Overview
Configured for non-contact speed and proximity detection, the Emerson EPRO PR9376/010-011 (PR9376 Hall Effect Speed and Proximity Sensor) detects ferromagnetic trigger marks and produces a digital pulse signal for rotational speed and phase measurement. The sensor uses Hall-effect detection and operates from a 10 to 30 VDC supply. (Ontrium)
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PR9376/010-011 |
| Brand | EPRO / Emerson |
| Product Type | Hall Effect Speed and Proximity Sensor |
| Origin | Germany |
| Weight | 0.58 kg shipping weight |
| Dimensions | 20 x 20 x 5 cm estimated shipping size |
| Operating Temp | -30 to +100 deg C |
| Short-Term Temperature | Up to +120 deg C for less than 30 seconds |
| Power Supply | 10 to 30 VDC |
| Power Consumption | Max. 25 mA supply current at 24 VDC; approximately 0.6 W |
| Measuring Principle | Hall effect |
| Output | 1 AC cycle per revolution or gear tooth |
| Maximum Operating Frequency | 12 kHz |
| Rise/Fall Time | 1 us |
| Output Level | High >10 V, Low <1 V at 12 VDC and 100 kOhm load |
| Air Gap | 1 mm for Module 1; 1.5 mm for Module >=2 |
| Target Material | Magnetic soft iron or steel |
| Sensor Housing | Stainless steel |
| Cable | PTFE insulated cable with metal protection tube |
| Protection Rating | IP66 |
| Maximum Load Resistance | 400 ohms |
The PR9376 sensor detects passing magnetic trigger marks without mechanical contact. Its output provides one electrical cycle for each detected revolution or gear tooth. The maximum specified trigger frequency reaches 12 kHz, while the pulse rise and fall time is approximately 1 us. (Ontrium)
Emerson EPRO Sensor Signal Characteristics
The sensor uses Hall-effect detection to convert magnetic target movement into an electrical pulse signal. Therefore, the target must provide a suitable ferromagnetic surface. The specified target material is magnetic soft iron or steel, while non-magnetic materials do not provide the required magnetic trigger condition. (Ontrium)
The electrical interface accepts 10 to 30 VDC. At a 12 VDC supply and 100 kOhm load, the output specification defines a HIGH level above 10 V and a LOW level below 1 V. The sensor supports a maximum operating frequency of 12 kHz. (Ontrium)
For mechanical installation, maintain the specified sensor-to-target air gap. The reference data specifies 1 mm for Module 1 gearing and 1.5 mm for Module 2 or larger gearing. The sensing geometry also depends on the trigger mark and gear profile. (Ontrium)
Frequently Asked Questions
Q: What type of target does the PR9376/010-011 detect?
A: It detects magnetic soft iron or steel trigger surfaces. The sensing principle requires a suitable ferromagnetic target.
Q: What supply voltage does the sensor require?
A: The sensor operates from 10 to 30 VDC and draws a maximum current of 25 mA. (Ontrium)
Q: What is the maximum signal frequency?
A: The specified maximum operating frequency is 12 kHz, with approximately 1 us output rise and fall times. (Ontrium)
Field Installation Guidelines
Mount the sensor so its sensing axis faces the rotating trigger surface according to the specified mechanical orientation. Next, set the sensor-to-target air gap within the applicable value for the installed gear module.
Use the specified magnetic target material and maintain the required trigger geometry. Avoid installing the sensor where non-magnetic structural components interrupt the intended sensing path.
Route the sensor cable separately from high-current switching conductors where practical. Keep signal wiring away from motor leads, contactor wiring, and other sources of strong electromagnetic interference.
Connect the supply and output conductors according to the applicable EPRO wiring arrangement. Verify supply polarity and voltage before energizing the sensor.
After installation, rotate the target at a controlled speed and verify that the output produces a consistent pulse waveform. Check the signal at the receiving monitoring input before placing the machinery into normal operation.
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