. Traditionally the UL Yellow Card is used by original equipment manufacturers (OEMs) to meet performance expectations of regulatory bodies and sometimes used as a low-maintenance marketing tool.Continue reading “Get Your Kicks with a Yellow Card”
Differential pressure between two rooms prevents dust, particulates, and pathogens from entering or exiting one room and going into the other. Depending on the relationship between rooms, one room will be under positive pressure when referenced against the other. This positive-negative pressure relationship between two spaces is the main idea behind clean rooms and isolation rooms. To ensure the differential pressure relationship is maintained, a measuring device must be used.
Room pressure monitors and room status monitors measure, display, and transmit the differential pressure reading between two rooms. In general, room pressure monitors only monitor differential pressure. On the other hand, room status monitors monitor differential pressure and additional parameters such as relative humidity, temperature, air change, or door status. They are both used in critical applications that require critical low differential pressure relationships. Continue reading “What are Room Pressure and Room Status Monitors?”
Motors are used for numerous industrial processes, be it moving air with a fan, pumping water with a pump, or driving a mechanical process. It is important to know when motors are not operating properly or require maintenance.
Many installations rely on a sensor or instrument used for the primary process, such as the use of a pressure transmitter to verify system pressure in a duct or the use of a flow transmitter to verify flow in a pipe. When errors or loss of pressure/flow are indicated, maintenance personnel may be dispatched to remedy the issue. However, this method does not indicate the root cause of an issue. Relying solely on primary process instrumentation opens the door to an unforeseen, possibly catastrophic situation. Continue reading “Benefits of Using Current Switches/Transformers”