Description
Bently Nevada 14386-03 Proximitor Signal Conditioning I/O Module
Configured for eddy current proximity probe signal conditioning within Bently Nevada 3500 Series machinery monitoring architecture, the Bently Nevada 14386-03 (Proximitor 14386-03 signal conditioning I/O module) provides direct physical/electrical conversion of raw probe voltage into scaled displacement output using a fixed 200 mV/mil transfer function across 24 VDC powered conditioning stages.
Hardware Specifications
| Parameter |
Specification |
| Model |
14386-03 |
| Brand |
Bently Nevada |
| Origin |
USA |
| Weight |
0.50 lbs |
| Dimensions |
150 mm x 100 mm x 50 mm |
| Operating Temp |
-40 deg C to +85 deg C |
| Power Consumption |
Not specified (24 VDC supply input) |
| Function |
Proximitor signal conditioning |
| Sensitivity |
200 mV/mil fixed scaling |
| Input Channels |
Multi-probe configuration dependent |
| Output Signal |
Conditioned analog displacement voltage |
| Communication |
Ethernet / RS-485 |
| Mounting Type |
DIN rail / panel mount |
Gap Voltage Validation and Eddy-Current Linearization Control
The 14386-03 module implements fixed-slope signal conditioning for eddy current proximity probe systems, requiring controlled gap voltage validation during commissioning to ensure linear response within the 200 mV/mil transfer curve. Probe-to-target spacing verification ensures stable baseline offset behavior and prevents non-linear distortion in shaft displacement measurement. The conditioning stage maintains consistent excitation response across probe inputs, supporting stable vibration amplitude interpretation under varying rotor position states in 3500 Series monitoring chains.
Frequently Asked Questions (FAQ)
Q: Can the 14386-03 operate with non-200 mV/mil proximity probes?
A: No. The module is fixed at 200 mV/mil scaling. Mismatched probe sensitivity results in incorrect displacement conversion.
Q: Does the module support hot-swap replacement in a live rack?
A: Hot-swap capability depends on system implementation. Signal integrity is maintained only after full stabilization following reinsertion.
Q: What is required for proper signal conditioning stability?
A: Correct gap voltage setup and verified probe installation distance are required to maintain linear output response.
Field Installation Guidelines
-
Verify 24 VDC supply polarity before energizing the module
-
Ensure proximity probe cabling uses shielded twisted-pair conductors
-
Terminate cable shields at a single-point rack ground reference
-
Maintain physical separation between signal wiring and high-voltage conductors
-
Confirm DIN rail or panel mount locking before operation
-
Perform gap voltage verification during commissioning to validate probe linearity
