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 the industrial instrumentation partner of choice with comprehensive solutions for measuring what matters to you.
For over 40 years, KOBOLD has been a value-driven leader in process measurement and control solutions. We offer one of the industry’s broadest lines of sensors, switches, and transmitters to measure and control flow, pressure, level, and temperature.
We offer excellence in engineering, high value products, and exceptional customer partnerships that last beyond the sale. Because we design, manufacture, sell, and provide support for our products, you can be assured that you and your application are in expert hands.
We aren’t just interested in selling you instrumentation. You are our priority. Trying to wade through the extensive technologies and options can be a bit intimidating. You don’t have to figure it out on your own. We are here to partner with you, providing free advice from our in-house engineering experts who have decades of collective experience.
We are old-fashion in our beliefs about what doing business should look like. We still have someone answering our phone who will quickly direct you to the right person. We still believe in delivering true value and not subpar quick-fix products that become headaches down the road. We build our products like we build our relationships, for the "long haul".
For certain large-scale projects, we are also able to provide demo instrumentation so you can be confident that our solution is the right fit for your application. We want our products to be the best fit as much as you do. There is no project too large or too small for us.
We believe that "Made in the USA" still means something. Our products are built with that in mind as we aim to exceed the standards and ideals of quality-focused US manufacturing. We offer the best of both worlds. German engineering is still known as being among the finest and we are proud to build some of the most innovative products in the world. We are also focused on sourcing practices that allow us to provide higher quality components, shorter lead times, and longer lasting products than other instrumentation manufacturers.
We offer one of the industry’s broadest lines of sensors, switches, and transmitters to measure and control flow, pressure, level, and temperature.
We have historically set the bar for innovation and excellence, helping to shape the field of industrial instrumentation into what it is today. Our technologies offer a solution-oriented way to control the most diverse and complex variables and can be easily integrated into a wide variety of systems in many industrial and commerical sectors.
We will not try to sell you any instrumentation that isn’t ideally suited for your application. Because we are unique in the extensiveness of our product line, we don’t have to try and “force a fit” just to make a sale like other companies with limited product lines. In the event we do not have the right solution, we will do our best to point you in the right direction.
While we offer a wide variety of standard instrumentation, we are also able to handle unique, difficult, or challenging applications that others can not. Our familiarity with exotic materials allows us to offer solutions for variables that are frequently hard to accommodate. Because we are the manufacturer, we also have the flexibility of being able to provide customized solutions in certain circumstances, based on the exact application needs.