Bently Nevada 990-05-50-02-00 Vibration Transmitter
Description:
990-05-50-02-00 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 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.
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‡.
· Non-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 connection.
· 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)
08 0-8 mils pp (0-200 μm pp)
10 0-10 mils pp (0-250 μm pp)
B: System Length Option
50 5.0 meters (16.4 feet)
70 7.0 meters (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
Mon/Sat 9.00am to 7.00pm
