Stevens Water Monitoring Systems, Inc. - Portland, OR
Distributor, Manufacturer
Distributor of luminescence sensors or analyzers for monitoring dissolved oxygen. Sensors are available with 0 mg/L to 60 mg/L measurement range & 0.01 mg/L resolution.
Brand Names: Hach

Emx Industries Inc. - Cleveland, OH
Manufacturer
Manufacturer of luminescence, color, diffuse reflective, fork, frame, multi, retro reflective, thru beam, transparent, optical fiber, panel mount, door & reed contact sensors.

Wenglor Sensoric LLC - Beavercreek, OH
Manufacturer
Manufacturer of luminescence reflex sensors. Features of luminescence sensors include teach-in, dynamic teach-in, external teach-in, key potentiometer, digital read-out of intensity values via the RS-232 interface, working range from 16 mm to 20 mm, 18 mm working distance, UV light source, 380 nm wavelength, max. ambience light of 10,000 lux, response time of 200 micro-s, short circuit & reverse polarity protection, RS-232 interface, 2 digital inputs, 38400 Bd baud rate, 2500 Hz switching frequency, & 3mm light spot diameter. Accessories include mounting brackets & serial interface adapters.
Brand Names: Wenglor

Pilz Automation Safety L.P. - Canton, MI
Manufacturer, Custom Manufacturer, Service Company
ISO 9001 certified worldwide manufacturer of luminescence, light & through beam sensors including light curtains & barriers. Features include built-in muting function, dimensions including 35 mm x 40 mm, 2 to 4 beams with resolution up to 30 mm & supply voltage up to 24 Vdc. Light curtains can be used for finger, hand & body protection & safety barriers for production machines, presses & punch machines, processing centers, robot system assembly lines, transport & conveyor systems as well as wood, leather, ceramics & textile processing machines. Meets IEC/EN 61508 standards. Can be used in applications in accordance with category 2 & category 4 of EN 954-1.