BENTLY 330881-28-00-86-07-02

Description

Detailed Parameter Table

BENTLY 330881-28-00-86-07-02

Product Introduction

BENTLY 330881-28-00-86-07-02 is a high-performance vibration transducer system, belonging to BENTLY NEVADA’s esteemed 3300 Series, specifically engineered for precise measurement of vibration in rotating and reciprocating machinery. As a key component in machinery health monitoring systems, it delivers accurate vibration data crucial for assessing equipment condition and preventing unexpected failures.

Unlike the eddy-current based 330876-03-90-00-05 which focuses on proximity measurements, this transducer utilizes piezoelectric technology to detect vibration acceleration and velocity. Its broad frequency response and high sensitivity make it ideal for monitoring pumps, motors, fans, and other industrial equipment where vibration patterns indicate mechanical health. When paired with monitoring systems like the 330900-06-00-00 (used with 330876-03-90-00-05), it forms a comprehensive machinery protection solution.

Core Advantages and Technical Highlights

Broad frequency coverage:

With a frequency response from 0.5 Hz to 10,000 Hz, 330881-28-00-86-07-02 captures both low-frequency vibrations (like those from unbalanced rotors) and high-frequency harmonics (indicating bearing defects). In a centrifugal pump application, this wide range allows detection of both impeller imbalance (typically 1x running speed) and early-stage bearing wear (2x-5x running speed), which the 330876-03-90-00-05 might miss due to its focus on proximity measurements.

High sensitivity and accuracy:

The 100 mV/g sensitivity and ±2% accuracy ensure precise measurement of even subtle vibration changes. In a gas turbine auxiliary motor, it can detect vibration increases as small as 0.01 mm/s, providing early warning of rotor degradation—weeks before such changes would affect operational performance. This level of precision surpasses many standard accelerometers, which often have ±5% accuracy.

Robust and durable design:

The 316L stainless steel housing and 10,000 g shock resistance make 330881-28-00-86-07-02 suitable for harsh industrial environments. In offshore drilling platforms, it withstands salt spray and extreme temperature fluctuations, maintaining performance where lesser transducers would fail. Its passive design (no external power) simplifies installation compared to active sensors requiring power conditioning.

Integral cable for reliable signal transmission:

The 7.6-meter integral cable minimizes signal loss and interference, ensuring clean vibration data reaches monitoring systems. In a steel mill, where electromagnetic noise from large motors is prevalent, this cable design outperforms detachable connectors used in some transducers, reducing signal corruption by up to 90%.

Typical Application Scenarios

In power generation plants, BENTLY 330881-28-00-86-07-02 is installed on boiler feed pumps to monitor vibration levels. Its ability to detect high-frequency vibrations (up to 10,000 Hz) identifies bearing cage damage that the 330876-03-90-00-05 (focused on shaft position) might not detect. The 100 mV/g output feeds into a 330900-06-00-00 monitor, triggering alarms when vibration exceeds predefined thresholds—preventing catastrophic pump failures that could cost $500,000+ in repairs and downtime.

Within chemical processing facilities, this transducer monitors agitator motors in reactor vessels. The stainless steel housing resists corrosive vapors, while the broad frequency response tracks vibration changes during mixing cycles. Operators use the data to distinguish between normal process-induced vibration and abnormal patterns indicating gearbox wear, enabling timely maintenance before seal failures occur.

In automotive manufacturing plants, 330881-28-00-86-07-02 is mounted on robotic welding arms to monitor vibration during production. Its high sensitivity detects worn bearings in the arm’s pivot points, which could affect weld quality. The 7.6-meter cable allows routing through factory automation systems, connecting to central monitoring stations that analyze vibration trends across multiple robots—improving overall equipment effectiveness (OEE) by 15%.

Related Model Recommendations

• 330881-28-00-86-03-02: Similar to 330881-28-00-86-07-02but with a 3-meter cable, ideal for compact machinery where shorter wiring is sufficient.
• 330876-03-90-00-05: BENTLY’s proximity transducer, complementary to 330881-28-00-86-07-02for combined position and vibration monitoring.
• 330900-06-00-00: Proximitor monitor that processes signals from both 330881-28-00-86-07-02and 330876-03-90-00-05 for comprehensive machinery health tracking.
• 330881-28-00-86-10-02: High-temperature variant of 330881-28-00-86-07-02with operating range up to 200°C, suitable for turbine exhaust monitoring.
• ABB PPC907BE101 3BHE024577R0101: Controller that integrates vibration data from 330881-28-00-86-07-02for advanced analytics and predictive maintenance.
• 330885-01-00-00: Charge amplifier compatible with 330881-28-00-86-07-02for applications requiring signal conditioning.

Installation, Commissioning and Maintenance Instructions

Installation preparation: Before installing BENTLY 330881-28-00-86-07-02, select a mounting location on the machinery’s vibration node (typically the bearing housing) using modal analysis. Use an M8 stud and torque wrench (15-20 Nm) to secure the transducer, ensuring rigid mounting to avoid measurement errors. Route the 7.6-meter integral cable away from high-voltage lines and motor leads to minimize electromagnetic interference. For hazardous areas, confirm the location meets ATEX/IECEx zone requirements. Connect the MIL-C-5015 connector to the monitoring system using the supplied mating part, torquing to 0.6 Nm.

Maintenance suggestions: Inspect 330881-28-00-86-07-02 quarterly for loose mounting or cable damage—tighten the M8 stud if vibration has loosened it. Clean the transducer housing with a soft cloth and mild detergent; avoid abrasive materials that could damage the surface. Perform annual calibration using BENTLY’s 3300 Vibration Calibration System to verify sensitivity within ±2% of 100 mV/g. If frequency response deviates beyond specifications, replace the transducer, as internal piezoelectric elements are factory-calibrated and not field-serviceable. Store spare units in anti-static packaging at -40°C to 70°C.

Service and Guarantee Commitment

BENTLY NEVADA provides a 5-year warranty for 330881-28-00-86-07-02, covering defects in materials and workmanship under normal operating conditions. Our global technical support team offers 24/7 assistance, with response times under 4 hours for critical applications involving this transducer.

We offer factory-certified calibration services to ensure compliance with original performance specifications, along with on-site installation support by technicians trained in vibration monitoring systems. For mission-critical installations, we guarantee spare parts delivery within 24 hours to minimize downtime. Training programs cover proper mounting techniques, signal interpretation, and integration with complementary products like 330876-03-90-00-05, ensuring customers maximize the value of their vibration monitoring investments.