Introduction
The model 330104-00-08-10-02 is a 4-20 mA DC Acceleration Seismic Transmitter from the Bently Nevada 3300 series. This device is designed to measure the high-frequency casing or absolute vibration of rotating machinery, expressed as acceleration. It integrates a piezoelectric accelerometer with internal signal conditioning electronics to produce a standardized, loop-powered 4-20 mA output that is directly proportional to the acceleration level. This makes it particularly sensitive to high-frequency phenomena, such as those generated by rolling element bearing defects, gear meshing, and cavitation. The robust, stainless steel housing ensures reliability in harsh industrial environments.
Parameters / Specifications
The following table outlines the key technical parameters for the 330104-00-08-10-02 transducer.
| Parameter | Specification |
|---|---|
| Model Number | 330104-00-08-10-02 |
| Description | 4-20 mA DC Acceleration Seismic Transmitter |
| Physical Dimensions | Approx. 78.7 mm (3.10 in) in height (excluding connector) x 35.1 mm (1.38 in) diameter. [Based on standard housing for this configuration] |
| Weight | Approx. 0.34 kg (0.75 lb) |
| Measurement | Casing Vibration (Acceleration) |
| Output Signal | 4-20 mA, 2-Wire, Loop Powered |
| Acceleration Range | 0 to 50 g Peak (typical for this configuration) |
| Frequency Response | 2.5 Hz to 8,000 Hz (150 CPM to 480,000 CPM) |
| Power Supply | 12 to 30 VDC |
| Sensitivity | 0.32 mA/g (for a 50 g range) |
| Electrical Connection | Integral, two-pin, military-style connector (e.g., MS3106A-20-9S). The -02 suffix typically specifies this connector style. |
| Housing Material | Stainless Steel |
| Operating Temperature | -40°C to +85°C (-40°F to +185°F) |
| Compliance | CE Marked |
*Note: The dimensions and weight are typical values for this model series. The specific suffix -00-08-10-02 defines the internal accelerometer sensitivity, acceleration range, and connector details. The extended high-frequency response (up to 8 kHz) is a key characteristic of this acceleration transmitter. Always verify against the official manufacturer's datasheet for the precise configuration.*
Application Scenarios
This acceleration transmitter is specialized for detecting high-frequency vibration components that are often early indicators of specific mechanical faults.
Bearing Fault Detection:
Primarily used for early detection of rolling element bearing defects in motors, pumps, and fans. The high-frequency output is ideal for capturing the shock pulses and ringing generated by spalls, pits, and cracks in bearing races and elements, often visible through envelope or demodulation signal processing.
Gearbox Monitoring:
Excellent for monitoring gear meshing frequencies and sidebands in gearboxes. The wide frequency response allows it to detect tooth wear, chipping, and misalignment by analyzing the high-frequency vibration signatures.
Cavitation Detection in Pumps:
Used to detect cavitation in centrifugal pumps, which generates a distinct, random, high-frequency broadband vibration signature that is clearly captured by an acceleration transmitter.
High-Speed Machinery:
Suitable for monitoring compressors, turbines, and other high-speed machinery where vibration frequencies are high and acceleration provides a more sensitive measurement of dynamic forces.
Complementary Monitoring with Velocity:
Often used in conjunction with velocity transmitters on the same asset. The velocity signal monitors overall machine health (imbalance, misalignment), while this acceleration signal provides dedicated insight into the condition of bearings and gears.
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