Introduction
The component with part number 330102-00-27-10-02-05 is a Proximitor® Sensor / Seismic Transmitter from Bently Nevada* (a Baker Hughes company). This device is an integrated, 2-wire, 4-20 mA vibration transmitter designed to measure the absolute (casing) vibration of machinery.
It combines a robust seismic sensor (typically a velocity transducer or an integrated piezoelectric accelerometer) with built-in signal conditioning electronics. The transmitter converts the mechanical vibration directly into a standardized 4-20 mA output signal, which is proportional to the vibration level. This makes it ideal for direct integration into a wide range of control and monitoring systems, such as PLCs and DCSs, without the need for separate signal conditioners.
Parameters
The following table outlines the key technical parameters for the 330102-00-27-10-02-05 transmitter.
| Parameter | Specification |
|---|---|
| Part Number | 330102-00-27-10-02-05 |
| Description | 4-20 mA Seismic Vibration Transmitter |
| Output Signal | 2-Wire, 4-20 mA |
| Measurement Type | Velocity (e.g., mm/s, in/s RMS or Peak) |
| Frequency Range | Typically 4.5 Hz to 1000 Hz (or similar, depending on the internal sensor) |
| Measuring Range | Example: 0 to 25.4 mm/s (0 to 1.0 in/s) True Peak (exact range is model-specific) |
| Power Supply | Typically 12 to 30 VDC loop power |
| Electrical Connection | 1/2" NPT conduit entry |
| Housing Material | Stainless steel or ruggedized metal casing |
| Operating Temperature | -40°C to 85°C (-40°F to 185°F) or similar |
| Mounting | 1/4-28 UNF threaded stud (standard for industrial accelerometers/transmitters) |
| Dimensions (Approx.) | Diameter: ~35 mm (1.38 in), Height: ~80 mm (3.15 in) Varies based on specific model configuration. |
| Weight (Approx.) | ~0.5 kg (1.1 lb) |
Application Scenarios
This 4-20 mA vibration transmitter is designed for cost-effective, reliable monitoring of overall machine casing vibration on a wide array of industrial equipment. Key application scenarios include:
General Purpose Machinery Monitoring:
Ideal for continuous monitoring of motors, pumps, fans, compressors, and gearboxes that are critical to the process but may not require the high-level diagnostics of a full proximity probe system.
Direct PLC/DCS Integration:
The standardized 4-20 mA output allows for easy connection to virtually any Programmable Logic Controller (PLC) or Distributed Control System (DCS), enabling alarm setpoints and continuous trend monitoring within the main plant control system.
Non-Critical Asset Protection:
Provides essential protection by triggering alarms or automatic shutdowns in the control system when vibration levels exceed pre-defined limits, helping to prevent catastrophic failure and unscheduled downtime.
Condition-Based Maintenance (CbM) Programs:
Serves as a fundamental sensor for CbM initiatives, providing reliable vibration data that maintenance teams can use to track machine health over time and schedule repairs before failures occur.
Applications Where Proximity Probes Are Not Suitable:
Used on machines with rolling element bearings or on structural components where measuring shaft relative vibration is not possible or necessary. It measures the absolute vibration of the casing or structure itself.
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