990-05-50-03-05 | Bently Nevada 3300 XL Vibration Transmitter

Product Overview

The Bently Nevada 990-05-50-03-05 functions as a high-precision signal conditioner within the 3300 XL Proximity Transducer System. This transmitter facilitates continuous shaft vibration and axial position monitoring by converting raw eddy current signals into a linear 4-20 mA current loop. It specifically serves balance-of-plant machinery where operators require direct integration into a PLC or DCS without the complexity of a dedicated monitoring rack. We supply this unit as 100% Brand New and Original to guarantee the integrity of your machinery protection loop.

Part Number Breakdown

The 990-05-50-03-05 follows the standard Bently Nevada configuration logic for 3300 XL systems:

Technical Specifications

This transmitter delivers laboratory-grade accuracy to the factory floor:

• Output Signal: 4-20 mA loop-powered current.

• Accuracy: ±1% typical (under standard conditions); ±2% maximum (under harsh industrial conditions).

• Frequency Response: Supports dynamic analysis up to 1 kHz.

• Power Input: Requires 18 to 30 VDC supply.

• Probe Compatibility: Calibrated for 8mm probe tip diameters.

• Housing Material: High-grade Stainless Steel for the probe/connector assembly.

• Connector Type: Bently Nevada standard gold-plated coaxial connector.

Engineering Advantages

The 990-05-50-03-05 solves critical industrial pain points through superior hardware engineering:

• Direct Control System Interface: The 4-20 mA output eliminates the need for external Proximitor® units. You can terminate field wiring directly into standard analog input cards, significantly reducing the cost-per-point for vibration monitoring on pumps, fans, and compressors.

• Superior EMI Shielding: The transmitter's internal circuitry rejects high-frequency electromagnetic interference commonly found near Variable Frequency Drives (VFDs). This ensures the 4-20 mA signal remains stable and free from "spike" induced false trips.

• Keyphasor® Ready: Beyond simple vibration amplitude, this system supports Keyphasor® reference inputs. This allows engineers to obtain phase information for advanced shaft balancing and diagnostic analysis.

• Simplified Troubleshooting: The unit provides a buffered "Prox Out" signal. Field technicians can connect a portable analyzer to verify the gap voltage or view the raw orbit without interrupting the 4-20 mA protection loop.

FAQs

Must I match the extension cable length to the transmitter?

Yes. This model (suffix -05) requires a 5.0-meter total system length. You must ensure the sum of the probe lead and the extension cable equals exactly 5.0 meters. Any mismatch will lead to a non-linear output and incorrect vibration readings.

What power supply do you recommend for this unit?

The transmitter operates on an 18-30 VDC range. We recommend a regulated 24 VDC industrial power supply. Ensure the supply can handle the typical 23 mA current draw per transmitter in your loop.

Is this unit compatible with non-3300 XL probes?

No. This transmitter is specifically tuned for the electrical impedance of the 3300 XL 8mm probe. Using it with 5mm, 11mm, or non-XL probes will result in incorrect scale factors and potentially blind your protection system to actual vibration levels.

How do I confirm this is a brand new unit?

Every 990-05-50-03-05 we ship arrives in its original Bently Nevada factory packaging with the serial number and "Made in USA" labels intact. This guarantees the unit has never been installed or refurbished.