Overview
Configured for non-contact rotational speed and proximity detection, the Emerson EPRO PR9376/010-001 (PR9376 Hall Effect Speed Sensor) provides direct electrical pulse generation from ferromagnetic targets. The sensor detects gear teeth or magnetic target features and supplies a speed-related signal for machinery monitoring circuits.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PR9376/010-001 |
| Brand | Emerson EPRO |
| Product Type | Hall Effect Speed / Proximity Sensor |
| Measurement Principle | Hall effect, non-contact magnetic detection |
| Target Material | Magnetic soft iron or steel, such as ST37 |
| Maximum Operating Frequency | 12 kHz |
| Dynamic Output | 1 AC cycle per revolution or gear tooth |
| Rise / Fall Time | Approx. 1 us |
| Air Gap | 1 mm for Module 1; 1.5 mm for Module 2 or larger |
| Power Supply | +10 to +30 VDC |
| Maximum Supply Current | 25 mA |
| Operating Temp | -25 to +100 deg C |
| Storage Temp | -40 to +100 deg C |
| Enclosure Protection | IP67 |
| Housing Material | Stainless steel |
| Cable Material | PTFE with armor protection |
| Weight | Approx. 0.36 kg |
| Dimensions | Estimated shipping size: 20 x 19 x 4 cm |
Magnetic Speed Signal Characteristics
The PR9376/010-001 detects changes in magnetic flux as a ferromagnetic target passes the sensing element. Each detected tooth or target feature produces a corresponding electrical cycle. Therefore, the output frequency follows the rotational speed and target geometry.
The sensor supports operation from near-zero speed to 12 kHz. Its stated rise and fall time of approximately 1 us supports fast pulse transitions for electronic speed monitoring circuits. The specified air gap depends on the target module size and directly affects magnetic coupling between the sensor and target.
The +10 to +30 VDC supply powers the integrated sensor electronics. The maximum stated supply current is 25 mA. The IP67 enclosure rating supports installation where protection against dust and temporary water exposure is required.
Frequently Asked Questions
Q: What type of target does the PR9376/010-001 detect?
A: It detects ferromagnetic targets, including magnetic soft iron or steel gear teeth and similar target features.
Q: What supply voltage does the sensor require?
A: The specified supply range is +10 to +30 VDC, with a maximum current of 25 mA.
Q: How does the air gap affect installation?
A: The specified air gap is 1 mm for Module 1 targets and 1.5 mm for Module 2 or larger targets. Maintain the applicable gap during mechanical installation.
Field Installation Guidelines
Mount the sensor so its sensing axis faces the ferromagnetic target surface. Maintain the specified air gap according to the target module size. Secure the sensor mechanically to prevent movement caused by machine vibration.
Route the sensor cable separately from high-current motor conductors and switching circuits where practical. Avoid sharp bends, excessive mechanical tension, and contact with hot or moving machine parts.
For shielded installations, terminate the cable shield according to the grounding practice of the connected machinery monitoring system. Keep the sensor supply wiring and signal wiring correctly identified before energizing the circuit.
Verify the +10 to +30 VDC supply before connection. After installation, rotate the target at a controlled speed and confirm that the monitoring circuit receives consistent pulses. Check the mechanical gap again if the detected signal becomes unstable.
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