Chicago Sensor designs, manufactures and distributes liquid level sensors and switches for use in a wide variety of OEM applications. We stock large quantities of standard designs for common liquid level control applications and develop custom designs for unique applications. Our sensors are manufactured in ISO certified facilities and we can supply products with UL, CSA, NSF and other certifications to your requirements.

Our sensors are used in a broad range of industries and fluids and utilize magnetic reed, conductivity and ultrasonic technologies. Our focus is on original equipment manufacturers with a need for accuracy, reliability and cost-effectiveness in liquid management.

Madison optical sensors - no moving parts Our Madison optical level sensors are compact, accurate and can be mounted in a variety of locations and liquids. The tip of these compact switches incorporate a phototransistor that provides a digital output indicating the presence or absence of liquid. The design of the phototransistor is highly advanced and the sensor provides high reliability and cycle life in a compact switch. Metal and plastic housings are offered and a variety of mounting configurations are available. Ease of installation, maintenance-free performance and low prices make these switches are great value when technologically advanced liquid sensing solutions are required.

New Extended Threading Sensor Chicago Sensor's newest vertical-mount float switch offers flexibility in mounting for applications that require an extended length and the ability to adjust mounting height for different product configurations. The switch can also be used when your customers need to adapt your product to their individual level sensing requirements. The new design offers durable stainless steel construction with a float diameter of just one inch. Each switch comes with two hex nuts and two silicon o-rings. The stem features a 2.4 inch long threaded section which allows users to mount the switch high, low or at different heights from time to time to adjust to varying level-sensing objectives. The overall stem length is 4.9 inches. Contact us today for more information and mention product code FLT235A or see our Products area for more information on this and other Chicago Sensor level sensing solutions..

Whether your need is for one sensor to do testing in a prototype or ten thousand pieces per year at the best possible pricing, we are here to support you with our broad variety of in-stock products, specialized design services and technical advice. Our goal? Supporting Your Innovation™ with reliable, economical solutions.