990-05-50-02-01 | Bently Nevada 990 Series Vibration Transmitter

Product Overview

The Bently Nevada 990-05-50-02-01 provides continuous machinery protection by converting vibration data into a robust 4-20 mA DC signal. This two-wire, loop-powered transmitter specifically interfaces with 3300 NSv Proximity Probes, making it the primary choice for monitoring centrifugal air compressors or other machinery with small shaft diameters. We offer this unit as a 100% brand new, original factory component to ensure maximum system uptime.

Part Number Breakdown

The 990-05-50-02-01 configuration utilizes the following engineering logic:

Technical Specifications

This transmitter conditions signals with high precision for direct PLC/DCS integration:

• Primary Input: Bently Nevada 3300 NSv Proximity Probe.

• Linear Output: 4 to 20 mA (proportional to peak-to-peak vibration).

• Frequency Response: 10 Hz to 1,000 Hz (600 to 60,000 cpm) ±10%.

• System Length Compatibility: Calibrated for a 5-meter total electrical length.

• Mounting: Standard 35 mm DIN rail installation.

• Certification: CSA Division 2 for hazardous area safety.

• Weight: Approximately 0.43 kg (unit only).

Engineering Advantages

• Self-Contained Signal Conditioning: The 990-05-50-02-01 eliminates the need for external Proximitor units. This reduces the total footprint in control cabinets and simplifies field wiring.

• Streamlined Verification: The transmitter includes a dedicated Test Input. Maintenance personnel can inject a signal from a function generator to verify the 4-20 mA loop integrity without dismantling the probe assembly.

• Optimized for Narrow Targets: Designed for the 3300 NSv system, this transmitter maintains signal linearity even when monitoring shafts with small diameters or when the probe faces restricted side clearances.

• Hazardous Area Resilience: The CSA Division 2 approval ensures safe operation in environments containing volatile gases, protecting your facility against ignition risks in standard industrial processing zones.

FAQs

• Can I use a 9-meter cable with this specific transmitter?

  No. The "50" option code designates a 5-meter system length. You must use a combination of probe and extension cable that totals 5 meters to maintain measurement accuracy.

• How does this transmitter handle power loss?

  As a loop-powered device, the transmitter signal drops below 3.6 mA or to 0 mA upon power failure, allowing the connected PLC/DCS to trigger a "Sensor Fault" or "Not OK" alarm immediately.

• Is any specialized software required for calibration?

  No. The 990-05-50-02-01 provides a linear 4-20 mA output. You simply scale the analog input on your control system to match the 0-5 mils pp range.

• Does this unit come with a warranty?

  Yes. Since we supply only 100% brand new Bently Nevada hardware, the product includes the standard manufacturer's assurance of quality and performance.