Gaseous or liquid fluid systems in hazardous locations demand the toughest pressure switches. These components must incorporate heavy-duty designs that offer exceptional accuracy despite harsh environmental conditions. They must also carry the right safety ratings, guaranteeing reliable operation in applications like offshore exploration and petrochemical processing.  Our 703-U and 703-UJ Series of UL-rated, explosion-proof pressure […]

Pressure switches for oil and gas facilities have to meet a set of challenging requirements. Not only should the switch provide exceptional accuracy and reliability, but it also must be suitable for use in hazardous locations—and carry the safety ratings to prove it. Our Model 703-U and 703-UJ explosion-proof pressure switches with piston actuation combine […]

Pressure switches are often considered commodity items. But for many mission-critical or demanding applications—including aerospace, pharmaceuticals and chemical processing—your switch may require a custom mechanical design or electrical features that go beyond what commercial off-the-shelf switches can offer. With a little extra engineering, you can boost the performance of your switch and even overcome challenges […]

Food, pharmaceutical and chemical processes often use tubular equipment to mix, transport or store materials. In these applications, it’s a good idea to keep any internal switches or sensors from protruding too far into the tube—where they can create a toehold for material buildup or impede flow. That’s where our newest pressure switch design comes […]

In hydraulic systems, cold start-ups often cause pressure switching errors that disappear once the system reaches its normal operating temperature. The culprit behind these false high pressure signals is increased fluid viscosity, which temporarily increases the differential pressure across the diaphragm or pressure sensing device. A thermal lockout mechanism based on a snap-acting, temperature-sensitive bimetallic […]

If your hydraulic systems suffer from pressure spikes, your pressure switches may not work as expected. The spikes can trigger the switch prematurely, even though continuous pressures remain below the set point. The result is a hard-to-control hydraulic system plagued by false switching signals. Fortunately, there’s a simple solution to these spike-induced switching errors: Just […]

With the release of our 745 and 785 Ruggedized Pressure Switches, we’re expanding our product line to help you better address low pressure applications that require high-sensitivity. 745 Pressure Switch. Our diaphragm-operated Model 745 Fixed Setting Pressure Switch is designed for low-pressure operations that require a compact form factor and high degree of sensitivity. Typical application […]

Our 784 Series of ruggedized pressure switches can now address more applications than ever, thanks to the addition of a compact 2-pin Deutsch option. Other than the change in connector, the pressure switch offers all the same performance characteristics as the original 3-pin Deutsch version. IP67-Compliant Pressure Switch. Whether 2- or 3-pin, the 784 pressure switch […]

Ruggedized pressure switches have a stable switching response and a long lifecycle in the face of temperature extremes, moisture, chemicals, vibration, shock and pressure spikes—the biggest threat of all. Our high quality switches have a number of design features that help withstand these spikes. Check out this video now.

Simple design principles for harsh operating conditions Ruggedized pressure switches play a critical role in failure-intolerant applications. At Sigma-Netics, we define rugged as a stable switching response and long lifecycle in the face of seven failure modes—pressure spikes, leaks, temperature extremes, moisture, chemical exposure, vibration and shock loads. Switches that can withstand these life-ending failure […]