Excellent PLC
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Bently Nevada 991-06-50-01-01 Thrust Transmitter
- Product Details
- FAQs
- Related
- Contact Us
- Packing & Delivery
- Product Ratings
Product Overview
The Bently Nevada 991 Thrust Transmitter is a 2-wire, loop-powered device designed for OEMs using centrifugal air compressors, pumps, motors, or fans. It converts shaft axial displacement from a 3300 NSv proximity probe into a 4–20 mA current signal, enabling easy integration into control systems for machinery protection and diagnostics.
Key Features
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Direct integration with 3300 NSv Proximity Probes
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Delivers 4–20 mA signal proportional to shaft thrust
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PROX OUT and COM terminals for vibration/gap diagnostics
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Built-in zero/span adjustments
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Signal defeat and power-up inhibit functions
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Potted design suitable for 100% condensing humidity
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DIN rail or bulkhead mounting options
Applications
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Centrifugal air compressors
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Small industrial pumps
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Electric motors and cooling fans
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Machinery requiring axial position monitoring
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OEM skid packages
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Areas with limited clearance or harsh environments
Advantages
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Compact and rugged for tight installations
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Accurate axial position monitoring with fast signal recovery
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Supports portable diagnostics with dynamic output
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Enhanced signal integrity with recommended test adapter
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Complies with global certifications (CSA, ATEX, IECEx)
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Maintains loop protection from faulty probe or wiring issues
Technical Specifications
| Parameter | Value |
|---|---|
| Input | 3300 NSv Proximity Probe (1 probe + extension cable) |
| Power Supply | +12 to +35 VDC |
| Output Signal | 4–20 mA |
| Loop Accuracy | ±1.5% full scale |
| Max Loop Resistance | 1000 Ω @ 35 VDC |
| Current Limiting | 23 mA typical |
| Zero/Span Adjustments | External potentiometers |
| Linear Range (Prox Out) | 0.25 to 1.65 mm (10 to 65 mils) |
| Temperature Stability | ±10% (0°C to +70°C) |
| Operating Temp (Transmitter) | -35°C to +85°C |
| Operating Temp (Probe) | -52°C to +177°C |
| Relative Humidity | 100% condensing, non-submerged |
| Case Material | AISI 303/304 Stainless Steel |
| Dimensions | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
FAQ
Q1: What is the main function of the 991 Thrust Transmitter?
A1: It converts axial shaft displacement into a 4–20 mA signal for machinery monitoring.
Q2: What sensor is compatible with this transmitter?
A2: It works with the Bently Nevada 3300 NSv proximity probe and matching extension cables.
Q3: Can I use this in hazardous areas?
A3: Yes, it has approvals for CSA Division 2, ATEX Zone 0/2, and IECEx.
Q4: Is the PROX OUT signal isolated?
A4: No, use the 122115-01 Test Adapter for safe connection to AC-powered test equipment.
Q5: What mounting options are available?
A5: It supports DIN-rail clips and bulkhead screws as standard.
Q6: What happens if the probe becomes disconnected?
A6: The output drops below 3.6 mA within 100 µs to avoid false alarms.
Q7: What is the linear output range?
A7: 0.25 to 1.65 mm (10 to 65 mils) for the Prox Out dynamic signal.
Q8: Can it be used for plant-wide diagnostics?
A8: No, it’s not suitable for systems like System 1. It’s intended for simpler monitoring setups.
Q9: What’s the typical leadwire distance for the Proximitor output?
A9: Up to 3 meters (10 feet) from the transmitter to the BNC diagnostic output.
Q10: What tools are recommended for testing?
A10: Use the 122115-01 Test Adapter for signal isolation and analysis with oscilloscopes.
Related Models (Same Series or Compatible)
| Model | Description | Output Signal | Mounting Type | Cable Length |
|---|---|---|---|---|
| 991-06-70-01-01 | 991, 0.6 mm range, 7 m cable, DIN mount | 4–20 mA | DIN rail | 7 m |
| 991-25-50-02-05 | 991, 25 mil range, 5 m cable, bulkhead mount | 4–20 mA | Bulkhead | 5 m |
| 991-06-50-03-01 | 991, 0.6 mm range, 5 m cable, DIN + screw mount | 4–20 mA | DIN/screws | 5 m |
| 330901-00-50-01-00 | NSv Probe, 1/4-28 thread, 5 m, no armor | Voltage | Thread mount | 5 m |
| 330902-00-70-01-00 | NSv Probe, 1/4-28 thread, 7 m, with armor | Voltage | Thread mount | 7 m |
| 122115-01 | Test Adapter for PROX OUT signal isolation | — | Portable | — |
Popular Bently Nevada Models
| Model | Description | Function | Signal Type | Dimensions (mm) | Weight |
|---|---|---|---|---|---|
| 3500/42M | Proximitor Seismic Monitor | Vibration Monitoring | Dynamic | 241 x 24 x 99 | 0.5 kg |
| 3500/22M | Transient Data Interface Module | Data Interface | Digital | 241 x 24 x 99 | 0.4 kg |
| 3500/25 | Keyphasor Module | Speed and Phase Monitoring | Digital | 241 x 24 x 99 | 0.45 kg |
| 3500/15 | Power Supply Module | Power Conversion | — | 241 x 24 x 99 | 0.6 kg |
| 3500/32M | 4-Channel Relay Module | Relay Control | Relay | 241 x 24 x 99 | 0.45 kg |
| 330104-00-10-10-02 | 3300 XL 8mm Proximity Probe | Shaft Vibration Measurement | Voltage | 90.4 x 8 x 8 (tip) | 0.3 kg |
FAQ
Q1: What is the main function of the 991 Thrust Transmitter?
A1: It converts axial shaft displacement into a 4–20 mA signal for machinery monitoring.
Q2: What sensor is compatible with this transmitter?
A2: It works with the Bently Nevada 3300 NSv proximity probe and matching extension cables.
Q3: Can I use this in hazardous areas?
A3: Yes, it has approvals for CSA Division 2, ATEX Zone 0/2, and IECEx.
Q4: Is the PROX OUT signal isolated?
A4: No, use the 122115-01 Test Adapter for safe connection to AC-powered test equipment.
Q5: What mounting options are available?
A5: It supports DIN-rail clips and bulkhead screws as standard.
Q6: What happens if the probe becomes disconnected?
A6: The output drops below 3.6 mA within 100 µs to avoid false alarms.
Q7: What is the linear output range?
A7: 0.25 to 1.65 mm (10 to 65 mils) for the Prox Out dynamic signal.
Q8: Can it be used for plant-wide diagnostics?
A8: No, it’s not suitable for systems like System 1. It’s intended for simpler monitoring setups.
Q9: What’s the typical leadwire distance for the Proximitor output?
A9: Up to 3 meters (10 feet) from the transmitter to the BNC diagnostic output.
Q10: What tools are recommended for testing?
A10: Use the 122115-01 Test Adapter for signal isolation and analysis with oscilloscopes.
Related Models (Same Series or Compatible)
| Model | Description | Output Signal | Mounting Type | Cable Length |
|---|---|---|---|---|
| 991-06-70-01-01 | 991, 0.6 mm range, 7 m cable, DIN mount | 4–20 mA | DIN rail | 7 m |
| 991-25-50-02-05 | 991, 25 mil range, 5 m cable, bulkhead mount | 4–20 mA | Bulkhead | 5 m |
| 991-06-50-03-01 | 991, 0.6 mm range, 5 m cable, DIN + screw mount | 4–20 mA | DIN/screws | 5 m |
| 330901-00-50-01-00 | NSv Probe, 1/4-28 thread, 5 m, no armor | Voltage | Thread mount | 5 m |
| 330902-00-70-01-00 | NSv Probe, 1/4-28 thread, 7 m, with armor | Voltage | Thread mount | 7 m |
| 122115-01 | Test Adapter for PROX OUT signal isolation | — | Portable | — |
Popular Bently Nevada Models
| Model | Description | Function | Signal Type | Dimensions (mm) | Weight |
|---|---|---|---|---|---|
| 3500/42M | Proximitor Seismic Monitor | Vibration Monitoring | Dynamic | 241 x 24 x 99 | 0.5 kg |
| 3500/22M | Transient Data Interface Module | Data Interface | Digital | 241 x 24 x 99 | 0.4 kg |
| 3500/25 | Keyphasor Module | Speed and Phase Monitoring | Digital | 241 x 24 x 99 | 0.45 kg |
| 3500/15 | Power Supply Module | Power Conversion | — | 241 x 24 x 99 | 0.6 kg |
| 3500/32M | 4-Channel Relay Module | Relay Control | Relay | 241 x 24 x 99 | 0.45 kg |
| 330104-00-10-10-02 | 3300 XL 8mm Proximity Probe | Shaft Vibration Measurement | Voltage | 90.4 x 8 x 8 (tip) | 0.3 kg |
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Excellent PLC Co., Ltd. has a large number of brand new and original PLC and DCS spare parts, with more than 60 cooperative countries. All products are guaranteed for 1 year and delivered to you by high-quality express. We are committed to using the best products and the most favorable prices to meet the needs and friendship of our customers. We have won the trust of thousands of customers, including these excellent customers.
As for the delivery time, when we receive your order requirements, we will arrange for warehouse personnel to test and verify the products. After you place the order, we will send it to you within 24 hours.
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