Description
Product Description
Overview
The PR9376/20 is a high-precision non-contact Hall effect sensor engineered for speed and proximity measurement in demanding turbomachinery environments. Designed for applications including steam, gas, and hydro turbines, compressors, pumps, and industrial fans, this sensor delivers reliable performance under high-speed and high-frequency conditions.
Key Features
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Non-contact differential Hall effect sensor with integrated operational amplifier
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Dual Hall effect elements in a half-bridge configuration for accurate signal detection
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Compact and durable design suitable for critical machinery
Technical Specifications
| Parameter |
Specification |
| Model |
PR9376/20 |
| Brand |
EPRO |
| Voltage |
220V / 380V |
| Dimensions |
30 × 20 × 25 cm (shipping), 16 × 16 × 12 cm (sensor head) |
| Weight |
1 kg |
| Output |
1 AC cycle per revolution or per gear tooth |
| Rise/Fall Time |
1 µs |
| Output Voltage |
High >10 V, Low <1 V (12 VDC, 100 kΩ load) |
| Air Gap |
1 mm (Module 1), 1.5 mm (Module ≥2) |
| Maximum Operating Frequency |
12 kHz (720,000 cpm) |
| Trigger Mark Compatibility |
Spur Wheel, Involute Gearing, Module 1 |
| Material |
ST37 Steel |
| Warranty |
12 months |
| Lead Time |
3–5 workdays |
| Packing |
Original manufacturer packaging |
Applications
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Speed measurement on high-speed rotors
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Proximity sensing in pumps, compressors, and turbines
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Monitoring rotational machinery in harsh industrial environments
FAQ
Q: Can this sensor operate on both AC and DC systems?
A: The PR9376/20 is designed for AC excitation, typically 220V or 380V, and provides a DC-compatible output signal for measurement electronics.
Q: What is the recommended air gap?
A: 1 mm for Module 1 and 1.5 mm for Modules 2 or higher. Maintaining this ensures optimal signal fidelity.
Q: How does it compare to similar EPRO models?
A: Compared to the PR9375 series, the PR9376/20 supports higher frequency operation and a more compact sensor head for tight installation environments.
