990-04-50-01-01 Vibration Transmitter

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	990-04-50-01-01
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 990-04-50-01-01 Vibration Transmitter is a precision two-wire, loop-powered transmitter designed for non-contacting vibration monitoring in automated industrial machinery. Specifically engineered for original equipment manufacturers (OEMs) of centrifugal air compressors, small pumps, motors, and fans, the 990-04-50-01-01 converts input from a single 3300 NSv proximity probe and its extension cable into a proportional 4 to 20 mA vibration signal for machinery control systems. The transmitter provides real-time peak-to-peak vibration amplitude in engineering units, enabling integration with machine protection, diagnostic systems, and control logic.

The 990-04-50-01-01 Vibration Transmitter supports linear ranges from 0.25 to 1.65 mm (10 to 65 mils) for Prox Out, accommodates maximum loop resistance of 1,000 Ω at 35 Vdc, and operates reliably across temperatures from -35°C to +85°C (-31°F to +185°F) while storing safely between -52°C and +100°C (-62°F to +212°F). The unit’s DIN-rail or bulkhead mounting options, compact design, and potted construction ensure durability in high-humidity environments up to 100% condensing. The integrated Proximitor Sensor eliminates the need for an external unit, while non-isolated PROX OUT and COM terminals with coaxial connectors provide high-fidelity dynamic vibration and gap voltage signals for advanced diagnostics.

The 990-04-50-01-01 Vibration Transmitter features non-interacting zero and span potentiometers for loop adjustment, a Test Input pin for rapid signal verification, and a Not OK/Signal Defeat circuit to prevent false alarms due to a faulty proximity probe or loose connection. Compatibility with 3300 NSv proximity probes makes the 990-04-50-01-01 ideal for installations with minimal clearance, such as centrifugal air compressors and other compact machinery.

Applications

OEM Machinery Vibration Monitoring
The 990-04-50-01-01 Vibration Transmitter provides a reliable 4 to 20 mA output for centrifugal air compressors, small motors, and fans. By measuring vibration amplitudes from 0.25 to 1.65 mm, it enables predictive maintenance programs that reduce machinery downtime by up to 15%.

Integration with Control Systems
Using a 3300 NSv Proximity Probe as input, the 990-04-50-01-01 Vibration Transmitter converts raw displacement signals into proportional electrical outputs compatible with standard PLCs and industrial control systems. The 10 kΩ calibrated output supports precise loop diagnostics up to 3 meters (10 feet) via BNC connector.

Compact Machinery Applications
The 990-04-50-01-01 fits in tight spaces with minimal clearance requirements, typical of OEM centrifugal compressors. Its integrated Proximitor Sensor allows accurate vibration monitoring without additional external components, optimizing space and installation simplicity.

High-Humidity and Harsh Environment Operation
Potted construction enables the 990-04-50-01-01 Vibration Transmitter to operate reliably in environments with up to 100% condensing humidity, making it suitable for refrigeration compressors or process gas machinery exposed to moisture.

Specifications

Competitive Advantage

Integrated Proximitor Sensor
The 990-04-50-01-01 Vibration Transmitter eliminates the need for external sensors, reducing system complexity and installation time while maintaining precise measurement of peak-to-peak vibration amplitude.

High-Fidelity Signal Output
With 50 Ω output resistance, linear ranges from 0.25 to 1.65 mm, and a 10 kΩ calibrated Prox Out, the 990-04-50-01-01 Vibration Transmitter ensures accurate signal transmission for machinery diagnostics and automated control systems.

Reliable in Extreme Environments
Operating from -35°C to +85°C (-31°F to +185°F) and potted for humidity resistance, the 990-04-50-01-01 Vibration Transmitter provides long-term performance in high-condensation and harsh industrial environments.

Ease of Installation
The 990-04-50-01-01 Vibration Transmitter supports DIN-rail clips or bulkhead mounting, enabling flexible placement in compact OEM machinery setups.

Advanced Diagnostic Features
Non-interacting zero and span potentiometers, Test Input pin, and Not OK/Signal Defeat circuits prevent false alarms, ensuring reliable and safe operation in automated monitoring systems.

Compact OEM Compatibility
Designed to work with a single 3300 NSv Proximity Probe and extension cable, the 990-04-50-01-01 Vibration Transmitter delivers precise vibration monitoring in small compressors, pumps, and fans, maximizing protection in tight-space industrial environments.