990-04-50-02-00 Vibration Transmitter

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	990-04-50-02-00
Minimum Order Quantity:	1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 990-04-50-02-00 Vibration Transmitter is a high-precision, integrated solution within the Bently Nevada 990 series, specifically engineered to provide continuous machinery protection. This Vibration Transmitter is designed to interface directly with a proximity probe and extension cable, converting the complex eddy current signal into a standardized 4-20 mA output. The 990-04-50-02-00 model is defined by its 0-4 mils peak-to-peak (0-100 μm pp) full-scale range, making it an essential Vibration Transmitter for monitoring radial vibration in high-speed rotating assets. By utilizing this Vibration Transmitter, industrial operators can seamlessly integrate critical vibration data into Distributed Control Systems (DCS) or Programmable Logic Controllers (PLC) without the need for separate signal conditioners or rack-based monitoring systems.

As a loop-powered device, the 990-04-50-02-00 Vibration Transmitter simplifies wiring architecture by using a 2-wire configuration, which significantly reduces installation labor and material costs. This Vibration Transmitter is optimized for a 5.0-meter system length, ensuring calibrated accuracy when paired with matching 5.0m proximity probe systems. The mechanical design of the 990-04-50-02-00 features a rugged housing suitable for bulkhead mounting using screws, providing a stable and vibration-resistant installation directly on the machine frame or within a local junction box.

Applications

The 990-04-50-02-00 is primarily utilized for the radial vibration monitoring of fluid-film bearing machines. By providing a 0-4 mils peak-to-peak signal to a plant’s PLC or DCS, it allows for the real-time tracking of shaft dynamic motion. This application is vital for identifying early-stage mechanical faults such as rotor imbalance, misalignment, or shaft cracks in centrifugal pumps and small steam turbines, where exceeding vibration thresholds can lead to immediate equipment trips to prevent catastrophic damage.

In remote pumping stations and cooling tower fan assemblies, the 990-04-50-02-00 serves as a cost-effective alternative to complex rack-based monitoring systems. Its 2-wire loop-powered design allows it to be installed in localized bulkhead enclosures near the motor or gearbox. The 5.0-meter system length provides enough flexibility to mount the transmitter in a protected environment while the probe stays positioned on the machine, ensuring reliable data transmission over long distances back to the central control room without signal degradation.

The 990-04-50-02-00 is also ideal for general-purpose machinery protection in hazardous or harsh industrial zones. Given its robust construction and high immunity to electrical noise, it is frequently deployed in water treatment facilities, chemical processing plants, and HVAC systems. It provides a standardized 4-20 mA "overall vibration" level that is easily interpreted by non-specialized maintenance staff, facilitating a straightforward "green/yellow/red" status indicator for the health of essential auxiliary equipment.

Specifications

Competitive Advantage

1. Seamless Integration via 4-20 mA Loop-Powered Design

The 990-04-50-02-00 eliminates the complexity of traditional vibration monitoring by outputting a standard 4-20 mA signal. This allows the transmitter to be powered and transmit data over the same two wires, removing the need for dedicated local power supplies. This design significantly lowers the Total Cost of Ownership (TCO) by simplifying field wiring and enabling direct connection to existing industrial control hardware.

2. High Signal Stability and Precision Accuracy

With a supply sensitivity of less than 0.05% per Volt and a precisely calibrated 0-4 mils full-scale range, this transmitter delivers laboratory-grade accuracy in field conditions. The 990-04-50-02-00 is engineered to filter out industrial electrical noise and power fluctuations, ensuring that the vibration data received by the control system is a true representation of the machine's mechanical state, reducing false alarms and unnecessary downtime.

3. Ruggedized Bulkhead Mounting and ClickLoc Security

Unlike many competitive transmitters that rely solely on DIN rail clips, the 990-04-50-02-00 offers robust bulkhead screw mounting, ensuring the device remains securely attached even when subjected to the high-frequency vibrations of the machine frame itself. Additionally, the inclusion of the ClickLoc miniature coaxial connector provides a self-locking mechanism that prevents accidental cable disconnection, a critical feature for maintaining "always-on" machinery protection.