Configured for proximity probe signal conditioning in Bently Nevada Proximitor measurement chains, the Bently Nevada 134M2166-01 / 134M6794-01 (134M2166-01 / 134M6794-01 Proximitor Monitor Module) provides direct electrical processing of eddy-current probe inputs within a TSI signal acquisition architecture.
The module processes low-level displacement signals from non-contacting proximity probes and converts them into calibrated shaft dynamic and position outputs. Signal paths are designed for continuous acquisition of radial vibration, axial thrust position, and slow-roll eccentricity behavior during machine start-up and steady-state operation. Output scaling is referenced to probe gap voltage transfer characteristics, typically validated against -10 VDC linear operating regions in eddy-current transducer chains.
Suffix Breakdown & Model Matrix
134M2166-01: Base monitor/interface assembly identifier used in configured Proximitor channel processing systems
134M6794-01: Associated revision or mating assembly identifier used for system-level compatibility mapping
No further structured suffix segmentation is defined in provided technical data; internal revision encoding is manufacturer-specific
Hardware Specifications
Parameter
Specification
Model
134M2166-01 / 134M6794-01
Brand
Bently Nevada
Origin
United States
Weight
1kg
Dimensions
Not specified
Operating Temp
-40 deg C to +85 deg C (system-dependent envelope)
Power Consumption
24 VDC nominal system supply (current not specified)
Input Type
Eddy-current proximity probe signal
Signal Processing
Radial vibration, axial position, eccentricity
Output Scaling
Probe-dependent (e.g., 100 mV/mil or equivalent metric scaling)
Output Impedance
50 ohm
Eddy-Current Probe Scaling and Gap Voltage Validation (Bently Nevada Architecture)
The module operates within a calibrated eddy-current transducer chain where probe tip geometry, extension cable length, and proximitor driver linearity define the final transfer function. Gap voltage validation is performed against standardized linear regions, typically referenced around negative supply bias conditions (approximately -10 VDC operating midpoint).
Cross-channel signal isolation is implemented to minimize electrical crosstalk between adjacent vibration measurement axes, ensuring stable rotor dynamic interpretation under high mechanical vibration density environments. Scaling accuracy is dependent on probe family matching and field calibration of the full measurement loop.
Frequently Asked Questions (FAQ)
Q: Can the module be hot-swapped during active monitoring operation? A: Hot-swap capability is not defined at module level. Removal under energized conditions may interrupt probe bias voltage and invalidate gap reference stability across connected channels.
Q: What is the typical backplane or system load behavior? A: Backplane loading is dependent on chassis configuration. The module draws low-current DC bias typical of proximitor signal conditioning circuits, but exact load distribution depends on rack architecture.
Q: Is firmware-level synchronization required between paired modules (134M2166-01 and 134M6794-01)? A: No firmware synchronization data is specified. Compatibility is determined by hardware revision matching and probe scaling configuration rather than embedded firmware interlock.
Field Installation Guidelines
Maintain coaxial probe cable integrity with continuous shield termination to chassis ground at a single reference point only
Avoid sharp bending radius on extension cables to prevent impedance discontinuity in high-frequency eddy-current signal paths
Ensure probe gap calibration is performed before system energization to establish baseline DC bias voltage reference
Install module within rated enclosure environment to prevent contamination of conformal coated PCB surfaces
Verify connector engagement torque consistency for all ClickLoc-style coaxial interfaces to prevent micro-disconnection under vibration load
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