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The 79482-01 dual thrust position monitor from Bently Nevada measures axial shaft movement inside steam and gas turbine systems. Plant engineers install this monitor whenever rotor thrust clearance demands continuous, precise surveillance. Consequently, it protects turbine bearings from damage by catching abnormal axial displacement early.
Key Technical Specifications
The table below outlines the main physical and electrical parameters of the 79482-01 monitor.
| Parameter | Specification |
|---|---|
| Product Type | Dual Thrust Position Monitor |
| Compatibility | Bently Nevada 3300 / 3500 series systems |
| Dimensions | Approximately 254 mm x 127 mm x 51 mm |
| Weight | Approximately 1.1 kg (2.4 lbs) |
| Mounting | Panel or rack frame mounting base |
| Interface | Backplane bus and transducer input terminals |
| Connectors | Multi-pin connector and terminal blocks |
| Component Count | Multiple signal processors, drivers, and logic circuits |
| Energy Storage | On-board capacitors for signal and voltage stabilization |
| Input Channels | Two independent thrust position channels |
| Measurement Range | Configurable axial displacement range |
| Operating Temperature | 0 degrees C to 60 degrees C |
| Storage Temperature | -40 degrees C to 85 degrees C |
| Humidity | 5% to 95% non-condensing |
Functional Overview
This monitor reads proximity probe signals and converts them into axial displacement values. Therefore, it tracks rotor thrust position in real time across both channels. The 79482-01 also compares readings against alarm and trip setpoints for machine protection. Meanwhile, its onboard energy storage stabilizes signals against transient electrical noise.
Installation and Handling Notes
Always verify probe gap voltage before connecting transducers to the 79482-01. In addition, check that channel addressing matches your protection configuration. Tighten terminal screws evenly to prevent intermittent connections. Finally, test alarm and trip setpoints during commissioning.