Name: Magnescale PL81 / PL82 Digiruler Reader Heads (for SL110, SL130)
Brand: Magnescale
Price: 377 GBP
Availability: InStock

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Prices starting from: £377.00

Typical pricing varies by model, please contact us for a quote.

Compact Magnetic Reader Heads for Automated Position Control

The Magnescale PL81 and PL82 are compact Digiruler reader heads designed for reliable position measurement in industrial automation and machine control applications. Combining the reader head and interpolator into a single unit, they provide a simple and robust solution for linear position feedback when used with Magnescale SL110 and SL130 magnetic ribbon scales.

Using magnetic detection technology, the PL81 and PL82 offer excellent resistance to dust, oil, coolant and moisture, making them well suited to demanding manufacturing environments where optical measurement systems may struggle.

With resolutions from 10 μm to 100 μm and maximum response speeds of up to 300 m/min, the PL81 and PL82 provide dependable position feedback for automated machinery, material handling systems and general industrial positioning applications.

Key features

Compact integrated reader head and interpolator design
Designed for use with Magnescale SL110 and SL130 magnetic scales
Resistant to dust, oil and water contamination
High-speed operation up to 300 m/min
Resolution options of 10 μm, 20 μm, 25 μm, 50 μm and 100 μm
IP67 protection rating for demanding industrial environments
Suitable for automated position control applications
Available with cable lengths from 3 m to 15 m
Maintenance-free magnetic measurement technology
Reliable operation in harsh factory conditions

Magnescale PL81, PL82 Reading Head configuration

Designed for Harsh Industrial Environments

Unlike optical position measurement systems, the Digiruler magnetic measurement principle is highly resistant to contamination. The PL81 and PL82 continue to provide reliable position feedback in environments exposed to:

Oil and cutting fluids
Dust and swarf
Moisture and washdown conditions
Vibration and shock
General industrial contamination

This makes them particularly suitable for production machinery, material handling systems and automated equipment operating in challenging factory environments.

Typical applications

The PL81 and PL82 are commonly used in:

Packaging machinery
Conveyor systems
Automated assembly equipment
Positioning tables
Industrial automation systems
Material handling equipment
Woodworking machinery
Metalworking machinery
Special-purpose machines
General machine positioning applications

Compatible Digiruler Magnetic Scales

The PL81 and PL82 reader heads are designed for use with:

These magnetic scales provide measuring lengths from 200 mm up to 30,000 mm depending on the scale selected, allowing the system to be configured for a wide range of machine sizes and applications.

Part Numbers

Product Code	Product Name	Description
97969801	PL81-3	PL81-3 Reading Head for SL110/130 Cable 3m (Open collector output)
97969802	PL81-5	PL81-5 Reading Head for SL110/130 Cable 5m (Open collector output)
97969803	PL81-7	PL81-7 Reading Head for SL110/130 Cable 5m (Open collector output)
97969804	PL81-A	PL81-A Reading Head for SL110/130 Cable 10m (Open collector output)
97969805	PL81-B	PL81-B Reading Head for SL110/130 Cable 15m (Open collector output)
97500291	PL81-LAG	PL81-LAG Reading Head for SL110/130 Cable 0,7m (Open collector output)
97969901	PL82-3	PL82-3 Reading Head for SL110/130 Cable 3m (differential line driver output)
97969902	PL82-5	PL82-5 Reading Head for SL110/130 Cable 5m (differential line driver output)
97969903	PL82-7	PL82-7 Reading Head for SL110/130 Cable 7m (differential line driver output)
97969904	PL82-A	PL82-A Reading Head for SL110/130 Cable 10m (differential line driver output)
97969905	PL82-B	PL82-B Reading Head for SL110/130 Cable 15m (differential line driver output)
97930740	PL82-BT02	PL82-BT02 Reading Head for SL110/130 Cable 20m (differential line driver output)
97951037	PL82-L0A	PL82-L0A Reading Head for SL110/130 Cable 0,5m (differential line driver output)

Why Choose the Magnescale PL81 / PL82?

The PL81 and PL82 offer a simple, robust and cost-effective method of obtaining accurate linear position feedback in environments where contamination, vibration or demanding operating conditions make alternative technologies unsuitable. Their integrated design, high environmental resistance and straightforward installation make them a popular choice for machine builders and automation engineers worldwide.

Q: What is the difference between the PL81 and PL82?

A: The PL81 and PL82 use the same magnetic sensing technology and are designed for use with Magnescale SL110 and SL130 magnetic ribbon scales. The main difference is the output type and power supply requirement.

The PL81 provides an open collector A/B phase output and operates from a 10-30 VDC supply, while the PL82 provides a line driver A/B phase output and operates from a 5 VDC supply.

Q: Which scales are compatible with the PL81 and PL82?

A: The PL81 and PL82 are designed for use with Magnescale SL110 and SL130 Digiruler magnetic scales. These scales are available in measuring lengths from 200 mm up to 30,000 mm depending on the model selected.

Q: What resolution options are available?

A: Both reader heads are available with resolutions of 10 μm, 20 μm, 25 μm, 50 μm and 100 μm, allowing the system to be matched to the accuracy requirements of the application.

Q: Are the PL81 and PL82 suitable for harsh industrial environments?

A: Yes. The Digiruler magnetic measurement system is designed to operate in environments where dust, oil, coolant and moisture may be present. The reader heads are rated to IP67, making them suitable for demanding industrial applications.

Magnescale Digiruler Catalogue