Description

Technical Overview

The Bently Nevada 190501-02-00 Velomitor CT Velocity Transducer is a high-reliability, IEPE-compatible vibration sensor engineered for continuous condition monitoring in demanding industrial environments. Designed specifically for integration into rotating machinery protection systems—including steam and gas turbines, compressors, pumps, and large motors—the transducer delivers accurate, low-noise velocity measurements across a broad frequency range (3 Hz to 10 kHz). Its compact, hermetically sealed stainless steel housing ensures robust performance under extreme temperatures (–55°C to +125°C), high humidity, and exposure to oil, dust, and corrosive agents common in power generation, oil & gas, and heavy manufacturing facilities.

Unlike traditional charge-mode accelerometers requiring external signal conditioning, the 190501-02-00 features built-in electronics that provide true IEPE (Integrated Electronics Piezo-Electric) output—enabling direct connection to standard 4–20 mA or voltage-based monitoring systems without additional amplification. Its patented shear-mode piezoelectric sensing element minimizes base strain sensitivity and thermal transients, ensuring long-term stability and repeatability critical for predictive maintenance programs and API 670-compliant machinery protection systems.

Detailed Specifications

• Model Number: 190501-02-00
• Brand: Bently Nevada (Baker Hughes)
• Sensor Type: IEPE Velocity Transducer (Velomitor CT)
• Output Signal: 100 mV/(in/s) [4.0 mV/(mm/s)] nominal, ±5% tolerance
• Frequency Range: 3 Hz – 10 kHz (±5% amplitude accuracy)
• Dynamic Range: 120 dB (referenced to 10 µm/s RMS)
• Operating Temperature: –55°C to +125°C (–67°F to +257°F)
• Environmental Rating: IP68 (submersible up to 30 m for 24 hrs)
• Electrical Connection: Integral 3-meter, low-noise, shielded coaxial cable with 10-32 UNF connector
• Weight: 125 g (4.4 oz)
• Mounting: 1/4″-28 UNC threaded stud; optional magnetic base or adhesive mount kits available

Operational Capabilities

The 190501-02-00 excels in real-time, high-fidelity velocity measurement—ideal for detecting early-stage mechanical faults such as imbalance, misalignment, bearing degradation, and resonance conditions. Its optimized phase response and minimal phase shift (<5° from 10 Hz–5 kHz) support advanced time-synchronous averaging and orbit analysis when paired with Bently Nevada System 1™ or other compatible data acquisition platforms. The transducer supports both continuous online monitoring and periodic route-based collection, delivering consistent sensitivity regardless of cable length (up to 300 m with appropriate low-capacitance cabling). With a typical MTBF exceeding 100,000 hours and compliance with IEC 61000-4 electromagnetic immunity standards, it ensures uninterrupted operation in electrically noisy plant environments.

Technical FAQ

Q: Is the 190501-02-00 compatible with legacy Bently Nevada monitors?

A: Yes—the 190501-02-00 is fully backward-compatible with all Bently Nevada 3500, 3300, and System 1 platforms, including legacy rack-based monitors using standard 4–20 mA or voltage input modules. No firmware upgrades are required.

Q: Can this transducer be used in hazardous areas?

A: While the 190501-02-00 itself is not intrinsically safe or ATEX-certified, it may be deployed in Division 2 / Zone 2 environments when used with an approved safety barrier and proper conduit sealing. For Class I, Div 1 applications, consult Baker Hughes for certified explosion-proof mounting solutions.

Q: What calibration documentation is included?

A: Each unit ships with a NIST-traceable calibration certificate valid for 12 months, covering sensitivity, frequency response, and linearity per ISO 16063-21. Optional extended calibration services (including temperature-compensated sweeps) are available upon request.

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