Product Introduction: 78462-01
The 78462-01 is a Proximity Transducer System (Proximitor), a critical component for machinery condition monitoring. This device is a signal conditioner specifically designed to work with eddy-current displacement probes. It provides the high-frequency radio frequency (RF) power to the probe and conditions the returning signal, generating two key outputs: a dynamic AC voltage proportional to vibration (for analyzing shaft motion) and a static DC voltage proportional to the average gap between the probe tip and the target (for measuring shaft position). It is a fundamental building block for protecting rotating machinery like turbines and compressors.
Technical Parameters
The key technical specifications for the 78462-01 proximitor are summarized in the table below.
| Parameter | Specification |
|---|---|
| Part Number | 78462-01 |
| Type | Proximity Transducer / Proximitor (Signal Conditioner) |
| Mounting | DIN Rail or Panel Mount |
| Dimensions (L x W x H) | Approx. 120 mm x 80 mm x 40 mm |
| Weight | 0.35 kg |
| Input (To Probe) | -18 VDC to -24 VDC RF Supply |
| Output Signals | • Vibration (AC): -1 to -11 VDC (200 mV/mil) • Gap (DC): -2 to -18 VDC (200 mV/mil) |
| Frequency Response | 0 to 10,000 Hz (+1%, -3%) |
| Power Supply | +20 to 32 VDC |
| Linearity | Within ±1% of full scale |
| Operating Temperature Range | -20°C to +80°C |
Application Scenarios
This proximitor is a core component in systems monitoring radial vibration and axial position of rotating machinery.
Shaft Vibration Monitoring:
Used to condition signals from proximity probes monitoring radial vibration on critical equipment like steam turbines, gas turbines, and centrifugal compressors to detect imbalance, misalignment, and shaft cracks.
Axial Thrust Position Monitoring:
Essential for monitoring the axial position of a rotor to prevent catastrophic damage from excessive thrust bearing wear or failure in machines like turbines and large pumps.
Eccentricity and Differential Expansion:
Used in applications to measure slow-roll shaft bow (eccentricity) and the differential thermal growth between a rotor and its casing in large steam turbines.
Integration with Monitoring Systems:
The conditioned DC (gap) and AC (vibration) output signals are designed to be connected to the input channels of machinery monitoring systems (like the Bently Nevada 3500) or data acquisition systems for alarm and shutdown functions.
General Rotating Machinery Protection:
Provides the essential signal conditioning for any application using eddy-current probes for precise, non-contact measurement of shaft relative motion.
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Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
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7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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