Bently 990-10-XX-03-00 Vibration Transmitter

• Output Signal: Provides a two-wire 4-20 mA DC current signal proportional to the vibration amplitude.
• Power Supply: Requires a +12 to +35 VDC input at the transmitter terminals.
• Accuracy: ±1.5% of the specified full-scale range.
• Linear Range: 0.5 to 1.75 mm (depending on the specific model and configuration).
• Sensitivity: 7.87 mV/μm (200 mV/mil).
• System Length Options: 5 meters (16.4 feet) or 7 meters (23 feet).
• Mounting Options: DIN rail clip or spacer mounting screws.
• Hazardous Area Certifications: Optional CSA/NRTL/C and ATEX certifications for use in hazardous environments.

Functional Characteristics

• Integrated Proximitor Sensor: Eliminates the need for external devices, reducing system complexity and cost.
• Dynamic Signal Output: Non-isolated “PROX OUT” and “COM” terminals, along with a coaxial connector, provide dynamic vibration and gap voltage signal outputs for diagnostic purposes.
• Zero and Span Adjustments: Zero and span potentiometers support loop adjustments without mutual interference, allowing for easy calibration in the field.
• Function Generator Input: Enables quick verification of loop signal output by using a function generator as input to the test input pins.
• Power-Up Suppression Circuit: Eliminates signal errors caused by line voltage transients, ensuring stable operation during power-up.
• Abnormal/Signal Failure Circuit: Prevents high output or false alarms due to proximity probe failure or loose connections, enhancing system reliability.
• Robust Design: Sealed structure suitable for high-humidity environments (up to 100% condensation), ensuring long-term stability and durability.
• Compatibility: Compatible with 3300 NSV proximity probes, allowing installation in the smallest gaps typical of centrifugal air compressors.

Application Scenarios

The Bently 990-10-XX-03-00 vibration transmitter is widely used in various industrial sectors for monitoring the vibration of rotating machinery, including:

• Centrifugal Air Compressors: Monitors vibration levels to prevent mechanical failures and ensure efficient operation.
• Small Pumps and Motors: Provides real-time vibration data for predictive maintenance and fault diagnosis.
• Fans and Blowers: Detects abnormal vibration patterns to avoid unexpected downtime and costly repairs.
• Other Rotating Equipment: Suitable for any application where vibration monitoring is critical for mechanical protection and process control, such as in the steel, power, metallurgy, chemical, petrochemical, and mechanical industries.