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Bently Nevada 990 Vibration Transmitter
The Bently Nevada 990 Vibration Transmitter is a 2-wire, loop-powered device that works with 3300 NSv proximity probes to convert vibration signals into a proportional 4 to 20 mA output. Designed for OEM compressors, pumps, motors, and fans, it enables simple and reliable integration with machinery control and protection systems.
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Categories: Vibration Monitor
Description
The Bently Nevada 990 Vibration Transmitter is designed for original equipment manufacturers of centrifugal air compressors, small pumps, motors, and fans that require a simple and reliable 4 to 20 mA vibration signal for machinery control systems. It provides accurate vibration monitoring and easily integrates into existing control and protection systems.
This 2-wire, loop-powered transmitter works with Bently Nevada 3300 NSv proximity probes and matching 5 m or 7 m extension cables. It conditions the input signal into peak-to-peak vibration amplitude values and delivers a proportional 4 to 20 mA industry-standard output, enabling effective machinery protection, alarm management, and control system integration.
QTech Safety is a leading supplier of Bently Nevada 990 Vibration Transmitter in Ireland, offering competitive prices and fast worldwide shipping across United Kingdom (UK), Germany, France, Italy, Spain, United States USA, Canada, Mexico, and Western Australia (Perth). Buy Bently Nevada Vibration Monitor from one of Ireland’s most trusted industrial safety equipment suppliers.
Features of Bently Nevada 990 Vibration Transmitter
Integrated Proximitor Sensor with no external unit required
PROX OUT and COM terminals with coaxial connector for vibration and gap voltage diagnostics
Non-interacting zero and span adjustments for easy loop calibration
Test Input pin for quick loop signal verification
Power-up Inhibit circuit prevents startup signal errors
Not OK/Signal Defeat circuit avoids false alarms from probe faults
DIN-rail or bulkhead mounting options for easy installation
Fully potted design for high humidity environments up to 100 percent condensing
Compatible with 3300 NSv proximity probes for tight installation spaces
Technical Specifications of Bently Nevada 990 Vibration Transmitter
Input: 1 × 3300 NSv proximity probe + extension cable
Output: 4–20 mA loop‑powered vibration signal
Power supply: +12 Vdc to +35 Vdc
Frequency response: 5 Hz–6 kHz
Probe gap range: 0.5–1.75 mm (20–55 mils)
Loop resistance: Max 1 000 Ω at 35 Vdc
Zero & span: External adjustments
NOT OK / fault output: <3.6 mA
Prox Out: Non‑isolated dynamic signal
Minimum target: ~9.5 mm diameter
Operating temp: –35 °C to +85 °C
Storage temp: –52 °C to +100 °C
Lead length: Max 3 m (10 ft)
Mounting: DIN‑rail or bulkhead
Construction: Potted, high humidity tolerant
Vibration Monitor Part Number & Configuration Guide
Standard (Example) Part Number
990-04-50-01-00
This is a reference configuration for the Bently Nevada 990 Vibration Transmitter. It represents one commonly supplied setup and helps customers understand how the part number is structured.
Configurable Part Number Format
990-XX-XX-XX-XX
Each X / XX in the part number indicates a selectable option that can be customized based on your application requirements such as Full-scale Option, System Length, Mounting & Approvals.
✅ Important: Final part number depends on the exact configuration needed for your machinery, environment, and monitoring system.
Applications
The Bently Nevada 990 Vibration Transmitter is commonly used in monitoring industrial rotating equipment, including:
Centrifugal air compressors
Small pumps, motors, and fans
OEM machinery control systems
Skid-mounted equipment packages
Applications requiring a simple 4 to 20 mA vibration signal output
Why Choose QTech Safety?
At QTech Safety, we’re more than just a safety supplier we’re your trusted partner in workplace protection and compliance.
Here’s why companies across UK and Ireland (EU) choose us for safety products and training:
- Comprehensive Range of Safety Equipment:
From gas detection and PPE to industrial safety tools, we offer one of the widest selections of trusted brands all at competitive Irish market prices. - Test & Measurement Instruments You Can Trust:
We supply a wide range of test and measurement instruments from the most leading and trusted brands, including industrial sensors, multimeters, oscilloscopes, accelerometers, proximity sensors, and other advanced measurement tools to support accurate diagnostics, condition monitoring, calibration, and maintenance applications. - Expert Health & Safety Training:
We provide professional health and safety training programmes designed to help your workforce stay compliant and confident on the job. - Fast, Reliable Delivery Worldwide:
Whether you’re in Texas United States or Perth Western Australia, our fast delivery service ensures you get your safety equipment quickly and efficiently. - Trusted by European Businesses:
We’re proud to support industries across Europe (UK) with certified safety solutions, expert advice, and responsive customer service.
We Ship Worldwide
At QTech Safety, we supply industrial sensors and instrumentation across Ireland, offering fast and reliable worldwide delivery. Through strong global logistics partnerships, we ensure efficient shipping and professional support for customers in Europe, North America, and Australia.
🡆 Europe (United Kingdom, Ireland, Germany, France, Italy, Spain, and the rest of European Union)
🡆 Australia (Western Australia WA, Queensland QLD, and New South Wales NSW)
🡆 North America (United States, Canada, Mexico)
