Certified by 3-A and EHEDG (European Hygienic Engineering and Design Group) to meet sanitary design standards, these switches detect levels of air, foam, liquid, and solids in tanks and pipelines. They’re often used in brewery, food and beverage, and pharmaceutical environments to trigger pumps and valves in automated lines. In order for liquids and solids to be detected, they must have a dielectric constant of at least 1.5.

Rated IP69K and IP67 to handle rigorous cleaning processes, these switches withstand high-temperature, high-pressure washdowns and can be submerged in water for up to 30 minutes. The switch body is stainless steel, so it won’t corrode from frequent washdowns with harsh cleaners and sanitizers. The switch probe is PEEK, so it stands up to chemicals and high temperatures. It also meets USP Class VI standards, which means it has passed tests to confirm it’s a plastic that won’t leach into samples. Any parts that contact liquids are polished to an extremely smooth finish to prevent bacteria growth.

These switches have a multicolored LED indicator—program the different colors to signal the media they will detect. Manually program them with a button on the switch. You can also connect them to a computer with M12-A, 4-pin connections. Programming these switches remotely makes it easier to measure media levels in hard-to-reach spots. They’re compatible with IO-Link and 4-20 mA analog outputs, so you can use them in existing systems. They meet U.S. and Canadian safety standards.

Use a quick-clamp adapter to connect these switches to quick-clamp sanitary tube fittings on your line.

For technical drawings and 3-D models, click on a part number.

Like other 3-A certified sanitary pressure switches, these switches trigger controls and alarms when food-processing, pharmaceutical, and biotech lines reach a set pressure, but they also have a sanitary adjustable setpoint ring that you twist to make quick changes. They have a sleeve to shield their internal parts from water and other contaminants that could produce bacteria. To further prevent bacteria from growing, as well as make cleaning easier, the surfaces of these switches are polished and their seams are continuously welded. Made of 316 stainless steel, they stand up to harsh cleaners and sanitizers without rusting. They’re rated IP67 and NEMA 6, meaning they’re protected against dust, dirt, corrosion, and temporary submersion. All have a flange that connects to sanitary quick-clamp fittings (also known as tri-clamp fittings); they’re easy to connect and remove from your line.

Their quick-clamp end has a 316 stainless steel diaphragm that protects these switches from corrosive substances and covers threads to keep bacteria from growing in them. The diaphragm is filled with 99.5% pure USP food-grade glycerin, reducing the risk of contamination if the diaphragm fails. To access the material certificate with traceable lot number and test report, the diaphragm is laser etched with its serial number—the etching leaves minimal room for bacteria to grow.

These switches are single pole, double throw (SPDT), so they switch one circuit on and off. Wire them normally open (NO) or normally closed (NC).

For technical drawings and 3-D models, click on a part number.