Manufacturer: Bently Nevada
Product No.: 330878-90-CN
Country of origin:United States
Product Type: Proximitor Sensors
Payment: T/T, Western Union
Weight: 320g
Shipping port: Xiamen
Warranty: 12 months
Conditioning dynamic eddy current signals for high-reliability machinery diagnostics, the Bently Nevada 330878-90-CN operates as a key component of the 3300 XL 50 mm Proximitor Sensor system. This unit converts the radio frequency (RF) signal generated by the proximity probe into a proportional voltage output, enabling precise measurements of shaft displacement, vibration, and position in heavy rotating machinery. The specific -90-CN configuration designates a 9.0-meter system length with panel-mounting capability and regional-specific safety certifications.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model Number | 330878-90-CN |
| Sensor Series | 3300 XL 50 mm |
| System Length | 9.0 meters (29.5 feet) |
| Mounting Configuration | Panel Mount |
| Housing Material | A380 Aluminum |
| Operating Temperature | -51 degC to +100 degC (-60 degF to +212 degF) |
| Storage Temperature | -51 degC to +105 degC (-60 degF to +221 degF) |
| Agency Approvals | CN (Country Specific Approvals) |
| Shipping Weight (Calculated) | 3.0 kg (6.6 lbs) |
| Country of Origin | United States |
| Terminal / Port | Function / Circuit Assignment |
|---|---|
| Coaxial Jack | Accepts RF cable connection from the 3300 XL 50 mm extension cable / probe assembly. |
| Terminal VT | Power input supply (-24 Vdc nominal). |
| Terminal OUT | Dynamic output voltage signal (proportional to target distance). |
| Terminal COM | Common ground reference. |
The 330878-90-CN must only be paired with 3300 XL 50 mm proximity probes and equivalent 9.0-meter matching systems. It is not interchangeable with 8 mm or 11 mm Proximitor sensors, as the internal oscillators and linearization curves are explicitly tuned for the electromagnetic footprint of the large 50 mm probe head. Intermixing components across different millimeter-scale families will lead to severe calibration drift and false machine trip signals.
The 50 mm sensor system generates a broad electromagnetic field. Ensure that a clear, unobstructed side-clearance zone is maintained around the probe head to prevent parasitic targets (such as machine casing walls or internal brackets) from entering the detection field. Operating outside the rated temperature envelope (-51 degC to +100 degC) will degrade the sensor's temperature compensation circuitry, introducing measurement offset errors.
Always check the coaxial connector insulation prior to startup. The outer connector sleeve must be kept completely isolated from the machine ground; utilize Bently Nevada connector protectors or silicone heat-shrink tubing over the coaxial junctions. For signal integrity, route field wiring inside dedicated, grounded conduit, keeping it physically separated from high-voltage motor supply runs to minimize electromagnetic interference.
Isolate and lock out all external power sources before handling terminal block wiring. Failure to de-energize active monitoring systems prior to connection can introduce electrical transients that may cause damage to the monitoring rack input cards or trigger spurious turbine emergency trips.
Mount the Proximitor housing securely on the subpanel using the integrated mounting flanges. Ensure the mounting plate has a solid path to the structural instrument ground.
Connect the 9.0-meter extension cable coaxial plug to the sensor's coaxial jack. Hand-tighten the connector and ensure the mechanical locking mechanism is secure.
Install three-wire shielded instrument cabling to the VT, OUT, and COM screw terminals, maintaining proper torque to prevent loose terminations.
Ground the cable shield exclusively at the monitor rack/safety barrier end; do not connect the shield to ground at the Proximitor sensor terminal block to avoid ground loops.
Global Express Shipping
Returns & Warranty
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Blue
Silver
|
| Country of origin |
United States
|
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