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 […]
At Sigma-Netics, we’re excited to announce the launch of our brand new website, which has made it easier than ever for you to learn about our new line of pressure transducers. Thanks to the site’s sleek, user-friendly design, you can also explore our technical resources, configure your own sensing element, learn about our company and […]
Check out this quick overview of our SST 74X-UV Submersible Vehicle Depth Pressure Transducer. This compact, 90-gram model features shallow diaphragm sensors and a configurable flange design for outboard or inboard bulkhead installation. Units include an all-welded hermetic construction that resists shock and vibration. The SST 74X-UV Series is ideal for many demanding applications, including […]
The SST 64X-RT Series is ideal for a wide range of demanding applications—from satellite propulsion systems to reactor pressure management. Learn more about its features and specifications in our latest video.
As all of us confront the COVID-19 crisis, we wanted to let you know about the status of our operations. Sigma-Netics is an essential manufacturing business as a critical supplier in defense and medical supply chains. Both our New Jersey and Virginia facilities continue to operate—accepting new orders and shipping existing orders for pressure switches, […]
Recent growth in unmanned underwater vehicles (UUVs) across several industries is also creating a need for depth transducers that can satisfy unique sensing and instrumentation requirements. Not only must UUVs operate in difficult conditions, their designs are as varied as their missions. That’s why we introduced a depth measurement device for use with submersible vehicles […]
We’re pleased to announce we were recently awarded AS9100D approval for the design and manufacture of our pressure switches, pressure transducers, metal bellows and other products. Developed by SAE International, AS9100D is a globally recognized quality management standard for the aviation, space and defense industries and incorporates the latest ISO 9001:2015 requirements. The certification represents […]
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 […]
Temperature switching is another common use for metal bellows. The bellows are typically attached to a fluid-filled capillary. Changes in temperature cause the fluid to expand or contract, causing the bellows to move and actuate a switch, a gauge, or a valve. Bellows are found across many industries and are used extensively in thermostats, self […]
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 […]
Altitude-sensing aneroids play a crucial role in flight systems. But keep in mind that the aneroid will only be as good as the metal bellows or diaphragm capsule that serves as the pressure sensing element. Here’s a brief introduction to what you need to know about aneroid performance.
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 […]
You can’t begin to talk about metal bellows performance without considering manufacturing methods. All key performance parameters depend on the way the bellows is formed or welded. Let’s take a look at two of the most common manufacturing methods: seamless hydroformed bellows and seam-welded formed bellows. Seamless hydroformed bellows. As their name suggests, seamless metal bellows […]
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 […]
Metal bellows have long been a key component in demanding sensing and sealing applications. In fact, they’ve become so familiar that many engineers now think of bellows as generic items: Just specify a few key dimensions, pick a metal alloy and you’re good to go. The reality, however, is that not all bellows technologies are […]