Product Overview
The Bently Nevada 991 Thrust Transmitter (991-06-70-01-05) offers precise axial displacement monitoring for rotating machinery. It supports centrifugal compressors, pumps, motors, and fans. The transmitter delivers a 4–20 mA proportional output, enabling seamless integration with industry-standard control systems. Moreover, engineers can rely on its robust construction for continuous operation in harsh industrial environments.
Key Features
- Integrated Proximitor Sensor: The built-in proximitor eliminates the need for external units, reducing installation complexity.
- Dynamic Output Options: Engineers gain access to PROX OUT and COM terminals, as well as a coaxial connector for diagnostics.
- Adjustable Zero and Span: Non-interacting potentiometers allow accurate loop calibration under the label.
- Convenient Test Input Pin: A DC voltage source verifies loop functionality quickly during system checks.
- Startup Protection: The power-up inhibit circuit prevents incorrect signals during line voltage transients.
- Enhanced Reliability: A signal defeat function disables false alarms when probes or connections fail.
- Flexible Mounting: Users may select DIN-rail clips or bulkhead installation based on system design.
- Industrial Durability: Potted construction resists condensation, ensuring performance in humid environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes Company) |
| Model | 991-06-70-01-05 |
| Input Compatibility | 3300 NSv proximity probe |
| Output Signal | 4–20 mA proportional to axial displacement |
| Power Requirement | 2-wire, loop-powered |
| Mounting Options | 35 mm DIN-rail clips or bulkhead mounting |
| Approval Ratings | CSA Division 2, ATEX Zone 0/2, ABS maritime |
| Weight | 0.43 kg (0.9 lbm) |
Environmental Limits
- Operating Temperature: -35°C to +85°C (-31°F to +185°F)
- Storage Temperature: -51°C to +100°C (-60°F to +212°F)
Mechanical Specifications
- Transducer Tip Material: Polyphenylene sulfide (PPS)
- Transducer Case Material: Stainless steel (AISI 303/304)
Ordering Information Breakdown
- Model: 991-06-70-01-05
- A: Full-Scale Range: 0.6 mm (±0.3 mm)
- B: System Length: 7.0 meters (23.0 feet)
- C: Mounting Option: 35 mm DIN-rail clips
- D: Agency Approval: CSA Division 2, ATEX Zone 0/2, ABS maritime approval
Applications
The Bently Nevada 991-06-70-01-05 serves OEMs and plant operators who need accurate thrust measurement. It supports condition monitoring, machinery protection, and predictive maintenance in sectors such as power generation, oil and gas, and heavy industry. Furthermore, its rugged design ensures reliable performance under continuous stress.
Details
| Weight | 0.3 kg |
|---|
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