330878-91-00 Bently Nevada Proximitor Sensor

Bently Nevada 330878-91-00 3300 XL 50 mm Proximitor Sensor

Bently Nevada 330878-91-00 3300 XL 50 mm Proximitor Sensor

التوفر: 10 متوفر في المخزون

The Bently Nevada 330878-91-00, also cataloged as the 330878-91-00 Proximitor Sensor, operates as a dedicated hardware component for sensing shaft...

رمز المنتج: 330878-91-00

Manufacturer: Bently Nevada
Product No.: 330878-91-00
Product Type: Proximity Sensors
Product Origin: USA
Payment:T/T, Western Union
Weight: 3000g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

The Bently Nevada 330878-91-00, also cataloged as the 330878-91-00 Proximitor Sensor, operates as a dedicated hardware component for sensing shaft displacement and vibration within machinery protection systems.

Suffix Breakdown & Model Matrix

330878: 3300 XL 50 mm Proximitor Sensor base model.
91: 9.0 meters (29.5 feet) total system length, DIN mount configuration.
00: Agency approval option (none).

Hardware Specifications

Parameter	Specification
Model	330878-91-00
Brand	Bently Nevada
Origin	USA
Weight	3.0 kg (shipping weight)
Dimensions	Standard 3300 XL DIN mount housing
Operating Temp	-51 deg C to +100 deg C
Power Consumption	3300 XL loop-powered
Material	A380 aluminum

Eddy-Current Probe Scaling and Rotor Dynamics

The 330878-91-00 sensor converts high-frequency oscillation from the probe tip into a proportional voltage signal for rotor dynamics analysis. Achieving measurement precision requires rigorous gap voltage validation; the system is designed to target -10 VDC when the probe is set at the electrical center of its linear operating range. Deviations from this target indicate potential misalignment or target surface irregularities. Furthermore, to maintain effective signal fidelity, cross-talk suppression must be enforced by maintaining manufacturer-specified separation distances between adjacent probes to prevent frequency interference in the oscillator output.

Frequently Asked Questions

Q: Can the 9.0 meter system length be adjusted by trimming the coaxial cable?

A: No. The system length is factory-calibrated based on the specific capacitance of the integral cable. Modifying the cable length alters the electrical characteristics of the oscillator circuit, leading to non-linear output and invalidating measurement accuracy.

Q: Is this sensor compatible with high-temperature environments?

A: The sensor is rated for operation up to +100 deg C. For installations exceeding this range, ensure proper air-flow or thermal isolation is provided to prevent premature failure of the internal electronics.

Field Installation Guidelines

Ensure the DIN-rail is securely mounted and bonded to the system common to maintain ground integrity.
Route the coaxial extension cable within dedicated conduits, ensuring a minimum distance of 30 cm from high-power AC or VFD cabling to minimize electromagnetic interference.
Verify that the system length matches the configuration parameter in the monitoring rack.
Use a torque wrench on coaxial connectors, applying only finger-tight pressure plus one-quarter turn to prevent thread stripping or dielectric compression.
Perform an initial gap voltage check using a digital multimeter at the monitor input to verify the baseline voltage before machine startup.

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مارك تومسون

مدير الصيانة، الولايات المتحدة الأمريكية

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روبرت هوفمان

رئيس قسم الهندسة، ألمانيا

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