Bently Nevada 990-05-70-03-05 Vibration Transmitter
A broadly approved 3300 NSv transmitter supplied with both DIN clips and bulkhead mounting hardware.
Product Overview
990-05-70-03-05 is the most comprehensively configured 990 transmitter in this batch. It retains the standard proximity-to-current conversion while adding both mounting methods and multiple hazardous-area and maritime approvals.
Approval of the product does not replace installation engineering. Associated apparatus, wiring, enclosure, grounding and the applicable control drawing must all support the selected protection method.
Performance
- Combines proportional vibration measurement with rapid reporting of a failed or invalid proximity chain.
- Supports cabinet-standardization projects where either rail or bulkhead mounting may be required.
- Offers a documented basis for approved installations when every associated condition is followed.
Technical Details
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Complete Model | 990-05-70-03-05 |
| Full-Scale Range | 0 to 5 mil peak-to-peak (0 to 125 µm peak-to-peak) |
| System Length | 7.0 m (23.0 ft) |
| Mounting Hardware | DIN-rail clips and bulkhead screws |
| Approval Package | CSA Division 2, ATEX Zone 0, ATEX Zone 2 and ABS maritime |
| Compatible Sensor Chain | 3300 NSv probe and extension cable |
| Input Supply | +12 to +35 VDC |
| Normal Output | 4 to 20 mA DC |
| Loop Accuracy | ±1.5% of full scale, excluding sensor error |
| Maximum Current | 23 mA typical |
| Output Update to Not-OK | Within 100 µs |
System Integration
- Coordinate the transmitter approval with every associated device in the measurement loop.
- Maintain segregation, grounding and shield termination required by the installation drawing.
- Confirm that marine or hazardous-area documentation matches the final equipment location.
Applications
- Classified-area auxiliary machinery
- Marine rotating equipment
- Standardized DIN or bulkhead cabinets
FAQ
Does 990-05-70-03-05 approval make every installation intrinsically safe?
No. The complete protection method, associated apparatus, entity parameters, wiring and control drawing determine compliance.
Can 990-05-70-03-05 be mounted on DIN rail or a panel?
The order code provides clips and screws, but the chosen method must follow spacing, grounding and environmental requirements.
What must match when replacing 990-05-70-03-05?
Match full-scale range, sensor-system length, mounting package, approvals and the complete 3300 NSv probe chain.
Is the ABS marking on 990-05-70-03-05 enough for a marine project?
Project and vessel requirements still need review, including enclosure, cabling, documentation and classification-society acceptance.
What commissioning evidence is important for 990-05-70-03-05?
Retain loop tests, sensor gap, scaling, fault response, barrier details and final alarm or trip verification.
What should be sent for a 990-05-70-03-05 enquiry?
Provide the area classification, required approval path, mounting preference, probe and cable labels, machine details and receiving-channel data.
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