Fluid-Detecting Sensors

Sept. 15, 2005
OPB350 Series of fluid sensors have large (0.187 and 0.250 in.) OD tubing.

A plastic housing protects the sensors and provides a robust connection to PC boards. The devices use an infrared LED/phototransistor pair to measure changes in the refractive index as an infrared signal passes through the tube and liquid. The sensor generates an output signal that can be read by external reference circuitry to describe multiple output states, such as: "fluid present," "no fluid present,'" or "no tube present," as well as specialized functions like bubble detection. This gives a reliable method of detecting the presence or absence of fluids in clear tubing without a break in the tubing or the need to make contact with the fluid. Operating temperature for the sensors range from 40 to 85°C.

Optek Technology, 1645 Wallace Dr., Carrollton, TX, 75006 (972) 323-2200, optekinc.com

Sponsored Recommendations

The entire spectrum of drive technology

June 5, 2024
Read exciting stories about all aspects of maxon drive technology in our magazine.


May 15, 2024
Production equipment is expensive and needs to be protected against input abnormalities such as voltage, current, frequency, and phase to stay online and in operation for the ...

Solenoid Valve Mechanics: Understanding Force Balance Equations

May 13, 2024
When evaluating a solenoid valve for a particular application, it is important to ensure that the valve can both remain in state and transition between its de-energized and fully...

Solenoid Valve Basics: What They Are, What They Do, and How They Work

May 13, 2024
A solenoid valve is an electromechanical device used to control the flow of a liquid or gas. It is comprised of two features: a solenoid and a valve. The solenoid is an electric...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!