Introduction
The model 330103-00-09-10-02-CN is a Velocity Seismic Transmitter from the Bently Nevada 3300 series. This device is designed to monitor the casing or absolute vibration of rotating machinery, such as fans, pumps, and motors. It integrates a piezoelectric accelerometer with a built-in electronic circuit that converts the raw acceleration signal into a proportional 4-20 mA DC output velocity signal. This standardized signal is easily transmitted over long distances to control systems, PLCs, or DCS for continuous machinery protection and monitoring. The "-CN" suffix typically indicates a version configured for or destined for the Chinese market.
Parameters / Specifications
The following table outlines the key technical parameters for the 330103-00-09-10-02-CN transducer.
| Parameter | Specification |
|---|---|
| Model Number | 330103-00-09-10-02-CN |
| Description | 4-20 mA Velocity Seismic Transmitter |
| Physical Dimensions | Approx. 70 mm (2.76 in) in height (excluding connector) x 35 mm (1.38 in) diameter (typical housing). [Varies by specific housing style] |
| Weight | Approx. 0.3 kg (0.66 lb) |
| Measurement | Casing Vibration (Velocity) |
| Output Signal | 4-20 mA, 2-Wire |
| Dynamic Range | 0 to 25.4 mm/s (0 to 1.0 in/s) True Peak Velocity (standard range) |
| Frequency Range | 4.5 Hz to 1000 Hz (270 CPM to 60,000 CPM) |
| Power Supply | 12 to 30 VDC, typical loop power |
| Sensitivity | 0.63 mA/mm/s (16 mA/in/s) |
| Operating Temperature | -40°C to +85°C (-40°F to +185°F) |
| Housing Material | Stainless Steel |
| Electrical Connection | Integral 2-pin military-style connector or terminal compartment (varies by order code). |
| Compliance | CE marked. The "-CN" may indicate specific Chinese market certifications. |
Note: The exact dimensions and weight can depend on the specific mechanical configuration (e.g., top exit or side exit cable). Always consult the factory datasheet for the precise configuration.
Application Scenarios
The 330103-00-09-10-02-CN transmitter is widely used in various industrial applications for robust and simple vibration monitoring:
Continuous Machinery Protection:
Mounted directly on machine casings of medium-speed equipment like pumps, fans, blowers, and compressors to provide a continuous 4-20 mA signal representing overall vibration severity. This signal is used for alarms and shutdowns to prevent machine damage.
Plant-Wide Monitoring Systems:
Ideal for integration into Distributed Control Systems (DCS) or Programmable Logic Controllers (PLC) due to its standard 4-20 mA output, allowing for centralized monitoring of hundreds of machines from a control room.
Monitoring of Motor-Driven Equipment:
Excellent for monitoring the vibration of electric motors and the equipment they drive, helping to detect issues like imbalance, misalignment, and mechanical looseness.
HVAC Systems:
Used on fans and blowers in Heating, Ventilation, and Air Conditioning (HVAC) systems to ensure smooth operation and provide early warning of degrading conditions.
Cooling Tower Fans and Pumps:
Its rugged, seismic design makes it suitable for outdoor and harsh environments, such as on cooling tower fans and large water-circulating pumps.
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