• US: (203) 294-5800
  • EU: +44 (0)1284 852 000

Who We Are:

SMD Fluid Controls makes vertically and horizontally mounted fluid switches, custom multilevel float sensors, combination level and temperature sensors, custom temperature switches, ultrasonic liquid level sensors, mechanical support sump switches, down hole submersible level sensors and optical liquid level sensors.

We Serve a diverse range of industries, including: Aircraft and Aerospace, Alternative Energy, Boiler, HVAC and Air Handlers, Breweries and Wineries, Chemical Processing, Food Processing, Industrial Equipment, Marine, Medical, Oil & Gas, Specialty Vehicles: ATV, Farm Equipment, Water and Wastewater, and Manufacturing.

We Offer standard off-the-shelf float switches for immediate purchase as well as custom designed liquid level sensors. We offer competitive pricing for OEM designs and applications. Our custom designs include machined level sensors and custom molded float switches in a wide variety of metals or plastics.

SMD Fluid Controls is a division of Strain Measurement Devices, a technically driven design and manufacturing firm dedicated to helping customers solve their toughest sensor and measurement problems. SMD’s talented staff has been designing custom sensors to measure force, pressure, temperature, weight, torque, liquid level and many combinations of these since 1978.


USA Location                                                      UK Location


We Take Pride In Our Business

Strain Measurement Devices: A world leader in specialty sensor designs. The company develops miniature load cells, strain gauge sensors, electronic flow measuring sensors, and more. SMD load cells are used in a wide variety of medical, industrial, aerospace, and other OEM applications.

Minimum Order Policy: SMD Fluid Controls has a $50 or Euro 50 minimum order policy and accepts many types of orders from single piece custom orders to blanket orders with “Kanban” releases. We accept credit card orders (MC, Visa, Discover, and AMEX) or POs with a credit reference, and offer quantity discounts.

Sales Terms and Conditions: All orders accepted by Strain Measurement Devices are subject to these Conditions of Sale. Conditions of Sale are the only terms or conditions upon which SMD sells or supplies the goods and they shall form part of and given every contract between Strain Measurement Devices…

Purchase Order Terms: Strain Measurement Devices’ Quality Terms and Conditions requirements apply to suppliers, including sub-tiers used by a supplier, providing purchased products or or processing services. Supplied products or processes shall conform to the latest revision level of the applicable drawing and specification unless…

Certifications & Regulations: ISO 9001-2008 is a rigorous independently certified set of standards for quality systems, maintained by ISO (International Standards Organization). SMD’s Quality Management System is supported and maintained by top management and fully understood and followed by all levels within the company…


Float Switch and Liquid Level Sensors

Whether you need an off the shelf float switch or a custom designed liquid level sensor, we can help! Strain Measurement Devices is a technically driven design and manufacturing firm dedicated to helping customers solve their toughest sensor and measurement problems. SMD’s talented staff has been designing custom sensors to measure force, pressure, temperature, weight, torque, liquid level and many combinations of these since 1978.

SMD Fluid Controls can design and manufacture a custom or standard float switch or liquid level sensor in many shapes and materials. Whether you desire an inexpensive plastic float switch or a rugged stainless steel multilevel liquid sensor, let us guide you to the proper solution. You can submit your project on line by selecting the customize button next to the float switch product that best meets your needs, and an engineer will contact you to finalize any required details. Our on line application notes may also be used to let you design your own cost effective float switch pump control.

For customers who demand replacement parts or a customized float switch or liquid level sensor, we offer competitive pricing for OEM designs and applications. If a multilevel float switch is what you require, select and configure your own part using our Multilevel / Custom product tab found on our web site. We can also design a machined level sensor or custom molded float switch in a large variety of metals or plastics.”