Product Overview

The Bently Nevada 86517-01-01-01-02 is a specialized signal conditioning module from the 159840-01 series, engineered to interface with piezoelectric charge accelerometers. Its primary function is to transform high-impedance charge signals into a calibrated voltage output compatible with industrial machinery protection systems. This interface is crucial for ensuring signal integrity over distance and filtering out mechanical noise that can interfere with vibration monitoring. By providing precise amplification and integrated frequency filtering, this module allows for the accurate detection of high-frequency vibration events, which are often the earliest indicators of bearing wear or gear mesh inaccuracies in rotating equipment.

Technical Performance and Hardware Parameters

• Sensitivity Configuration: 50 pC/g (Transducer Charge Input)

• High-Pass Filter: 25 Hz corner frequency

• Low-Pass Filter: 350 Hz corner frequency

• Static Signal Bias: -10 Vdc (Fixed)

• Hazardous Area Certification: CENELEC (SIRA) Approved

• Physical Dimensions: 13.97 cm x 8.26 cm x 7.62 cm

• Total Shipping Weight: 2 kg

• Device Architecture: Analog Signal Conditioning

• Country of Manufacture: USA

• Protection Rating: Standard industrial enclosure compatibility

Strategic Machinery Applications

• Rolling Element Bearing Analysis: Utilized to capture high-frequency acceleration data necessary for identifying early-stage spalling or pitting in industrial bearings.

• Gearbox Health Monitoring: Optimized for vibration monitoring in gear-driven assemblies where high-frequency mesh signals must be isolated from lower frequency structural vibrations.

• Steam and Gas Turbine Protection: Provides reliable signal processing for accelerometers mounted on turbine casings to monitor blade health and shaft stability.

• Petrochemical Processing Safety: Fully certified for explosive atmospheres under CENELEC standards, making it a critical component for pump and compressor monitoring in oil and gas refineries.

• High-Speed Blower Systems: Ensures precise monitoring of high-speed air-handling equipment where unbalanced loads or mechanical looseness require high-fidelity acceleration data.

FAQ

Q: What is the significance of the 50 pC/g sensitivity setting on the 86517-01-01-01-02?

A: This specific sensitivity option ensures the module is perfectly matched to charge-type transducers that output 50 picocoulombs per g, ensuring the translated voltage signal is scaled accurately for the monitoring rack.

Q: How do the integrated filter corner frequencies benefit the monitoring system?

A: The 25 Hz high-pass and 350 Hz low-pass filters create a targeted frequency window. This rejects low-frequency floor noise and high-frequency electrical interference, focusing solely on the mechanical health of the monitored machine component.

Q: Can this module be installed in hazardous industrial zones?

A: Yes, this specific model (option 02) carries CENELEC (SIRA) agency approval, confirming its suitability for deployment in environments where potentially explosive gases or vapors may be present.

Q: Is the -10 Vdc bias voltage adjustable for different system requirements?

A: No, the -10 Vdc DC signal bias is a fixed hardware specification for this model (option 01) and is designed to provide a stable baseline for the dynamic vibration signal.

Q: Does the module include the mounting base, or is it a standalone component?

A: The 86517-01-01-01-02 is the electronic interface module itself. For a complete installation, it should be paired with the appropriate Bently Nevada terminal header and mounting hardware compatible with the 159840-01 series.