Bently Nevada 990-05-70-01-05 990 series single-channel shaft vibration transmitter

Product Description

Bently Nevada 990-05-70-01-05 is a single-channel shaft vibration transmitter of the 990 series (Bently Nevada, Baker Hughes). It is a 2-wire loop-powered eddy-current vibration transmitter compatible with 3300 NSv proximity probes and extension cables. It measures shaft radial relative vibration and converts peak-to-peak vibration value into standard 4-20mA analog signal for PLC/DCS systems. It has a BNC dynamic output port for waveform diagnosis. Built-in Not OK fault detection circuit for probe failure. Potted housing with high humidity resistance, DIN rail mounting. Widely used for vibration monitoring and protection of small & medium rotating machinery, it is a common spare part for TSI systems.

Specifications

• Model: 990-05-70-01-05
• Series: 990 Vibration Transmitter
• Measuring Range: 0~5 mil (peak to peak, 0~125μm pp)
• Sensitivity: 7.87 mV/μm
• Frequency Response: 5Hz ~ 6000Hz
• Power Supply: 2-wire loop powered
• Output: 4~20mA proportional to full-scale vibration; BNC dynamic Prox output for waveform capture
• Protection: Not OK circuit for probe fault detection (open/short circuit alarm)
• Mounting: DIN rail mounting
• Housing: Potted construction, withstand up to 100% condensing humidity
• Compatible Probes: 3300 NSv series eddy current proximity probes (330910 probe, 330930 extension cable)
• Operating Temperature: -40℃ ~ +85℃
• Certifications: CE, UL

Application

1. Radial shaft vibration monitoring for centrifugal air compressors and small compressors;
2. Shaft vibration protection for industrial pumps, fans, blowers and motors;
3. TSI vibration monitoring for generator sets and small steam turbines;
4. Vibration transmitter for OEM packaged rotating machinery;
5. Spare part replacement & system retrofit for legacy Bently 990 transmitters.

Same Series Models

990-04-50-01-00, 990-04-70-01-00, 990-05-50-01-00, 990-05-50-01-05, 990-05-70-01-00, 990-05-70-02-00, 991 (Thrust Transmitter series)