Introduction to the 3300/45-03-02-00-00
The 3300/45-03-02-00-00 is a Seismic Transmitter from the Bently Nevada 3300 monitoring system. This device is a 4-20 mA loop-powered vibration transmitter designed to continuously measure and monitor the casing vibration (in velocity or acceleration) of industrial machinery. It converts the mechanical vibration signal from a built-in or externally connected sensor into a standardized 4-20 mA analog output signal, which is directly proportional to the vibration level. This signal can be easily connected to a PLC, DCS, or any control system for continuous machine condition monitoring, providing a simple and reliable way to track overall machine health.
Technical Parameters
The key technical specifications for the 3300/45 Seismic Transmitter are as follows:
| Parameter | Specification |
|---|---|
| Part Number | 3300/45-03-02-00-00 |
| Description | Seismic Vibration Transmitter (4-20 mA) |
| Output Signal | 4-20 mA, two-wire, loop-powered |
| Measured Parameter | Casing Vibration (Velocity, e.g., mm/s or in/s RMS) |
| Frequency Range | Typically 4.5 Hz to 1000 Hz (for velocity measurement) |
| Measurement Range | Configurable, e.g., 0 to 25.4 mm/s (0 to 1.0 in/s) RMS full scale. |
| Power Supply | Typically 12 to 30 VDC (provided by the loop power) |
| Electrical Connection | Conduit entry or terminal block (2-wire) |
| Housing Material | Cast aluminum or stainless steel (for hazardous areas) |
| Mounting | 1/4-28 UNF threaded stud or M10 x 1.5 threaded hole. |
| Dimensions (Approx.) | Varies by housing, but a common size is approx. 80 mm x 80 mm x 60 mm (3.15 in x 3.15 in x 2.36 in) |
| Weight | Approx. 0.5 - 0.9 kg (1.1 - 2.0 lbs) depending on housing |
| Operating Temperature | -40°C to +85°C (-40°F to +185°F) |
| Compliance | Often available with ATEX, IECEx, or other hazardous area certifications. |
Application Scenarios
The 3300/45 transmitter is widely used for cost-effective, continuous condition monitoring of a broad range of industrial machinery where a simple, robust vibration signal is required for a control system.
General Purpose Machinery Monitoring:
Pumps & Fans: Monitoring motors, bearings, and impellers on centrifugal pumps, cooling tower fans, and industrial blowers for imbalance, bearing wear, or cavitation.
Compressors: Monitoring the casing of reciprocating and smaller centrifugal compressors.
Conveyors & Gearboxes:
Tracking the health of motors, bearings, and gears on long conveyor systems and in large gearboxes.
Critical but Less Complex Assets:
Providing a simple vibration signal to a plant's DCS for machines that do not require the full diagnostic capabilities of a larger system like the 3500.
HVAC Systems:
Monitoring large chillers and air handling units in commercial and industrial buildings.
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