Magnetostrictive Sensors

BTL magnetostrictive linear position sensors in profile housing

Maximum flexibility with installation and use

These magnetostrictive linear position sensors with a profile design are contact-free and absolute measurement systems for the precise detection of one or more positions. They deliver convincing performance in harsh environments, for example in presses, injection molding machines or gantry robots, because they are made of a hermetically sealed IP67 aluminum housing. The magnets of the position encoder act on the measurement element through the wall of the aluminum profile.

Features

• High resolution of up to 0.5 µm
• Measuring lengths up to 7620 mm
• Measures several positions and speeds at the same time
• Contact-free, therefore wear-free – no downtimes, long service life
• Easy system integration via a range of interfaces – e.g., IO-Link, Profinet, EtherCAT, SSI and analog
• Programmable output signals – invert, configure and document the measuring range
• Three housing variants for flexible and fast installation depending on the space requirements and application
• Floating and captive encoders

BTL magnetostrictive linear position sensor for industrial hydraulics

Pressure-resistant measurement systems for a variety of cylinder applications

The most important application for our magnetostrictive linear position sensors in rod design is in hydraulic drive units. They are exceptionally well-suited for use in hydraulic cylinders for position feedback, for molding lines and rolling mills or in wind power applications. Because the sensors are installed in the pressure area of hydraulic cylinders, they have to have the same pressure resistance as the cylinder itself. The measurement element is installed in a pressure-tight tube made of non-magnetic stainless steel. The flange seals the high pressure area using an O-ring. The electronics are integrated in a protective housing outside of the cylinder on the mounting flange.

Features

• nHigh resolution of up to 1 µm
• Measuring lengths up to 7620 mm
• Measures several positions and speeds at the same time
• Programmable output signals – invert, configure and document the measuring range
• Flexible installation with various thread types
• Contact-free, therefore wear-free – no downtimes, long service life
• Expanded measuring possibilities with multi-magnet technology
• Easy system integration via a range of interfaces – e.g., IO-Link, Profinet, EtherCAT, SSI and analog

BTL magnetostrictive linear position sensors for extreme environments

Cylinder feedback systems for the toughest environmental conditions

Whenever you need to measure with absolute precision, you can count on the rugged linear position sensors from Balluff. These systems are made completely of stainless steel and are designed in protection classes up to IP69K or for high pressure cylinder applications up to 1000 bar. This guarantees you the highest degree of reliability and precision, even under the most extreme ambient conditions.

Features

• Rugged stainless steel housing
• Exceptional resistance to shock and vibration
• Extreme waterproofness, IP69K
• Temperature range of –40 to +85 °C
• High-pressure resistant rated to 1000 bar
• Resolution of up to 1 µm
• Measuring lengths up to 7620 mm
• Contact-free and therefore wear-free – no down-times

BTL redundant magnetostrictive linear position sensors

Maximum system availability and safety, even in harsh environments

Our multiple redundant position measurement systems meet the highest requirements for security and availability, even in harsh environments, for example, when used in safety-relevant valves and hydraulic cylinders. They offer up to three independent measurement systems in the same housing and thereby ensure increased safety during operation. The different interfaces enable diverse redundancy.

Features

• Double- or triple-redundancy design
• Temperature range of –40 to +85 °C
• Analog and digital interfaces
• Flexibly adjustable measuring range and signal inversion via software
• Settings can be copied to all three measurement channels
• Durable thanks to rugged mechanical construction
• Contact-free and therefore wear-free

BTL magnetostrictive sensors for explosion hazard areas

Pressure encapsulated linear position sensors for ex zones

For use in ex zones 0 and 1 we offer pressure encapsulated rod styles with various performance profiles. Depending on the application, you can choose variants for areas with gas or dust hazards. Magnetostrictive sensors are also available for Zone 2. Rugged and pressure encapsulated versions with easily and quickly replaced electronic modules meet the specifications of the oil and gas industry for high reliability and simple service.

Features

• Suitable for ex zones 0, 1 and 2
• Measurement ranges up to 7620 mm
• Absolute output signal with high resolution of up to 5 µm
• Pressure-resistant to 600 bar
• Range of interfaces available
• Fast commissioning through characteristic curve adjustment
• Many international certifications, such as IECEx, ATEX and CSA

BTL magnetostrictive sensors for fill level measurement

High-precision fill level measurement for maximum hygiene standards for excellent filling results

The fill level sensor continuously performs precise measurements in applications in which exceptional hygiene is required. The measurement system is made of corrosion-free stainless steel. With a high surface quality and rounded edges, it meets the highest international hygiene standards and allows you to easily implement, for example, the strict requirements of the food industry.

Features

n 100 % stainless steel for unbeatable hygiene standards and a long service life

n Safe for sterilization (SIP) and cleaning (CIP)

n Continuous precise measurement in the μm range for excellent filling results

n Reliable fill level values thanks to foam compensation system

n International certificates such as 3-A Sanitary Standard, FDA and EHEDG

n Tri-clamp mounting