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Ultrasonic position sensors for hydraulic cylinders

BALLUFF BFD ultrasonic sensors monitor position in short-stroke hydraulic cylinders. The versions offered work in the range 0–80 mm and enable data transmission via IO-Link.

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Position measurement in a short-stroke hydraulic cylinder

The BALLUFF BFD series is designed for position monitoring in hydraulic cylinders with a short stroke. Continuous position information helps check clamping, working movement or return of the mechanism. The assembly design is based on the cylinder design, working stroke and conditions of the hydraulic system.

BALLUFF BFD0001 – ultrasonic hydraulic cylinder position sensor with cable and connector
BALLUFF BFD0001 for position monitoring in a short-stroke hydraulic cylinder.

Range 0–80 mm and connection to the control system

In this category you will find BFD0001, BFD0002, BFD0003 and BFD0007. The variants offered have a measuring range of 0–80 mm; when choosing, compare in particular the cable and connector version.

The IO-Link interface enables the transmission of process and diagnostic information. For BFD0001, the manufacturer also states a switchable analogue output 0–10 V / 4–20 mA and configurable switching functions. Choose the specific mode and pin assignment according to the variant and the control input.

Data for selection or service replacement

  • Hydraulika: working pressure, medium and temperature. For BFD0001, the manufacturer states a maximum pressure rating of 350 bar.
  • Mechanika: cylinder drawing, mounting space, required stroke and sensor position.
  • Accuracy: required repeatability and permissible measurement deviation.
  • Electrical interface: supply, IO-Link master or analogue input and the complete connector wiring.

Can this sensor be used to measure distance in air?

The BFD series is designed for hydraulic cylinders. For another method of measurement, a sensor intended for the given environment and mounting must be chosen.

Technical documents: specifikace BALLUFF BFD0001.

Selection questions

Which BALLUFF BFD variants are offered here?

BFD0001, BFD0002, BFD0003 and BFD0007 for the range 0–80 mm with IO-Link interface. When choosing, compare the cable and connector version, mechanical integration into the cylinder and the documentation of the exact variant.

Is an identical measuring range of 0–80 mm enough for a replacement?

Also compare the cylinder design, mounting, hydraulic conditions and control interface. An identical range does not prove identical connection or pin assignment; the basis is the complete order code and the assembly drawing.

Selection and technical consultation

For selection or replacement, send the complete order code and a description of the application. TECHNOLINE technical support will help compare the required version.

Related: All special ultrasonic sensors · Sensor Cables and Connectors.

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