Bently Nevada 990-04-50-01-00 Vibration Transmitter | 3300 NSv

Product Overview

The Bently Nevada 990-04-50-01-00 serves as a specialized signal conditioner for rotating machinery with limited installation clearance. This 3300 NSv transmitter converts the displacement signal from a non-contacting proximity probe into a linear 4-20 mA current loop. It specifically targets small-bore machinery where standard probes experience signal distortion from side-view interference. We supply this unit as 100% Brand New and Original, manufactured in the U.S.A., ensuring factory-grade accuracy for your plant's vibration monitoring loop.

Part Number Breakdown

The 990-04-50-01-00 utilizes a modular suffix system to define its measurement scale and mounting configuration:

Technical Specifications

This transmitter delivers precise machinery health data directly to your control system:

• Input: Accepts 1 non-contacting 3300 NSv Proximity Probe and extension cable.

• Full-Scale Output: 4-20 mA DC (Proportional to 0-4 mils / 100 μm).

• Power Supply: Requires +12 to +35 Vdc input at the transmitter terminal.

• Maximum Loop Resistance: 1,000 Ω (including cable) at 35 Vdc.

• Current Limiting: 23 mA typical to prevent downstream over-current.

• Calibration: Factory-set for 5.0-meter total system length.

• Country of Origin: Made in U.S.A.

Engineering Advantages

The 990-04-50-01-00 excels in specific industrial environments where standard sensors fail:

• Small Shaft Specialty: The NSv (Narrow Side View) technology allows the sensor to ignore adjacent metal surfaces. This permits accurate vibration measurement on shafts as small as 50 mm (2 inches), solving the "cross-talk" issues common in tight mechanical housings.

• Simplified Infrastructure: The 4-20 mA output bypasses the need for expensive, rack-based vibration monitors. You wire the transmitter directly into existing PLC/DCS analog input cards, significantly lowering the total cost-per-point for balance-of-plant assets.

• Rapid Field Deployment: Integrated 35 mm DIN rail clips facilitate instant installation in standard electrical cabinets. The loop-powered architecture requires only two wires, reducing cable costs and field labor.

• Diagnostic Portability: A buffered "Prox Out" terminal provides access to the raw analog signal. Field technicians connect portable data collectors here to perform spectral analysis or view shaft orbits without disconnecting the protection loop.

FAQs

Can I use a standard 3300 XL 8mm probe with this transmitter?

No. This transmitter only accepts a 3300 NSv Proximity Probe. The 990-04 series uses specific internal circuitry tuned for the NSv probe's electrical characteristics. Using a standard 8mm probe will result in incorrect vibration readings and signal clipping.

What is the maximum distance I can run the 4-20 mA signal?

With a 35 Vdc power supply, the unit supports a 1,000 Ω maximum loop resistance. This typically allows for signal cable runs exceeding 1,000 meters depending on wire gauge, making it ideal for remote monitoring in large-scale plants.

Does this transmitter require field calibration?

No. The 990-04-50-01-00 arrives factory-calibrated for a 5.0-meter total system length. Ensure your probe and extension cable combined total exactly 5.0 meters to maintain the ±1% accuracy specification.

Is this a refurbished or unused component?

We guarantee this unit is 100% Brand New. It ships in original Bently Nevada factory packaging with original serial numbers, ensuring the full manufacturer's lifespan and reliability for your critical machinery.