330878-51-05 - Bently Nevada Proximitor Sensor

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Proximity Transducer

330878-51-05:

330878-51-05 is a 3300 XL 50 mm Proximitor Sensor designed specifically for the 3300 XL 50 mm Proximity Transducer System. It features a 5.0-meter system length configuration and DIN-rail mounting. The sensor carries Multiple Hazardous Area Approvals (CSA, ATEX, IECEx).

Parameters - 330878-51-05

Sensor Type:3300 XL 50 mm Proximitor Sensor
System Length:5.0 meters (16.4 feet)
Mounting Type:DIN mount (35 mm DIN rail compatible)
Power Requirement:-17.5 Vdc to -26 Vdc (without barriers); -23 Vdc to -26 Vdc (with barriers)
Current Consumption:12 mA maximum
Output Resistance:50 Ω
Linear Range:27.9 mm (1100 mils) — from 1.3 to 29.2 mm (50 to 1150 mils)
Average Scale Factor (ASF):394 mV/mm (10 mV/mil) nominal
Deviation from Best Fit Straight Line (DSL):Less than ±0.74 mm (±29 mils)

Application Areas - 330878-51-05

Radial Vibration Monitoring: Steam turbines, gas turbines, centrifugal compressors, pumps, and generators.
Keyphasor (Phase Reference/Speed) Measurement
Industry Compliance & Environment: Machinery Protection Systems in the Oil & Gas, Petrochemical, and Power Generation industries.

Important Cautions - 330878-51-05

DIN-Rail Mounting: Option AA = 51 provides DIN mount configuration for installation on standard 35 mm DIN rails. This is ideal for high-density control cabinet installations. Alternative: Option 50 for panel mount (4-hole mounting pattern).
High Temperature Compatibility: The 330878 Proximitor Sensor is designed to work with 50 mm probes that can withstand continuous operation at +200°C (392°F) and intermittent exposure up to +250°C (482°F) for less than 24 hours.
10 mV/mil Output: Unlike the 8 mm system (200 mV/mil), the 50 mm system uses a 10 mV/mil (394 mV/mm) scale factor. This matches legacy 7200 series 50 mm systems, allowing upgrades without monitor configuration changes.