Excellent PLC
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| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Introduction
The Epro PR9376/010-021 Speed/Proximity Sensor is a high-performance non-contact transducer designed to measure the speed and proximity of rotating machine components such as gears, shafts, and rotors. Developed by Epro, a trusted name in vibration and condition monitoring technologies, the PR9376/010-021 combines rugged construction with excellent signal stability, providing precise detection and measurement in demanding industrial environments.
This sensor operates on the variable reluctance principle, generating a voltage signal proportional to the speed of a ferromagnetic target moving past its sensing face. It is designed for use in high-speed rotating machinery where accurate speed feedback and proximity measurement are essential for safety, protection, and control systems.
The PR9376/010-021 offers excellent resistance to vibration, oil, dust, and moisture, making it suitable for use in harsh conditions such as power plants, refineries, and heavy machinery installations. The compact cylindrical body with a 14 mm diameter allows for easy integration in restricted mounting locations, and its robust stainless-steel construction ensures long service life and stable performance.
Product Parameters
| Parameter | Description |
|---|---|
| Product Model | PR9376/010-021 |
| Manufacturer | Epro GmbH |
| Product Type | Speed/Proximity Sensor |
| Sensing Principle | Variable Reluctance (Magnetic Induction) |
| Output Signal | Analog voltage proportional to speed |
| Target Type | Ferromagnetic (e.g., gear teeth, turbine blades, or shafts) |
| Supply Voltage | Self-generating, no external power required |
| Sensitivity | 50 mV to 200 mV per mm/s (typical) |
| Frequency Range | 0 to 20 kHz |
| Response Time | ≤ 1 ms |
| Operating Temperature | -35°C to +125°C |
| Storage Temperature | -40°C to +150°C |
| Mounting Type | Threaded cylindrical mount |
| Thread Size | M14 × 1.5 |
| Recommended Target Distance | 0.5 to 2.0 mm |
| Cable Type | Shielded two-wire cable |
| Electrical Connection | Integral cable or connector version |
| Housing Material | Stainless Steel |
| Environmental Protection | IP67 (oil, dust, and vibration resistant) |
| Compliance | CE / ISO 9001 / ATEX (optional) |
| Diameter | 14 mm |
| Weight | 0.21 kg |
Product Applications
The Epro PR9376/010-021 Speed/Proximity Sensor is designed for use in industrial machinery and turbine control systems requiring accurate speed and proximity feedback. Its versatility and durability make it ideal for:
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Turbomachinery Monitoring: Used in turbines and compressors to measure rotational speed and prevent overspeed conditions.
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Gear Speed Measurement: Monitors gear tooth passage frequency for speed control and fault detection.
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Pump and Motor Systems: Provides speed feedback for protection and performance optimization.
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Generator Systems: Measures rotor speed for synchronization and protection control.
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Industrial Automation: Used for motion feedback in automated equipment and rotating conveyors.
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Condition Monitoring Systems: Integrated into vibration and protection systems to correlate vibration data with rotational speed.
Product Advantages
The Epro PR9376/010-021 offers multiple technical and operational benefits that make it a preferred choice for engineers and system integrators:
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Non-contact Measurement: Ensures accurate and reliable speed sensing without physical wear or contact with the target surface.
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Self-powered Design: Does not require external power, simplifying wiring and reducing maintenance complexity.
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High Signal Integrity: Delivers stable output even under strong vibration and temperature variations.
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Excellent Environmental Resistance: IP67 protection ensures dependable performance in oil-rich and dusty environments.
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Compact Form Factor: Slim 14 mm diameter housing allows easy installation in limited spaces.
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Wide Frequency Response: Supports a broad range of rotational speeds for diverse industrial applications.
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Stainless Steel Construction: Offers superior corrosion resistance and mechanical durability.
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Compatible with Epro and Bently Nevada Systems: Fully integrable with standard monitoring modules and protection systems.
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Fast Response Time: Provides immediate signal output for dynamic speed variations.
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Reliable in Harsh Conditions: Performs consistently in environments with high temperatures, vibration, and electromagnetic interference.
FAQ
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What is the sensing principle of the Epro PR9376/010-021 sensor?
It operates on the variable reluctance principle, generating a voltage when a ferromagnetic target moves past the sensor’s magnetic field. -
Is this sensor compatible with turbine speed monitoring systems?
Yes, it is specifically designed for turbine and compressor speed monitoring applications and integrates easily with protection modules. -
Does the sensor require an external power supply?
No, it is a self-generating sensor that produces its own output voltage based on target motion. -
What type of targets can the PR9376/010-021 detect?
It detects ferromagnetic materials such as gear teeth, bolts, or rotors made of steel or iron. -
Can this sensor be used in hazardous or high-vibration areas?
Yes, it is available with ATEX-certified options and provides reliable operation under vibration, oil, and dust exposure. -
What is the maximum operating temperature for this sensor?
The PR9376/010-021 can operate continuously up to +125°C without performance degradation. -
How does the sensor output relate to rotational speed?
The output voltage amplitude and frequency increase proportionally with the target speed, enabling precise speed measurement. -
Can this sensor be used for proximity measurement as well as speed detection?
Yes, it can detect both the presence and distance of a target, making it suitable for combined speed/proximity applications. -
What are the recommended installation practices?
Ensure proper alignment with the target surface, maintain the specified air gap (0.5–2.0 mm), and use shielded cables to prevent interference. -
Is this sensor compatible with Epro PR6423 or Bently Nevada 3500 systems?
Yes, it can be integrated with Epro vibration and protection systems, and is also compatible with most Bently Nevada speed input modules.
Related Models (Same Series or Similar Type)
| Model | Description |
|---|---|
| PR9376/010-020 | Standard Speed/Proximity Sensor, M14 × 1.5, 10 mm sensing range |
| PR9376/011-021 | High-sensitivity model with extended frequency response |
| PR9376/012-021 | Compact model for limited installation space |
| PR9376/013-021 | Extended temperature range up to +150°C |
| PR9376/014-021 | Armored cable version for harsh industrial use |
| PR9376/015-021 | Dual-output type for redundant speed monitoring systems |
Popular Models from the Same Brand
| Model | Product Type | Description |
|---|---|---|
| PR6423/010-010 | Eddy Current Proximity Probe | High-precision vibration and displacement measurement |
| PR6424/010-030 | Velocity Sensor | For low-frequency vibration monitoring |
| MMS3120/022-100 | Monitoring Module | Signal processing module for vibration and speed inputs |
| MMS6823 | Overspeed Protection Module | Dedicated overspeed detection for turbine systems |
| CON021 | Proximitor Converter | Interface unit for proximity probe signal conditioning |
| PR9268/301-000 | Accelerometer | High-sensitivity vibration sensor for rotating equipment |
