Bently Nevada 990-04-70-02-05 990 Vibration Transmitter

Applications

• Provides continuous vibration monitoring for rotating machinery using a loop-powered 4–20 mA output signal.
Used to convert proximity probe vibration data into a direct process signal for PLC and DCS systems.

• Commonly applied on motors, pumps, compressors, fans, and small turbine-driven equipment.
Supports condition monitoring and basic machinery protection functions in industrial environments.

• Integrated into OEM machinery packages and retrofit monitoring systems.
Enables simplified vibration trending without requiring a full rack-based monitoring system.

• Widely used in power generation auxiliary systems, oil & gas facilities, and general industrial automation.
Helps operators detect abnormal vibration conditions early and improve equipment reliability.

Key Advantages

• Integrated signal conditioning design.
Converts raw probe input into a stable 4–20 mA vibration output signal.

• Simple loop-powered operation.
Reduces wiring complexity and eliminates the need for separate monitoring racks.

• Compatible with Bently Nevada proximity probe systems.
Ensures accurate vibration measurement when paired with 3300 NSv transducers.

• Compact and industrial-grade construction.
Suitable for installation in space-constrained industrial control environments.

• Reliable vibration trend monitoring.
Supports early detection of mechanical degradation and process instability.

Technical FAQs

1. What is the primary function of the 990-04-70-02-05 vibration transmitter?
It converts vibration signals from a proximity probe into a proportional 4–20 mA output for monitoring systems.

2. What type of signal does this transmitter output?
It outputs a standard industrial 4–20 mA analog signal.

3. What sensors are compatible with this transmitter?
It is designed for use with Bently Nevada 3300 NSv proximity probes and matching extension cables.

4. Does this device require a separate monitoring rack?
No, it is a standalone transmitter and does not require a 3500-series rack system.

5. What equipment is typically monitored with this device?
It is used on pumps, motors, compressors, fans, and small rotating machinery.

6. Can it be used for machinery protection?
Yes, it supports basic vibration protection and condition monitoring applications.

7. Is it suitable for continuous operation?
Yes, it is designed for continuous industrial monitoring applications.

8. Does it support digital communication protocols?
No, it provides only analog 4–20 mA output.

9. What industries commonly use this transmitter?
Power generation, oil & gas, petrochemical, water treatment, and general manufacturing.

10. What is the main benefit of using this transmitter?
It simplifies vibration monitoring by providing a direct, reliable analog signal output.