Have you ever thought about how air handling, warming, and cooling units work? Most don’t, and instead, take for granted that an air conditioner generates cool air, a filter takes out particles, or a heating system ensures your space is warm in winter.
However, the operation involves multiple types of sensors, which are responsible for monitoring air, carbon dioxide, and water levels. On a general level, these see how much air or liquid flows through, and if it doesn’t meet the required level, it can shut a system off or indicate a filter needs to be changed.
What can these sensors do?
Monitor Water Levels
HVAC systems often include several main and auxiliary pipes. Water passes through them, but if the level isn’t effectively monitored, a flood can result.
A sensor, in this regards, helps with:
- Identifying when the cooling unit isn’t draining.
- It helps shut off the system to prevent overflow.
- Halts the water flow, so it won’t damage the ceiling, floors, and walls.
Monitor Refrigeration Levels
In both refrigeration and HVAC systems, an IR liquid level sensor monitors all liquids involved in refrigeration, including carbon dioxide. Here, the sensor not only stops a flood from occurring but can also signal a leak.
Monitor Filters
Air systems involve several filters, and regardless of what’s being cooled or controlled, there’s always a chance your unit could become dirty or clogged. A technician, in these instances, needs to service the system, either by cleaning it out or replacing it entirely. A sensor, in this regard, indicates when too much dust and debris have accumulated. What happens?
- The sensor notices that the unit’s airflow has dropped below a recommended pressure point, indicating a clog is present.
- The sensor may shut off the system until the filter is replaced. In the process, this prevents it from overheating and potentially damaging the fan, duct, and dampers.
- Lets the technician know it’s not functioning properly.
Sensors from SMD Fluid Controls
SMD Fluid Controls offers a number of standard liquid level sensors for applications like these. For instance, the FS31 is a small polypropylene float switch ideal for condensate pan low-level detection in AC units. In addition to standard units like the FS31, SMD Fluid Controls can also create custom solutions for a near-endless number of applications and needs.