Deskripsi
Overview
The Bently Nevada 990-04-70-02-00 is a high-precision 2-wire vibration transmitter designed for continuous machinery vibration monitoring. It converts signals from a 3300 NSv non-contact proximity probe into a 4–20 mA engineering unit output, enabling real-time protection and control integration for compressors, pumps, motors, and fans. Its compact, lightweight design and simplified integration make it ideal for OEMs and end-users seeking a reliable basic vibration monitoring solution.
Technical Specifications
| Specification | Details |
|---|---|
| Model | 990-04-70-02-00 |
| Type | 2-Wire Vibration Transmitter |
| Input | Single 3300 NSv non-contacting proximity probe with extension cable |
| Output | 4–20 mA proportional vibration signal |
| Full-Scale Option (-04) | 0–4 mils peak-to-peak (0–100 µm p-p) |
| System Length (-70) | 7.0 m (23 ft) probe + extension cable |
| Mounting Option (-02) | Bulkhead screw mounting |
| Power Supply | Loop-powered, 2-wire configuration |
| Weight | 0.82 kg |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 303 or 304 stainless steel |
| Probe Cable | 75 Ω coaxial, FEP insulated |
| Optional Cable Armor | Flexible AISI 302 stainless steel, optional FEP outer jacket |
| Tensile Strength | 222 N (50 lbf) maximum between probe case and lead |
Key Features
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Simple Integration: Direct 4–20 mA output for fast connection to control systems.
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Compact & Reliable: Lightweight design suitable for OEM or industrial installations.
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Flexible Configuration: Options for full-scale range, cable length, and mounting type.
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Continuous Monitoring: Real-time vibration measurement for machinery protection.
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OEM-Friendly: Ideal for compressors, pumps, motors, and fans requiring basic vibration monitoring.
Typical Applications
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Centrifugal Compressors: Detect imbalance or misalignment
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Pumps & Motors: Prevent bearing or shaft failures
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Fans & Blowers: Ensure smooth operation and early fault detection
FAQ
Q: Which probes are compatible with the 990-04-70-02-00?
A: Compatible with Bently Nevada 3300 NSv non-contacting proximity probes and their corresponding extension cables.
Q: What type of output signal does it provide?
A: 4–20 mA proportional vibration signal suitable for direct connection to DCS or PLC systems.
Q: Can it be used in high-temperature or corrosive environments?
A: The probe case is made of 303/304 stainless steel, and the cable can be equipped with FEP insulation and optional stainless steel armor, suitable for most industrial conditions.
Fitur
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