Overview
Manuals
Principle
Performance Characteristics
Features:
- 990 Vibration Transmitter
- Integrated Proximitor Sensor requires no external unit
- Test Input pin for quick verification of loop signal output, using a function generator as the input
The 990 Vibration Transmitter is intended primarily for the original equipment manufacturers (OEMs) of centrifugal air compressors or small pumps, motors, or fans who prefer to provide a simple 4 to 20 mA proportional vibration signal as the input to their machinery control system.
The transmitter is a two-wire, loop-powered device that accepts input from our 3300 NSv proximity probe and its matching extension cable (available in 5 m and 7 m system length options).
The 990-05-XX-01-05 MOD:165335-01 Bently Nevada 990 Vibration Transmitter may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 990-05-XX-01-05 MOD:165335-01 990 Vibration Transmitter Manuals(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The transmitter conditions the signal into appropriate peakto-peak vibration amplitude engineering units, and provides this value as a proportional 4 to 20 mA industry-standard signal as the input to the control system where machinery protection alarming and logic occurs.
1. Integrated Proximity Sensor: Eliminates the need for a separate proximity sensor unit, simplifying installation.
2. Diagnostic Outputs: Includes non-isolated "PROX OUT" and "COM" terminals, as well as coaxial connectors for dynamic vibration and gap voltage signals.
3. Signal Suppression Circuit: Limits output current to below 3.6 mA to prevent false alarms when probe malfunction or loose connection is detected.
4. External Adjustment: Equipped with independent zero and range potentiometers for field loop adjustment.
