Description
Emerson / EPRO PR9376/010-011 Hall Effect Speed Sensor
Continuing the machinery protection and sensor hardware sequence, PR9376/010-011 specifies a non-contact Hall Effect Speed and Proximity Sensor manufactured by Emerson EPRO.
Key Specifications & Overview
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Manufacturer: Emerson / EPRO
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Product Type: Hall Effect Speed / Proximity Sensor
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Model Code Breakdown (
PR9376/010-011):-
PR9376: Base Hall effect speed sensor platform
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010: Features integrated protective armored cable
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011: Specifies a 5-meter cable length with an open cable end
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Technical Performance
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Measuring Principle: Hall effect with a built-in permanent magnet for contactless detection of rotating ferrous targets (such as gear wheels or pulse disks).
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Frequency Range: 0 to 12 kHz (supports up to 720,000 cycles per minute).
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Output Signal: 1 AC cycle per gear tooth/revolution; fast rise/fall time ($\le 1\,\mu\text{s}$).
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Switching Voltage Levels: High $>10\text{ V}$, Low $<1\text{ V}$ (at 12 VDC supply and $100\text{ k}\Omega$ load).
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Permissible Air Gap: 1 mm (for Module 1 gears) up to 1.5 mm (for Module $\ge 2$ gears).
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Power Supply: 10 to 30 VDC (max. 25 mA).
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Environmental Protection: IP67 rating with a stainless steel body and PTFE-jacketed armored cabling, designed for operating temperatures between
Common Applications
Utilized extensively in industrial machine monitoring systems to track rotational speed, zero-speed, and phase position on critical rotating equipment, including:
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Steam, Gas, and Hydro Turbines
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Centrifugal and Axial Compressors
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Large Industrial Pumps and Fans
PR9376010-011
Product Overview
PR9376/010-011 is a Non-contact Eddy Current Keyphasor & Speed Probe manufactured by EPRO (Emerson). It is designed to detect rotational speed, phase reference signal (keyphase), shaft pulse position for turbomachinery monitoring systems.
Matched with signal conditioner CON021, it converts the clearance variation between probe tip and rotating gear/keyway into continuous analog voltage signals. It provides reliable trigger signals for turbine speed tracking, rotor dynamic analysis and sequence-of-event recording, widely used in steam turbines, gas turbines and generator supervisory instrumentation.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | PR9376/010-011 |
| Module Type | Eddy Current Keyphasor / Speed Probe |
| Manufacturer | EPRO, Emerson |
| Matching Conditioner | CON021 |
| Probe Diameter | 6 mm |
| Cable Length | 1 m armored cable |
| Sensitivity | 8 V/mm |
| Linear Measuring Range | 0 ~ 1 mm |
| Recommended Working Air Gap | 0.4 ~ 0.6 mm |
| Target Material | Ferromagnetic steel (42CrMo4) |
| Leakage Rate (Sealed Version) | <1×10⁻⁹ mbar·l/s |
| Probe Operating Temperature | -35 ℃ ~ +180 ℃ |
| Frequency Response | 0 ~ 10 kHz |
| Output Signal | Negative voltage feedback signal |
| Protection Grade | Probe housing IP66 |
| Core Application | Rotational speed pickup, keyphase reference pulse generation |
| Spare Part Status | OEM production discontinued; new surplus and refurbished assemblies available |
Key Features
- Specialized for keyphase signal capture; generates sharp pulse trigger for rotor phase marking
- Armored low-noise cable resists mechanical abrasion and electromagnetic interference in turbine cabinets
- Non-contact measurement, no mechanical wear against rotating shaft surface
- Must be used as a complete set with corresponding CON021 conditioner; random cross-matching is not allowed
- Built-in circuit monitoring function of the conditioner detects cable break and probe failure
- High temperature resistance enables installation near turbine bearing housings
Important Reminder: Distributors sometimes confuse it with PR6423 series vibration probes. PR9376 is mainly used for speed/keyphase, while PR6423 focuses on radial vibration and displacement measurement.
