Bently Nevada 990-04-70-01-05 990 Vibration Transmitter

Bently Nevada 990-04-70-01-05 990 Vibration Transmitter is designed for OEMs (Original Equipment Manufacturers) of centrifugal air compressors, small pumps, motors, and fans that require a method for converting vibration data into a standard 4-20 mA signal for integration into their machinery control systems. This device is particularly useful in applications where continuous monitoring and protection are needed, but where advanced vibration analysis systems are not necessary or desired.

Fuctions & Features

• Loop-Powered 2-Wire System:Bently Nevada 990-04-70-01-05 Vibration Transmitter operates on a 2-wire, loop-powered configuration, simplifying installation and reducing the need for additional power sources. It receives input from a 3300 NSv™ proximity probe and its matching extension cable, available in 5 m and 7 m system lengths.

• Integrated Proximitor Sensor:Unlike many systems that require a separate Proximitor sensor, Bently Nevada 990-04-70-01-05 Transmitter integrates the Proximitor Sensor directly into the unit.

• Output:PROX OUT and COM terminals, along with a coaxial connector, provide dynamic vibration and gap voltage signals that can be used for diagnostic purposes. This allows users to monitor the performance and health of the system beyond just the basic 4-20 mA output.
• Zero and Span Potentiometers:Non-interacting zero and span potentiometers are located under the Transmitter label, enabling loop adjustment for fine-tuning the system to the specific needs of the application.

• Test Input Pin:The Test Input pin allows quick verification of the loop signal output. By using a function generator as the input, users can verify that the system is functioning correctly without needing to make physical measurements or adjustments in the field.

• Not OK/Signal Defeat Circuit:A Not OK/Signal Defeat circuit is included to prevent false alarms or high outputs caused by a faulty proximity probe or loose connections.

Specification