Bulletin 873P Ultrasonic Sensors

The Bulletin 873P family is a new line of ultrasonic sensors designed for non-contact sensing of solid and liquid objects. Both standard and programmable models are housed in 18mm or 30mm PBT plastic barrels that meet IP67 enclosure standards.

Offered in three sensing ranges from 100mm up to 2500mm, the standard sensor models are available in three output styles: discrete (normally open, PNP), analog current (4-20mA), or analog voltage (0-10V DC). Discrete models have a potentiometer that is used to adjust the far limit of the sensing range such that the sensor will ignore background targets—a function also known as “ background suppression.”

Available with sensing ranges from 150mm up to 3500mm, the programmable 873P models are configured through the use of a setup pushbutton at the rear of the housing. These sensors have two programmable setpoints with sourcing (PNP) discrete outputs and an analog output. The discrete outputs can be set for either normally open or normally closed operation.

The analog output is either 4-20mA or 0-10V DC (depending on model) with the slope automatically scaled between the programmed setpoints. Both the standard and programmable models feature:

• Short circuit, overload, false pulse, transient noise and reverse polarity protection
• cULus listed and CE marked for all applicable directives

Target applications for the 873P include distance measurement, roll diameter measurement, web tension, broken web detection, level control (hoppers, tanks, sumps), and part detection, but 873P ultrasonic sensors are suitable for a wide variety of applications. Typical industries include automotive, material handling, packaging and food processing.