990-04-70-01-00 Vibration Transmitter

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	990-04-70-01-00
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 990-04-70-01-00 Vibration Transmitter is a precision two-wire, loop-powered device engineered for OEM applications in centrifugal air compressors, small pumps, motors, and fans. Designed to interface seamlessly with 3300 NSv Proximity Probes and extension cables (available in 5 m and 7 m options), the 990-04-70-01-00 converts raw proximity signals into a 4–20 mA proportional vibration output, providing reliable input to machinery control systems for monitoring, diagnostics, and alarm logic. Its linear range of 0.25 to 1.65 mm (10–65 mils) ensures accurate measurement of vibration amplitudes, while the integrated Proximitor Sensor eliminates the need for additional external units. Featuring non-interacting zero and span potentiometers, a test input pin for quick loop verification, and a Not OK/Signal Defeat circuit to prevent false alarms, the 990-04-70-01-00 is optimized for compact installations with limited space, such as compressor housings. Constructed with potted electronics for 100% condensing humidity tolerance and operating across -35°C to +85°C, the transmitter delivers stable performance in harsh industrial environments. Its BNC connector output supports both dynamic vibration and gap voltage signals for advanced diagnostics, making the 990-04-70-01-00 a versatile, industry-standard solution for precision vibration monitoring.

Applications

Rotating Machinery Vibration Monitoring
The 990-04-70-01-00 Vibration Transmitter captures vibration signals from bearings, turbines, pumps, and motors, using non-contact 3300 NSv Proximity Probes to provide real-time analog data for predictive maintenance and machinery diagnostics.

Prox Output Signal Analysis
Using its Prox Out BNC connector and 10 kΩ output impedance calibrated for a 10 MΩ load, the 990-04-70-01-00 Vibration Transmitter enables accurate velocity and displacement analysis for automated condition monitoring systems.

Industrial Process Control
The 990-04-70-01-00 Vibration Transmitter integrates into process control networks, transmitting vibration data to PLCs, DCS, or alarm systems for early detection of misalignment, imbalance, or mechanical faults.

Flexible Installation in Hazardous Zones
CSA Division 2 rated, the 990-04-70-01-00 Vibration Transmitter allows safe deployment in potentially explosive industrial areas, supporting long cable runs of up to 7.0 meters (23.0 feet) while maintaining signal integrity.

Specifications

Competitive Advantage

Wide Linear Range for Precision Monitoring
The 990-04-70-01-00 Vibration Transmitter provides a linear output from 0.25 to 1.65 mm (10–65 mils), ensuring accurate vibration measurements for both small and moderate shaft movements.

High-Temperature Operation
Rated for −35°C to +85°C, the 990-04-70-01-00 Vibration Transmitter withstands industrial temperature extremes without performance loss.

Optimized Electrical Integration
With 12–35 Vdc power input, 23 mA current limiting, and 1,000 Ω maximum loop resistance, the 990-04-70-01-00 Vibration Transmitter delivers reliable analog signals compatible with industrial monitoring systems.

Long Cable and System Compatibility
The 990-04-70-01-00 Vibration Transmitter supports 7.0-meter system lengths and maximum Proximitor sensor cable distances of 3 meters (10 feet), enabling flexible installation across industrial automation layouts.