Bently Nevada 330878-90-00 50 mm Proximitor Sensor
A panel-mount Proximitor Sensor calibrated for the 9.0 m 3300 XL 50 mm transducer system.
Key Information
330878-90-00 is the Proximitor Sensor for a 3300 XL 50 mm proximity transducer system. Ordering code 90 specifies a 9.0 m system length and panel mounting, while code 00 specifies no agency approvals.
The 50 mm system is intended for long-range differential-expansion or rotor-expansion measurement on large turbine generators. Its probe and extension-cable lengths must add up to the 9.0 m calibration length of this sensor.
Functions
- Conditions the signal from one matched 3300 XL 50 mm proximity probe and extension cable.
- Provides the nominal 0.394 V/mm output used by compatible machinery-monitoring instrumentation.
- Supports non-contact differential-expansion measurement across the system linear range.
Specifications
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Part Number | 330878-90-00 |
| System | 3300 XL 50 mm proximity transducer system |
| Component | Proximitor Sensor |
| System Length | 9.0 m (29.5 ft) |
| Mounting | Panel mount |
| Agency Approval Option | 00 — no approvals |
| Nominal Scale Factor | 0.394 V/mm (10 mV/mil) |
Installation
- Confirm that probe length plus extension-cable length equals the 9.0 m sensor calibration.
- Use the panel-mount hardware and maintain access to SpringLoc field terminals.
- Route shielded field wiring away from high-energy conductors and follow the official grounding drawing.
- Verify target material, probe gap, channel scaling and differential-expansion direction before service release.
Lifecycle
- Keep the probe, extension cable and 330878-90-00 labels in one calibrated-loop record.
- Do not mix 5 m and 9 m components during maintenance.
- Recheck the approval requirement if the sensor is moved into a classified installation.
FAQ
Can 330878-90-00 be used with a 5 m probe-and-cable combination?
No. 330878-90-00 is calibrated for a 9.0 m system, so the probe and extension cable must total 9.0 m.
What does the 90 code mean in 330878-90-00?
It identifies the 9.0 m system-length, panel-mount execution.
Does 330878-90-00 include hazardous-area approvals?
No. The final 00 is the no-approvals option; the required installation approvals must be checked separately.
What should accompany a 330878-90-00 quotation request?
Send the sensor, probe and extension-cable labels, mounting photograph, target material and required approval context.
What is the main commissioning risk with 330878-90-00?
A mismatched total cable length or incorrect target calibration can invalidate the expected scale factor and linear range.
