Bently Nevada 990 Vibration Transmitter 990-05-50-01-00
Description
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 systemlength options).
The transmitter conditions the signal into appropriate peak to-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†.
The 990 transmitter provides the following notable features:
Integrated Proximitor Sensor requires no external unit
Non-isolated "PROX OUT" and "COM" terminals plus a coaxial connector to provide a dynamic vibration and gap voltage signal output for diagnostics‡.
lNon-interacting zero and span potentiometers under the Transmitter label supports loop adjustment.
Test Input pin for quick verification of loop signal output, using a function generator as the input.
A Not OK/Signal Defeat circuit prevents high outputs or false alarms due to a faulty proximity probe or loose connectio
Choice of DIN-rail clips or bulkhead mounting screws as standard
options simplifies mounting.
Potted construction for high humidity (up to 100% condensing)
environments. Compatibility with 3300 NSv proximity
probe allows transducer installation in small areas with minimal
clearance, typical of centrifugal air compressors.
Ordering Information
990-AA-BB-CC-DD
A: Full-scale Option |
04 | 0-4 mils pp (0-100 μm pp) |
05 | 0-5 mils pp (0-125 μm pp) |
B: System Length Option |
50 | 5.0 metres (16.4 feet) |
70 | 7.0 metres (23.0 feet) |
C: Mounting Option |
01 | 35 mm DIN rail clips |
02 | Bulkhead screws |
03 | DIN clips and screws |
D:Agency Approval Option |
00 | Not required |
01 | CSA Division 2 |
05 | CSA Division 2, ATEX Zone 0, ATEX |
Zone 2 and includes ABS |
maritime approval |
Related Part Number:
| 990-08-XX-03-CN MOD:167541-08 | 990-10-XX-01-00 MOD:163930-01 |
| 990-04-XX-01-00 MOD: 165335-01 | 990-05-XX-03-CN MOD:165335-01 |
| 990-08-XX-01-00 MOD: 283278-01 | 990-04-70-01-CN |
| 990-05-70-01-CN | 990-10-XX-02-00 MOD: 163930-0 |
| 990-04-XX-01-CN MOD:147202-01 | 990-10-XX-01-CN MOD:285269-01 |
| 990-04-XX-01-CN MOD: 165335-01 | 990-05-XX-01-00 MOD:147202-01 |
| 990-05-50-01-CN | 990-05-XX-01-00 MOD 289549-01 |
| 990-05-XX-01-CN MOD:168251-01 | 990-05-XX-01-00 MOD:165335-01 |
| 990-05-50-02-00 | 990-10-XX-01-CN MOD:167541-01 |
| 990-05-50-01-00 | 990-05-XX-01-CN MOD:147202-01 |
| 990-05-70-03-00 | 990-05-50-03-CN |
| 990-05-70-03-CN | 990-04-50-01-CN |
| 990-04-50-02-00 | 990-05-70-01-00 |
