Product Specification Document: Bently Nevada 330180-A51-B00
June 08, 2026

Product Specification Document: Bently Nevada 330180-A51-B00

The 330180-A51-B00 is a 3300 XL 8mm Proximitor Sensor (also referred to as a proximity sensor or signal conditioner) from Bently Nevada, a Baker Hughes company. It serves as the core signal-processing unit in the 3300 XL non‑contact eddy‑current sensor system, working with 8mm proximity probes and extension cables to measure shaft vibration, axial displacement, differential expansion, and speed/phase in critical rotating machinery. Designed for high accuracy and long‑term stability, it meets API 670 requirements and is widely used in power generation, oil and gas, and petrochemical industries for machinery protection and condition monitoring.

Description

Product Specification Document: Bently Nevada 330180-A51-B00

1. Product Overview

The 330180-A51-B00 is a 3300 XL 8mm Proximitor Sensor (also referred to as a proximity sensor or signal conditioner) from Bently Nevada, a Baker Hughes company. It serves as the core signal-processing unit in the 3300 XL non‑contact eddy‑current sensor system, working with 8mm proximity probes and extension cables to measure shaft vibration, axial displacement, differential expansion, and speed/phase in critical rotating machinery. Designed for high accuracy and long‑term stability, it meets API 670 requirements and is widely used in power generation, oil and gas, and petrochemical industries for machinery protection and condition monitoring.

2. Basic Product Information

Manufacturer and Model Identity

  • Manufacturer: Bently Nevada (Baker Hughes)

  • Model Number: 330180-A51-B00

  • Product Series: 3300 XL Series

  • Product Type: 8mm Proximitor Sensor (Signal Conditioner)

  • System Compatibility: 3300 XL 8mm probes, 3300 XL extension cables, 3500/42M, 1900/65, 990 transmitters

  • Country of Origin: United States

  • Configuration Code Meaning:

    • A51: 5‑meter total system length, standard approvals

    • B00: Standard cable and connector protection option

Electrical Characteristics

  • Power Supply: −17.5 VDC to −26 VDC (without safety barrier); −23 VDC to −26 VDC (with safety barrier)

  • Current Consumption: 4–12 mA typical @ −24 VDC

  • Output Signal: −1 VDC to −17 VDC, linear with probe‑to‑target gap

  • Sensitivity: 7.87 V/mm (200 mV/mil), ±5% including interchangeability error

  • Frequency Response: 0 Hz to 10 kHz (−3 dB), covers all common machinery vibration frequencies

  • Linear Range: 2 mm (80 mils), from ~0.25 mm to 2.3 mm gap

  • Recommended Installation Gap: 1.27 mm (50 mils)

Physical and Mechanical

  • Enclosure: Rugged blue epoxy‑coated metal, EMI‑shielded, conformal‑coated PCB

  • Dimensions: Approximately 80 mm × 120 mm × 50 mm (3.15 in × 4.72 in × 1.97 in)

  • Net Weight: ~0.246 kg (0.54 lb)

  • Mounting: DIN‑rail or panel‑mount; integrated electrical isolation base eliminates need for separate isolator plates

  • Terminations: Screw terminals for power, probe cable, and output signal; accepts 12–22 AWG wires

  • Enclosure Rating: IP20 (indoor use; finger‑contact protected)

Environmental Limits

  • Operating Temperature: −30°C to +65°C (−22°F to +149°F)

  • Storage Temperature: −40°C to +85°C (−40°F to +185°F)

  • Relative Humidity: 5%–95% RH (non‑condensing)

  • Vibration Resistance: 5 g (10 Hz–1 kHz); 10 g shock (11 ms half‑sine)

  • EMI Immunity: Meets IEC 61000‑6‑2/4; CE marked, cULus certified

Compliance and Certification

  • Standards: API 670 (Machinery Protection), ISO 10816, IEC 61000‑6‑2/4

  • Certifications: CE, cULus, RoHS compliant

  • Quality: ISO 9001 manufacturing; 100% factory calibrated and tested

  • Lifecycle Status: Active production; supported for new installations and retrofits

3. Function and Product Positioning

The 330180-A51-B00 is a high‑precision eddy‑current signal conditioner that converts probe signals into linear voltage outputs for machinery health monitoring.

Core Functions

  • Non‑Contact Displacement Measurement: Processes signals from 3300 XL 8mm probes to measure static shaft gap (axial displacement, differential expansion) and dynamic vibration (shaft orbit, radial vibration).

  • Signal Linearization & Conditioning: Provides highly linear output proportional to gap; filters high‑frequency noise to ensure stability in harsh electrical environments.

  • Dual Measurement Capability:

    • Static (DC): Average gap for axial position, thrust wear, and differential expansion.

    • Dynamic (AC): Vibration amplitude and frequency for unbalance, misalignment, and bearing fault detection.

  • System Interchangeability: Probes, extension cables, and proximitors are fully interchangeable without matched calibration, reducing inventory and maintenance costs.

Operational Features

  • Hot‑Swap Compatible: Can be replaced without shutting down the monitoring system (when used with compatible racks).

  • Built‑In Diagnostics: Detects probe open/short circuits, cable faults, and power supply anomalies; outputs fault indicators to monitoring systems.

  • Wide Temperature Stability: Maintains sensitivity and linearity across −30°C to +65°C, suitable for turbine and compressor enclosures.

  • DIN‑Rail Mounting: Compact design for high‑density panel installations; also compatible with traditional panel‑mount footprints.

Product Positioning

Positioned as the standard 8mm proximitor for critical machinery, the 330180-A51-B00 is ideal for:
  • Turbines, compressors, generators, and pumps in power generation, oil and gas, and petrochemical plants.

  • API 670‑compliant protection systems requiring non‑contact shaft monitoring.

  • New installations and retrofits of 3300 XL sensor systems with 5‑meter cable length requirements.

  • Integration with Bently Nevada 3500, 1900, and 990 series monitoring equipment.

4. Core Performance Parameters

Measurement Performance

  • Probe Compatibility: 3300 XL 8mm eddy‑current probes (330101, 330102, etc.)

  • Total System Length: 5 meters (probe + extension cable + internal wiring)

  • Linear Accuracy: ±1% of full scale (over 0.25–2.3 mm gap)

  • Repeatability: ±0.1% of full scale

  • Temperature Coefficient: ≤0.01%/°C (sensitivity drift)

Output Performance

  • Output Voltage Range: −1 VDC (2.3 mm gap) to −17 VDC (0.25 mm gap)

  • Output Impedance: 100 Ω (isolated)

  • Ripple & Noise: ≤5 mV peak‑to‑peak (0–10 kHz bandwidth)

Reliability

  • MTBF: >200,000 hours (25°C, continuous operation)

  • Warranty: 1 year (standard); extended warranties available

  • Maintenance: No scheduled maintenance; periodic calibration verification recommended every 2–3 years

  • Data Retention: Calibration data stored in non‑volatile memory

5. General Matching Accessories

Installation & Mounting

  • DIN‑rail mounting kit (standard with unit)

  • Panel‑mount adapter plate (compatible with older 3300 designs)

  • Shielded extension cables (3300 XL series, 5 meters total length)

  • Probe mounting hardware (8mm probe brackets, lock nuts)

System Compatibility

  • 3300 XL 8mm Probes (330101‑XX‑XX, 330102‑XX‑XX)

  • 3500/42M Dual Vibration/Position Monitor

  • 1900/65 Shaft Vibration Monitor

  • 990 Vibration Transmitter

  • Safety barriers (for hazardous area installations)

Maintenance & Spares

  • Proximitor replacement module (330180-A51-B00)

  • Conformal coating touch‑up kit (PCB protection)

  • Terminal block replacement kit

  • Factory calibration certificate (included with new units)

Documentation

  • 330180-A51-B00 Datasheet and Installation Manual

  • 3300 XL Sensor System Application Guide

  • API 670 Compliance Manual for Non‑Contact Sensors

  • Factory test and calibration report (included with unit)

6. Applicable Equipment and Industry Fields

Primary Applications

  • Power Generation: Steam/gas turbines, generators, boiler feed pumps, and critical compressors in thermal, combined‑cycle, and nuclear power plants.

  • Oil and Gas: Centrifugal compressors, gas turbines, and production pumps in refineries, LNG facilities, and offshore platforms.

  • Petrochemical: Process compressors, reactors, and large pumps in chemical processing plants.

  • Heavy Industry: Steel mill rolling mills, large fans, and compressors in metal processing facilities.

Secondary Applications

  • Water/Wastewater: Large pumps and blowers in treatment facilities (critical infrastructure).

  • Pulp and Paper: Paper machine drive motors, large fans, and compressors.

  • Mining: Ventilation fans, conveyor drive motors, and crushers in large mining operations.

Compatibility Notes

  • Requires 3300 XL System: Must be used with 3300 XL 8mm probes and extension cables; not compatible with older 3300 (non‑XL) probes.

  • Polarity Sensitivity: Power supply must maintain correct negative polarity; reverse polarity may damage the unit.

  • Cable Length: “A51” specifies 5‑meter total length; do not mix with other cable lengths without recalibration.

  • Hazardous Areas: Use with approved safety barriers for Class I, Division 2 installations.


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