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Bently Nevada 990-05-70-02-05 Vibration Transmitter
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Warranty：1 year
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Detail
- Product NameBently Nevada 990-05-70-02-05 Vibration Transmitter
- Item NO.990-05-70-02-05
- Weight0.4400 kg = 0.9700 lb = 15.5205 oz
- CategoryOTHER
- BrandBently Nevada
- Creation Time2026-10-28
- Bently Nevada 990-05-70-02-05: A loop-powered vibration transmitter for proportional machinery vibration trending.
990-05-70-02-05
A loop-powered vibration transmitter for proportional machinery vibration trending.
Contact info
Specifications
| Full-scale vibration range | 0 to 5 mils peak-to-peak (0 to 125 µm peak-to-peak) |
| Output current | 4 to 20 mADC |
| Supply voltage at transmitter | +12 to +35 VDC |
| Loop output accuracy | ±1.5% of full scale, additional to Prox Out scale-factor error |
| Maximum loop resistance | 1000 Ω including cable at 35 VDC |
| Typical current limit | 23 mA |
| Not-OK output current | Less than 3.6 mA |
| Not-OK detection delay | Within 100 µs |
| Signal restoration delay | 2 to 3 seconds after fault removal |
| Power-up inhibit time | 2 to 3 seconds |
| Prox Out impedance | 10 kΩ |
| Prox Out calibration load | 10 MΩ |
| Prox Out linear range | 1.4 mm (55 mils) |
| Linear-range starting gap | Approximately 0.25 mm (10 mils) |
| Prox Out scale factor | 7.87 mV/µm (200 mV/mil) |
| Typical scale-factor error | ±6.5%, including interchangeability errors |
| Worst-case scale-factor error | ±10% |
| Typical Prox Out noise | 50 mV peak-to-peak |
| Scale-factor temperature stability | Within ±10% of 7.87 mV/µm over 0 to +70 °C |
| Frequency response | 5 to 6000 Hz, +0/-3 dB |
| Minimum target diameter | 9.5 mm |
| Prox Out lead length limit | 3 m (10 ft) |
| Transmitter operating temperature | -35 to +85 °C |
| Transmitter storage temperature | -52 to +100 °C |
| Relative humidity | 100% condensing, non-submerged; coaxial connectors protected |
| Reference test temperature | +22 °C |
| Reference target material | AISI 4140 steel |
| Loop wiring | 2-wire, loop-powered |
| Zero and span adjustment | External, non-interacting potentiometers |
| Dynamic diagnostic signal | Non-isolated Prox Out |
| Grounded AC test-equipment interface | 122115-01 test adapter for signal isolation |
| System length | 7 m |
| Transducer configuration | 3300 NSv proximity probe and matching extension cable |
| Mounting configuration | Bulkhead screws |
The current-loop output supports overall trending, not phase analysis. Grounded AC diagnostic equipment requires the recommended isolation interface.
Description
Bently Nevada 990-05-70-02-05 is a machinery vibration transmitter with a proportional current-loop output. This configuration uses the 7 m transducer system specified for its order. Dynamic Prox Out provides a separate diagnostic signal. External adjustments support loop calibration without interacting zero and span settings. The transmitter suits overall vibration trending on suitable rotating machinery. Probe matching and diagnostic isolation must be checked during system integration.
Vibration Signal & Diagnostics
Condition vibration amplitude into a proportional current-loop signal.
Use Prox Out with suitable isolated test equipment to inspect the dynamic transducer signal.
Rotating Machinery Monitoring
Supply a proportional vibration signal to the machinery control system for suitable centrifugal compressors.
Monitor overall vibration on suitable pumps, motors or fans using a correctly matched probe system.
Why Choose Us
Transaction Cases
A Germany customer urgently needed a replacement for a discontinued automation component. After reviewing the product label, technical parameters, and application details, our engineers recommended a compatible alternative and provided photos and test videos before shipment. The alternative performed well, enhancing the customer's confidence in our technical capabilities and leading to multiple repeat orders.
An Indian customer still had doubts after initial online communication with us, so they visited our company in person for a face-to-face meeting and product inspection. This visit increased the customer's trust and led to the successful placement of their first order. Over the next few years, we completed multiple orders and established a stable, long-term partnership.
A Malaysia customer needed a specific automation component and compared products and services from several suppliers online. After nearly three weeks of careful consideration, our sincere communication, professional service, and reliable product quality won the customer's trust. After receiving the product and using it for several weeks without any problems, the customer gave us positive feedback and subsequently placed multiple orders.
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