M133 Mid stroke linear position sensor

Compact and intrinsically safe linear sensor designed for hazardous mining and industrial environments. Custom travel, rugged design, and EMC protection.

Key features

Intrinsically safe for mining and hazardous zones (ATEX / IECEx / UKEX)
Short body design with travel range from 51 to 100 mm
Non-contact inductive technology for long-term durability
Calibrated output with high accuracy and excellent repeatability
IP67 sealed housing with multiple mounting options
Galvanic isolation amplifier support for long cable runs

Performance highlights

The M133 sensor offers precise linear displacement measurement with an infinite resolution and excellent linearity of ≤ ±0.25% FSO. Its stainless steel housing and plunger ensure high durability, while the non-contact inductive technology minimizes wear. Operating reliably between -40°C and +80°C, it maintains signal stability even under tough industrial conditions.

Usage conditions

Designed for hazardous gas, vapor, and dust atmospheres, the M133 is certified with Ex I/II M1/GD and T4 ratings. The sensor is fully EMC-compliant, vibration-tested to 10 g (IEC 68-2-6), and shock-resistant up to 40 g (IEC 68-2-29). With IP67 sealing and support for cable lengths up to 1000 meters, it offers robust performance in both surface and mining applications.

Possible applications

Mining and tunneling equipment
Mobile drilling machines
Hydraulic cylinders in hazardous environments
Valve and actuator monitoring
Explosion-risk industrial automation
OEM systems requiring compact sensing elements

Advantages of choosing this product

The M133 provides reliable position sensing where space is limited and conditions are extreme. With its compact form factor, customizable travel, and built-in safety approvals, it’s a trusted choice for OEMs and system integrators who need ATEX/IECEx-compliant solutions. The option for three- or five-wire connection allows flexible integration even over long distances.

Other important features

Output: 0.5 – 4.5 V ratiometric with 5 V supply
Temperature coefficient: < ±0.01%FS/°C
Frequency response: >10 kHz
Noise: <0.02% FSO
Multiple plunger tips and mounting configurations
Galvanic isolation amplifier available (X005)

Do you need this sensor for your next project?

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