Description
Bently Nevada 3300/65-14-01-00-00-01-00Dual Thrust Position Monitor
Configured for axial shaft displacement measurement in dual-channel thrust monitoring loops within Bently Nevada 3300 machinery protection platforms,the Bently Nevada 3300/65-14-01-00-00-01-00 (3300/65 Dual Thrust Position Monitor) provides direct physical signal conditioning and comparison of two independent proximity probe inputs. It accepts eddy-current proximity transducer signals and performs differential center-reference tracking for thrust position evaluation.
Suffix Breakdown & Model Matrix
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3300/65: Dual Thrust Position Monitor base unit
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14: Full-scale range 50 - 0 - 50 mils (8 mm proximity probe configuration)
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01: Transducer type 3300/7200 series 8 mm Proximitor system (200 mV/mil)
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00: No agency approval option
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00: Standard intrinsic safety grounding configuration
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01: Internal barrier configuration installed
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00: Standard display and internal options
Hardware Specifications
| Parameter |
Specification |
| ModelBrand |
Bently Nevada 3300/65-14-01-00-00-01-00 |
| Origin |
USA |
| Weight |
1.4 kg |
| Dimensions |
Not specified (standard 3300 rack module form factor) |
| OperatingTemp |
-20 degC to +65 degC |
| Channels |
2 independent thrust position channels |
| Input Type |
3300/7200 series 8 mm eddy-current proximity probes |
| Scale Factor |
200 mV/mil |
| Output Signals |
4-20 mA, 1-5 VDC, buffered BNC dynamic outputs |
| Relay Outputs |
Alert and Danger configurable relays |
Eddy-Current Probe Scaling and Gap Voltage Validation
The 3300/65 processes eddy-current probe gap voltage derived from 3300/7200 proximity systems with nominal -10 VDC near-zero reference tracking. Channel comparison logic evaluates axial shaft position relative to calibrated center zero. Signal integrity is maintained through cross-channel validation and loop continuity supervision, minimizing measurement drift between dual probe inputs.
Frequently Asked Questions
Q: Can the module operate with mixed probe series (3300 and 7200)?
A: The input conditioning stage supports both 3300 and 7200 8 mm Proximitor systems provided the scale factor remains 200 mV/mil and calibration is matched.
Q: What happens if one channel signal is lost?
A: The affected channel will drive the OK LED to fault state, while relay logic may enter configured bypass or trip state depending on alarm configuration.
Q: Is hot-swap supported in live rack operation?
A: The module supports rack insertion under powered conditions only when the backplane is designed for hot insertion; signal terminals must remain isolated during replacement.
Field Installation Guidelines
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Install module only in compatible Bently Nevada 3300 system rack backplane slots
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Maintain shield continuity for proximity probe coaxial cables to prevent noise coupling
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Ensure probe gap voltage is centered near -10 VDC during static calibration
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Verify channel A and B probe polarity alignment before enabling relay outputs
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Avoid routing sensor wiring parallel to high voltage conductors or VFD output cables
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Confirm internal barrier configuration matches hazardous area requirements before energization
