H133 Intrinsically safe mid stroke linear position sensor

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Key features

• Certified for use in explosive gas and dust zones
• Compact and short-bodied sensor design
• High linearity with low temperature drift
• Calibrated to exact stroke requirements
• IP67-rated environmental protection
• Multiple mechanical mounting and plunger options

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Performance highlights

The H133 sensor delivers reliable and repeatable linear position measurement in explosive environments. It features a non-contact inductive sensing technology for wear-free performance and infinite resolution. With a linearity of ≤ ±0.25% FSO at 20°C and excellent thermal stability (< ±0.01%/°C), it is well-suited for demanding industrial applications.

Usage conditions

Designed for Class I, II, III Division 1 and Zone 0, 20 environments, the H133 operates in a wide temperature range of -40°C to +80°C. It is sealed to IP67 and complies with EN 61000-6-2 and EN 61000-6-3 EMC standards.

Possible applications

• Hydraulic cylinder stroke monitoring
• Valve and actuator position sensing
• Oil & gas environments (ATEX/IECEx/CSA)
• Industrial automation in hazardous zones
• Process control instrumentation

Advantages of choosing this product

With CSA-approved intrinsic safety and compact dimensions, the H133 is ideal where space is limited and safety is critical. It supports tailored calibrations and mounting configurations to match application-specific needs, all backed by Althen’s engineering expertise.

Other important features

• Travel range configurable between 51 mm to 100 mm
• Various connector and cable options (3- or 5-core)
• Compatible with Althen G005 Galvanic Isolation Amplifier
• Stainless steel construction for harsh conditions
• Multiple plunger types: spring-loaded, dome end, magnetic tip

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