Axial range
The 06 field on Bently Nevada 991-06-70-03-05 selects the 0.6–0–0.6 mm thrust range.
Bently Nevada · Machinery Monitoring HardwareMoore Automation · Technical Record
Bently Nevada · 991 Thrust Transmitter
Bently Nevada 991-06-70-03-05
| 991 Thrust Transmitter
±0.6 MM THRUST RANGE · 7 M SYSTEM · DIN AND BULKHEAD MOUNT
Complete model · 991-06-70-03-05
01
Product Details
Bently Nevada 991-06-70-03-05 is a 991 two-wire thrust transmitter for a matched 3300 NSv proximity system. Its 06 range field represents the ±0.6 mm axial-displacement span, while 70 selects a 7.0 m system and 03 selects DIN clips with bulkhead screws.
The input path of Bently Nevada 991-06-70-03-05 starts at the 3300 NSv probe and matched extension cable. The integrated Proximitor Sensor conditions the axial signal and the transmitter drives a 4–20 mA process loop for the control system.
Bently Nevada 991-06-70-03-05 also provides a buffered BNC Prox Out, zero and span adjustments, power-up inhibit and Not OK/signal defeat. The final 05 approval field remains part of the exact transmitter record.
02
Specification Summary
- Brand
- Bently Nevada
- Complete model
- 991-06-70-03-05
- Product type
- 991 two-wire thrust transmitter
- Full-scale range
- 06 = 0.6–0–0.6 mm
- System length
- 70 = 7.0 m
- Mounting
- 03 = DIN clips and bulkhead screws
- Approval
- 05 = multiple approvals
- Input
- 3300 NSv proximity transducer
- Output
- 4–20 mA
- Supply
- +12 to +35 Vdc
- Accuracy
- ±1.5%
- Buffered output
- BNC Prox Out
- Prox output load
- 10 kΩ for 10 MΩ load
- Not OK current
- Below 3.6 mA
- Not OK response
- Within 100 µs
- Recovery time
- Within 0.1 s
- Humidity
- Up to 100%, condensing
- Adjustments
- Zero and span
- Construction
- Potted transmitter
- Protection
- Power-up inhibit
03
Performance Characteristics
Bently Nevada 991-06-70-03-05 uses a defined axial range and loop behavior to represent thrust position in the control system.
Loop accuracy
The 4–20 mA output of Bently Nevada 991-06-70-03-05 is specified to ±1.5% loop accuracy.
Fault response
A Not OK condition is represented below 3.6 mA, with the documented rapid response and recovery behavior.
04
Installation Highlights
The physical installation of Bently Nevada 991-06-70-03-05 combines the 35 mm DIN clips, bulkhead screws and the 7.0 m matched probe system.
Mounting hardware
The 03 field gives Bently Nevada 991-06-70-03-05 both DIN-rail clips and bulkhead screws, allowing the selected mounting boundary to be retained.
Matched length
The 70 field identifies the 7.0 m 3300 NSv probe and extension-cable system length used by Bently Nevada 991-06-70-03-05.
Loop wiring
The +12 to +35 Vdc supply and 4–20 mA loop must be wired with the correct polarity and the transmitter’s PROX OUT kept separate for diagnostics.
05
Frequently Asked Questions
Why can Bently Nevada 991-06-70-03-05 show thrust zero drift?
For Bently Nevada 991-06-70-03-05, check the probe gap, zero/span adjustment and the 7.0 m matched NSv system before changing the control-system zero. Mechanical movement and electrical-length mismatch affect the same displayed value.
What should be checked when Bently Nevada 991-06-70-03-05 reports low loop current?
A Bently Nevada 991-06-70-03-05 loop current below 3.6 mA indicates the Not OK region. Check the probe, extension, transmitter supply and terminal polarity before treating the low current as a negative thrust value.
How does the 03 option affect installation of Bently Nevada 991-06-70-03-05?
The 03 field on Bently Nevada 991-06-70-03-05 provides DIN clips and bulkhead screws. Choose the fixing method that matches the cabinet drawing, but keep the 4–20 mA loop and BNC Prox Out wiring separate.
Why is the BNC Prox Out useful on Bently Nevada 991-06-70-03-05?
The buffered BNC Prox Out on Bently Nevada 991-06-70-03-05 lets a technician observe the dynamic and gap signal while the 4–20 mA loop remains connected to the control input.
How quickly should a Not OK change be visible from Bently Nevada 991-06-70-03-05?
Bently Nevada 991-06-70-03-05 specifies the Not OK current behavior and response timing in the transmitter record. Compare the observed loop transition with the documented response before changing alarm delays in the control system.
Why must the 05 approval field remain with Bently Nevada 991-06-70-03-05?
The final 05 field is part of the complete Bently Nevada 991-06-70-03-05 approval record. Removing it can result in a transmitter with the wrong installation or certification configuration.
06
Thrust Range Record
Moore Automation
Moore Automation supports industrial automation, monitoring and instrumentation enquiries with complete model records and coordinated supply information.
The requested 991-06-70-03-05 record can stay linked to quantities, drawings and shipment details during the enquiry.
The complete 991-06-70-03-05 string stays visible in the enquiry.
Moore Automation handles automation, monitoring and instrumentation records.
Quantities, drawings and shipment details remain tied to the model record.
07
No related record found