Overview
The Bently Nevada 3300/20-12-01-02-00-00, also cataloged as the 3300/20 Dual Thrust Position Monitor, operates as a dedicated hardware component for axial shaft displacement measurement within the Bently Nevada 3300 Monitoring System.
Suffix Breakdown & Model Matrix
| Model Segment | Specification |
|---|---|
| 3300/20 | Dual Thrust Position Monitor base model |
| 12 | Full scale range: 1.0-0-1.0 mm measurement span |
| 01 | Transducer input: 3300 / 7200 Proximitor System, 200 mV/mil or 7.87 V/mm scaling |
| 02 | Alarm relay option: Epoxy-sealed relays |
| 00 | Agency approval: Standard configuration |
| 00 | Trip multiply / special option: Standard hardware and firmware configuration |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 3300/20-12-01-02-00-00 |
| Brand | Bently Nevada |
| Origin | USA |
| Product Type | Dual Thrust Position Monitors |
| Weight | Approx. 1.0 kg |
| Dimensions | 1 full-height 3300 rack slot |
| Operating Temp | 0 deg C to +65 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Power Consumption | Compatible with standard Bently Nevada 3300 rack power supply |
| Input Channels | 2 independent proximity probe channels |
| Compatible Transducers | 3300 XL, 3300 8 mm, and 7200 series Proximitor Transducers |
| Input Impedance | 10 kOhm |
| Full Scale Range | 1.0-0-1.0 mm |
| Measurement Accuracy | Within +/-0.33% of full scale typical |
| Display Type | Vertical LCD bargraph for thrust position indication |
| Display Resolution | +/-1.6% of full scale |
| Recorder Outputs | +4 to +20 mA, 0 to -10 VDC, or +1 to +5 VDC short-circuit protected |
| Status Indicators | OK, Alert, Danger, and Bypass LEDs per channel |
| Alarm Functions | Digitally adjustable Alert and Danger levels from 0% to 100% of full scale |
| Relay Type | Hermetically sealed / epoxy-sealed relays |
| Logic Configuration | Programmable AND / OR voting logic |
Eddy-Current Probe Scaling and Rotor Position Monitoring
The 3300/20 processes eddy-current proximity probe signals and converts shaft displacement into proportional thrust position data. Furthermore, the monitor applies probe scaling parameters from compatible 3300 and 7200 Proximitor systems to maintain measurement accuracy across the axial movement range.
The module continuously validates the probe signal condition through its OK circuit. Therefore, it can identify probe faults, cable issues, and signal interruptions before they affect machinery protection decisions.
For TSI applications, the monitor supports gap voltage validation methods using the standard -10 VDC target condition of Bently Nevada eddy-current probe systems. Additionally, the dual-channel architecture allows engineers to analyze rotor dynamics behavior and monitor thrust movement trends during machine operation.
Frequently Asked Questions
Q: How many proximity probe signals can the 3300/20-12-01-02-00-00 process?
A: The monitor processes two independent proximity probe input channels for dual thrust position measurement.
Q: Does the 3300/20 support alarm voting logic?
A: Yes. The module provides programmable AND / OR relay logic to control alarm and trip decisions based on configured channel conditions.
Q: Which transducer systems are compatible with this monitor?
A: The module accepts input signals from Bently Nevada 3300 XL, 3300 8 mm, and 7200 series Proximitor transducers.
Reviews
There are no reviews yet.