The KOBOLD NWS Vibrating Fork Level Switch is compatible with non-coating and some coating media with viscosities up to 5,000 cSt. Sample application media includes oils and foamed oils, water, paints, transparent inks, sauces, milk, and liquids with carbon dioxide. It also suitable for sterile or hygienic applications and CIP cycles up to 300 °F. The NWS can be set as an upper or lower limiter with the integral mode selector. It also features an LED output state status indicator.
The NWS Vibrating Fork Level Switch works on the vibrating fork principle. A piezoelectric crystal is matched to the frequency of the tuning fork in air and is used to set the fork vibrating. When the fork is immersed in liquid, its resonant frequency changes. The piezoelectric crystal is then no longer matched to the tuning fork, which causes the vibration to stop. The NWS’s internal electronics detect this change and signal an alarm condition.
The switching logic is easily toggled between N/O and N/C through an internal switch. The NWS is available with a solid-state switch that may be used in a 2-wire or 3-wire mode. The 2-wire configuration can switch loads up to 240 VAC at 0.5 amps, while the 3-wire system switches a DC voltage when activated.
KOBOLD also offers the compact NWP Plastic Vibrating Fork Level Switch that is ideal for more aggressive media.
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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.
