H138 Mid Stroke Slim-Line Linear Position Sensor

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Key features

• Intrinsically safe for dust and gas zones
• Compact 19 mm stainless steel housing
• Travel range from 51 mm to 100 mm
• Sealing to IP67 for harsh environments
• Ratiometric 0.5–4.5 V output signal
• Infinite resolution with high accuracy

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Performance highlights

The H138 is a mid-stroke, slim-line linear position sensor designed for demanding industrial applications in hazardous environments. It features non-contacting inductive technology that ensures wear-free operation, excellent repeatability, and outstanding linearity (≤ ±0.25% FSO at 20°C). Its infinite resolution and low noise output (<0.02% FSO) make it highly reliable for precision measurement tasks.

Usage conditions

Built with a compact 19 mm stainless steel housing and rated to IP67, the H138 is suitable for both indoor and outdoor installations. Its intrinsic safety certifications (Ex ia IIC T4 Ga / AEx ia IIC T4 Ga, Zone 0/20, Class I/II/III Division 1) make it ideal for hazardous dust and gas atmospheres, with an operating temperature from -40°C to +80°C.

Possible applications

• Position feedback in hydraulic or pneumatic cylinders
• Valve position monitoring in hazardous areas
• Robotics and automation in ATEX-rated zones
• Oil, gas, and chemical plant instrumentation
• Test benches in explosive environments

Advantages of choosing this product

The H138 offers application flexibility with custom stroke lengths from 51 to 100 mm and multiple mounting and plunger options. Its compact form factor enables integration into tight spaces, while intrinsic safety certification ensures reliable use in classified hazardous zones.

Other important features:

• High frequency response > 10 kHz
• Low temperature coefficient < ±0.01%/°C
• Galvanic isolation amplifier compatibility (G005)
• Vibration resistance: 10 g (IEC 68-2-6)
• Shock resistance: 40 g (IEC 68-2-29)

 

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