Part Number: 990-04-50-01-00
Model: 2-Wire Vibration Transmitter
Brand: Bently Nevada
Condition: New & Original in Factory Packing
Factory Warranty: 12 Months
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Model
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990
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2-Wire Vibration Transmitter
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Full-scale Option
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04
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0-4 mils pp (0-100 µm pp)
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System Length Option
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50
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5.0 metres (16.4 feet)
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Mounting Option
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01
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35 mm DIN rail clips
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Agency Approval Option
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00
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Not required
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The 990 vibration transmitter is primarily designed for use by original equipment manufacturers (OEMs) of centrifugal air compressors, small pumps, motors, or fans. OEMs prefer to provide a simple 4 to 20 mA proportional vibration signal as an input for their mechanical control systems. This transmitter is a two-wire, loop-powered device that accepts input from the 3300 NSv* proximity probe and its matching extension cables (with available system lengths of 5 meters and 7 meters).
The transmitter conditions the signal into the appropriate peak-to-peak vibration amplitude engineering units and provides the value as a 4 to 20 mA proportional industrial standard signal for input into the control system for mechanical protection alarms and logic.
Key features of the 990 transmitter include:
Integrated Proximitor* sensor with no external device required.
Non-isolated "PROX OUT" and "COM" terminals, along with a coaxial connector, for outputting dynamic vibration and gap voltage signals used for diagnostics.
Non-interactive zero and range potentiometers under the transmitter label for loop adjustment.
Test input pins that can use a function generator as input for quick verification of loop signal output.
"Uncertain"/"Signal Failure" circuit that prevents high output or false alarms caused by proximity probe failures or loose connections.
Optional DIN rail clips or mounting screws as standard options for easy installation.
Tank-style housing, suitable for high humidity environments (condensation up to 100%).
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