KOBOLD SMN variable area flow switches are used when extremely low flow switching points are required in combination with minimum pressure loss at high flow rates. Typical applications include the control of water and cooling circuits, high pressure cleaning devices, control of contaminated media in effluent and heating systems and a wide variety of other flow control systems. The liquid flow switch, with all-metal wetted parts, works on the float principle. However, it does not use the standard conical metering tube or slotted measuring nozzle. Instead, a float with an integral magnet is suspended within a cylindrical measuring tube. The float is moved by the flow stream against the magnetic field of an opposing magnet mounted in the top of the instrument. The magnetic field produced by the float activates a reed contact at the switch point. The reed contact is mounted on the outside of the SMN liquid flow switch body. The special construction of the switch’s float and flow tube means that only a low flow is required to raise the float and thus close the contact. When the float reaches the top of its travel, an additional flow path opens, allowing high flow rates without a significant increase in pressure loss. When the flow is interrupted, the float is moved back down the flow tube by the opposing magnetic field and the contact opens.
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We are a value-driven global manufacturer of process and control instrumentation. Since 1980, we have offered one of the most comprehensive lines worldwide; consisting of flow, level, pressure, temperature, and more.
Here in our Pittsburgh-based US headquarters, we manufacture, sell, and support high-quality solutions for countless industries and applications.
Our passion is partnering with you to measure what matters and producing the finest products to do so.
Thank you for considering us as your application solution partner.
KOBOLD is proud of our products, our people, and our processes that enable us to provide ideal application solutions and an unrivaled buying experience whether you are an end-user, OEM, or engineering firm.
KOBOLD is a fast-growing employer of choice, focused on team empowerment, employee engagement, and an exceptional work experience.
We are proud to have team members that have been with us for decades who can provide you with a wealth of industry, application, and product knowledge.
Our products are well-known for their quality, reliability, longevity, Innovation, and long-term value. Backed by German engineering and US manufacturing, our solutions remain cost-competitive even though they are not mass-produced.
Many of our products were created in partnership with customers who were unable to find a solution elsewhere and we can do the same for you.
Finding the right process instrumentation doesn’t have to be intimidating. Because we make, sell, and support our products, we provide a guided, streamlined, and efficient experience that is built around your needs and our knowledge. We partner with you as much as you want, every step of the way.
Many manufacturers with limited product lines force a fit between their product and your application, often leading to over-specified and over-priced recommendations. Our comprehensive product line allows us to tailor the product to your application, not the other way around. We approach your product selection with a focus of integrity, not profit.
