Bently Nevada 990-04-70-02-00 Vibration Transmitter

990-04-70-02-00 Bently Nevada 7m System Vibration Monitor

990-04-70-02-00 Bently Nevada 7m System Vibration Monitor

Availability: 10 left in stock

Product Overview The Bently Nevada 990-04-70-02-00 functions as a self-contained, 2-wire vibration transmitter that bridges the gap between proximity probes...

SKU: 990-04-70-02-00

Manufacturer: Bently Nevada
Product No.: 990-04-70-02-00
Product Type: Bently Nevada 990 Series
Product Origin: USA
Payment:T/T, Western Union
Weight: 800g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Bently Nevada 990-04-70-02-00 functions as a self-contained, 2-wire vibration transmitter that bridges the gap between proximity probes and plant control systems. This device converts the complex dynamic signal from a 3300 NSv proximity probe into a standardized 4–20 mA analog output. By providing a signal linearly proportional to peak-to-peak vibration displacement, it enables direct interfacing with PLCs, DCS, or SCADA platforms without the need for a dedicated 3500 rack. This module specifically serves critical rotating machinery where a simplified architecture and a 0–4 mil measurement range are required for API 670 compliant protection.

Part Number Breakdown

990: 990 Series Vibration Transmitter.
04 (Full-Scale Range): 0–4 mils pp (0–100 µm pp).
70 (System Length): 7.0 Meters (23.0 Feet).
02 (Mounting Option): Panel Mount (Standard screws).
00 (Agency Approval): No specific hazardous area approvals.

Technical Specifications

Parameter	Professional Specification
Output Signal	4–20 mA DC (Loop-powered)
Full-Scale Range	0–4 mils pp (0–100 µm pp)
Input Compatibility	3300 NSv Proximity Probe + Extension Cable
System Calibration	7.0 Meters (Total Electrical Length)
Frequency Response	10 Hz to 1,000 Hz (600 to 60,000 cpm)
Power Requirement	+18 to +30 VDC
Enclosure Rating	IP66 / NEMA 4X
Operating Temp	–35 °C to +85 °C (–31 °F to +185 °F)
Mounting	Panel Mount (4-bolt pattern)

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Engineering Advantages

The 990-04-70-02-00 solves integration challenges in modern industrial automation:

Direct PLC/DCS Integration: This transmitter eliminates the cost and space requirements of a centralized monitoring rack. It outputs a standard 4-20mA loop signal, allowing existing control system I/O cards to handle vibration data as a standard process variable.
Optimized for 3300 NSv Systems: The 990 series specifically supports the 3300 NSv probe line, which features a smaller tip diameter and tighter side-clearance requirements. This makes the 990-04-70-02-00 ideal for small-bore piping, fluid-film bearing motors, and centrifugal compressors with limited probe mounting space.
Ruggedized NEMA 4X Protection: The IP66-rated enclosure allows for mounting directly at the machine base or in local junction boxes. The circuit design withstands extreme temperature fluctuations and high-moisture environments typical of power generation and petrochemical facilities.
Enhanced Loop Diagnostics: The transmitter maintains a specific "Not OK" current level (typically <3.6 mA) if it detects a transducer failure or cable disconnect. This hardware-level diagnostic ensures that the control system can distinguish between zero vibration and a sensor fault, preventing "blind" operation.

FAQs

Is the Bently Nevada 990-04-70-02-00 unit brand new?Yes. We supply the 990-04-70-02-00 in 100% Brand New and Original condition. Each unit arrives in its original factory packaging, ensuring the internal calibration and loop-power circuitry meet all OEM performance benchmarks.
What probe and cable length must I use with this transmitter?This specific unit (70 option) requires a 7.0-meter total system length. You must use a 3300 NSv probe and extension cable that combined equal exactly 7.0 meters. Using a 5.0m or 9.0m system will result in significant calibration errors and inaccurate 4-20mA readings.
Can I mount this transmitter on a DIN rail?The 02 mounting option designates a Panel Mount configuration. While it lacks the pre-installed DIN rail clips found on the 01 variant, you can mount it directly to a backplate using the provided bolt holes. If your cabinet requires DIN mounting, ensure you have the appropriate adapter or specify the 01 model.
Does this transmitter require an external power supply?The 990-04-70-02-00 is a loop-powered device. It requires an external +18 to +30 VDC power source, typically provided by the analog input card of your PLC or DCS. It regulates the current on the loop to represent the measured vibration level.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.