UL, the famed safety certification company and Nationally Recognized Testing Laboratory, generally classifies industrial locations and workplaces into one of two designations: “hazardous location” and “ordinary location.” These designations help to determine the safety standards that different products must meet.
Float switches, among the devices covered by UL’s Standard for Industrial Control Equipment, are assessed based on a series of tests including immersion tests, dielectric voltage-withstand tests, tensile strength, and ultimate elongation tests, and insulation resistance tests.
If you’re looking for float switches or liquid level sensors that comply with UL’s Standard for Industrial Control Equipment in ordinary locations, SMD Fluid Controls has a variety of standard and custom solutions. Potential applications include waste oil recycling and recovery, medical device manufacturing, and food and beverage processing.
Custom Multi-Level Float Switches for UL Ordinary Locations
The FM10, FM11 and FM12 miniature multi-level float switches from SMD Fluid Controls are ideal for tank level detection in small or otherwise restrictive spaces.
Flange mount, bulkhead, or other custom fittings are available depending on your specific application, and the sensors can be mounted externally through 1” or larger NPT holes to sense multiple levels.
Stainless steel stems come standard, with steel, Buna, or plastic floats available to offer corrosion resistance and versatility across a variety of liquid media.
Miniature Stainless Steel Float Level Switches for UL Ordinary Locations
FS10 miniature stainless steel float switches, like their multi-level counterparts, are well-suited for small or restrictive tank level sensing, as well as applications where corrosion resistance is required.
Providing both Normally Open (NO) or Normally Closed (NC) operation with a 1” float and 50-watt switch, these top-mounted tank level sensors are the ideal choice for a wide variety of applications categorized by UL as “ordinary.”