Introduction
The 16710-12 is a proximity probe assembly and not a module for the 3500 rack system. It is a specialized eddy-current displacement sensor kit, typically designed for industrial machinery monitoring. This specific part number indicates a complete assembly that includes a proximity probe, an extension cable, and possibly a connector. The "-12" suffix often denotes the standardized cable length in feet (e.g., 12 feet) from the probe to the connector. As a key component in vibration and position monitoring systems, it measures the distance (gap) between its tip and a conductive metal target (usually a rotating shaft), providing crucial data for machinery protection.
Key Parameters
The following table summarizes the key technical and physical specifications for a typical 16710-12 proximity probe assembly.
| Parameter Category | Specification |
|---|---|
| Model / Part Number | 16710-12 |
| Primary Function | Eddy-Current Displacement Sensor (Proximity Probe) for measuring vibration and position. |
| Sensor Type | Non-contact, eddy-current displacement transducer. |
| Target Material | Ferrous or conductive metals (e.g., steel shaft). |
| Probe Diameter | Typically 11 mm (a common size for general-purpose industrial monitoring). |
| Sensitivity | Standard industry sensitivity, typically 200 mV/mil (7.87 V/mm). |
| Linear Range | Approximately 0 to 80 mils (0 to 2.0 mm) from the probe tip. |
| Operating Temperature | Probe: Up to 120°C (248°F) or higher, depending on specific model. Cable: Lower temp rating. |
| Cable Length | The "-12" indicates the assembly includes a 12-foot (approx. 3.66-meter) integral or extension cable. |
| Connector | Typically terminates in a standard Bently Nevada-style metal bayonet connector (e.g., DIN 43650 style). |
| Dimensions & Weight (Probe Only) | Approx. Φ11 mm x 80 mm (body length). Weight: ~ 0.1 kg. |
| Dimensions & Weight (Full Assembly) | Varies with cable coiling. Total shipping weight typically 0.3 - 0.5 kg. |
*Crucial Note: The specifications above are representative of common 11mm probe systems. The exact parameters for part number 16710-12 must be verified with the manufacturer's datasheet, as this number could be used by different suppliers (e.g., Bently Nevada, General Electric, SKF) with potentially varying specs.*
Application Scenarios
This sensor assembly is a fundamental building block for monitoring rotating machinery across virtually all heavy industries.
Shaft Radial Vibration Monitoring:
Mounted perpendicular to a shaft, it dynamically measures the change in gap to monitor vibration levels (peak-to-peak displacement) on turbines, compressors, pumps, and motors for imbalance, misalignment, or instability.
Axial Position/Thrust Monitoring:
Mounted facing a shaft collar or thrust runner, it measures the axial movement of the rotor to monitor thrust bearing wear and prevent catastrophic failure due to excessive rotor float.
Eccentricity and Runout Measurement:
Used during slow-roll conditions to measure mechanical and electrical runout of a shaft, which is critical for establishing a true vibration baseline.
Keyphasor® Reference Signal:
A single probe mounted next to a keyway or notch on the shaft generates a once-per-revolution timing pulse (Keyphasor signal) essential for determining vibration phase and rotational speed.
Industry-Wide Application:
Power Generation: Installed on steam and gas turbines, generators, and large pumps.
Oil & Gas: Used on pipeline compressors, gas turbines, and offshore platform machinery.
Water Treatment: Monitors critical pumps and blowers.
Manufacturing: Applied to paper machine rolls, large fans, and gearboxes.
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