Component Description
The Bently Nevada 3300/46 is a Seismic Transmitter, a key component in the Bently Nevada 3300 machinery monitoring product line. Unlike the rack-mounted modules of the 3500 system, the 3300/46 is a standalone, 2-wire, loop-powered device designed for continuous monitoring of casing or bearing housing vibration on industrial equipment.
Its primary function is to integrate a built-in velocity sensor with signal conditioning electronics. It converts the mechanical casing vibration directly into a standardized 4-20 mA analog output signal, which is proportional to the overall vibration velocity (e.g., in mm/s RMS). This signal can be easily connected to a Distributed Control System (DCS), Programmable Logic Controller (PLC), or any other data acquisition system for display, alarm, and control purposes. It is known for its simplicity, ruggedness, and ease of installation.
Key Parameters
The following table outlines the key parameters for the 3300/46 Seismic Transmitter.
| Parameter | Specification |
|---|---|
| System / Product Line | Bently Nevada 3300 |
| Primary Function | Casing Vibration (Velocity) Monitoring & 4-20 mA Transmission |
| Output Signal | 4-20 mA, two-wire, loop-powered. |
| Measurement | Overall Vibration Velocity (typically in mm/s RMS or in/s RMS). |
| Frequency Range | Standard: 4.5 Hz to 1000 Hz (45 to 60,000 CPM). |
| Dynamic Range | Typically 0 to 25 mm/s RMS (0 to 1.0 in/s RMS). |
| Power Supply | Typically 12 to 30 VDC, supplied via the 4-20 mA loop. |
| Housing Material | Stainless Steel (for corrosive environments). |
| Mounting | Directly mounted to the machine casing via a ¼-28 UNF threaded stud. |
| Connection | Conduit connection with a ½" NPT conduit fitting. |
| Operating Temperature | Typically -40°C to 85°C (-40°F to 185°F). |
| Dimensions (Body) | Approx. 80 mm in height x 32 mm diameter (3.15 in x 1.26 in). |
| Weight | Approx. 0.34 kg (0.75 lbs). |
Application Scenarios
The 3300/46 Seismic Transmitter is widely used for monitoring a broad range of industrial equipment where relative shaft vibration measurement is not applicable and a simple, robust solution is desired.
Motor and Fan Monitoring:
Application: Large AC/DC motors, industrial fans, blowers.
Function: Provides continuous monitoring of bearing housing vibration to detect unbalance, misalignment, and bearing defects. The 4-20 mA output is easily integrated into the plant's existing control system for alarm and trip functions.
Pump Casing Vibration:
Application: Vertical pumps, cooling water pumps, and general-purpose centrifugal pumps.
Function: Protects pumps by detecting issues like cavitation, impeller unbalance, and bearing wear through direct measurement of casing vibration.
Auxiliary and General Purpose Equipment:
Application: Gearboxes, compressors, mixers, and conveyors.
Function: Serves as a cost-effective and reliable vibration monitoring solution for a wide array of machinery, providing essential data for predictive maintenance programs and preventing unexpected failures.
Structural and Building Vibration:
Application: Monitoring vibration levels on structures near heavy machinery or construction sites.
Function: Used to ensure vibration levels remain within safe limits to prevent structural damage.
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
Why do so many customers choose us?
On the basis of the same quality, we provide:
- More competitive price system
- Faster logistics response
- More complete technical support (free product technical documentation)
Your trust is the driving force for our continuous progress, submit your requirements immediately to get exclusive quotes
