Features:
- Two-wire, loop-powered transmitter with 4-20 mA output proportional to 0-4 mils pp vibration amplitude—no external power supply needed, directly interfaces with OEM control systems.
- PROX OUT coaxial connector provides non-isolated dynamic transducer signal for diagnostics, enabling connection to battery-powered or isolated test equipment without interrupting the 4-20 mA loop.
- Accepts input from 3300 NSv proximity probes with 5 m or 7 m extension cable options, offering flexible system length for various machinery configurations from small pumps to large compressors.
The 990-04-07-01-05 eliminates the need for a separate power supply. It draws all the power it needs from the 4-20 mA loop, making it ideal for OEMs who want to add vibration monitoring without redesigning their control panel power distribution. Connect the 3300 NSv proximity probe, wire the two-wire loop to your PLC or DCS input card, and the transmitter delivers a clean 4-20 mA signal proportional to 0-4 mils peak-to-peak vibration. No configuration software, no calibration—just reliable, proportional vibration data for trending and alarming.
When a machine shows unusual vibration, you need to dig deeper without shutting down the control system. The PROX OUT port on the 990-04-07-01-05 gives you that access. Plug a battery-powered oscilloscope or handheld vibration analyzer directly into the coaxial connector to view the raw dynamic waveform. Check for probe rubs, cable damage, or sensor faults while the 4-20 mA loop continues feeding the control system. This diagnostic window is invaluable for troubleshooting without risk.
For shop-floor troubleshooting with AC-powered oscilloscopes or spectrum analyzers, the 990-04-07-01-05 requires the 990/991 Test Adapter. This adapter isolates the PROX OUT signal from the 4-20 mA loop, preventing ground loops and protecting your test equipment. It also inverts the signal to match industry-standard polarity conventions, ensuring your analyzer displays correct phase information. We strongly recommend this adapter for any AC-powered diagnostic equipment to maintain machinery protection integrity.
The 990-04-07-01-05 Bently Nevada Vibration Transmitter may still be available for purchase and support from Apter Power beyond
End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 990-04-07-01-05 Vibration Transmitter Manuals,
Datasheets, Drivers, 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.
Bently Nevada 990-04-07-01-05 Vibration Transmitter Specs
General
- Manufacturer GE / Bently Nevada
- Model 990-04-07-01-05
- Condition New Original ready stock
- Product Family
990-05-07-01-05,990-10-07-01-05,990-04-07-01-00
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.
- Rotating Machinery Monitoring: Small to medium-sized pumps, motors, fans, and centrifugal air compressors.
- Extreme Environmental Industries: Oil, natural gas, chemical, and wastewater treatment industries.
- OEM Integration: Suitable for equipment manufacturers requiring simple 4–20 mA signals for mechanical protection and alarm logic.
- Integrated Proximitor Sensor: Internally integrated sensor eliminates the need for an external preamplifier (proximitor).
- Signal Diagnostic Interface: Equipped with PROX OUT (coaxial connector) and COM terminals, it outputs dynamic waveforms (200 mV/mil) for mechanical diagnostics by the analyzer.
- Not OK Logic: Built-in "Not OK/Signal Shielding" circuitry prevents erroneous high-current outputs and avoids false alarms in case of probe damage or loose wiring.
- Environmental Protection: Potted construction housing supports operating environments up to 100% condensation humidity.
- Sensor Compatibility: Only supports the Bently Nevada 3300 NSv proximity probe and its extension cable.
- Physical Installation: Use the built-in 35 mm DIN rail clamp for rail mounting, or protect with an isolation housing (such as the 141619 series) against physical damage and moisture.
- Loop Adjustment: Features non-interactive zero and gain potentiometers for easy and precise loop calibration.