Excellent PLC
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Description
The Bently Nevada 990-04-50-01-00 Vibration Transmitter is a loop-powered, two-wire device designed to provide a 4–20 mA vibration signal. It is optimized for OEM applications such as centrifugal air compressors, motors, pumps, and fans where basic vibration monitoring is required. The unit integrates signal conditioning and supports the 3300 NSv proximity probe system, delivering peak-to-peak measurements for trending and basic protection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Input | 3300 NSv Proximity Probe |
| Output | 4–20 mA DC (loop-powered) |
| Accuracy | ±1.5% of full scale |
| Frequency Range | 5 Hz to 6,000 Hz |
| Probe Gap Range | 0.5 to 1.75 mm |
| Temperature Range (Transmitter) | -35°C to +85°C |
| Temperature Range (Probe) | -52°C to +177°C |
| Humidity | 100% condensing |
| Mounting | DIN rail or bulkhead |
| Power Supply Range | 12 to 35 VDC |
| Loop Resistance (Max) | 1,000 Ω @ 35 VDC |
| Signal Defeat/NOT OK Logic | Output < 3.6 mA within 100 µs |
| Dimensions | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
Applications
-
Centrifugal air compressors
-
Small industrial pumps
-
Electric motors
-
HVAC fans
-
OEM machinery with limited diagnostic needs
-
General-purpose vibration level trending
Advantages
-
Simple 4–20 mA signal integration
-
Internal Proximitor sensor eliminates external conditioning
-
Test pin for signal loop verification
-
Rugged, potted design for harsh environments
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Supports diagnostics via dynamic output (non-isolated)
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Easy installation with DIN rail or bulkhead options
FAQs
Q1: What type of probe is compatible with the 990 Transmitter?
A1: It is compatible with the 3300 NSv Proximity Probe system.
Q2: Can I use the transmitter for critical machinery diagnostics?
A2: No, it is meant for general vibration trending and does not capture dynamic signals for full diagnostics.
Q3: What is the power supply requirement?
A3: It requires a 12 to 35 VDC power supply.
Q4: How is the output delivered?
A4: The unit outputs a 4–20 mA signal proportional to the vibration level.
Q5: Is the dynamic output isolated?
A5: No, the dynamic “PROX OUT” signal is non-isolated. Use the 122115-01 Test Adapter for isolation.
Q6: What happens in case of a sensor fault?
A6: The output drops below 3.6 mA to indicate a “NOT OK” condition.
Q7: Can it be installed in hazardous areas?
A7: Yes, it supports Zone 2/Div 2 hazardous location approvals.
Q8: Is the device field adjustable?
A8: Yes, it has zero and span adjustment potentiometers under the label.
Q9: What kind of mounting is supported?
A9: DIN rail and bulkhead mounting are both supported.
Q10: What is the main limitation compared to continuous monitoring systems?
A10: It cannot support diagnostics such as phase, gap, or alarm bypass functions and doesn’t integrate with diagnostic platforms like System 1.
Related or Similar Models
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 990-05-70-02-05 | Vibration Transmitter, 7m system, bulkhead | 100.1 x 73.9 x 53.3 | 0.43 |
| 990-08-50-01-05 | Vibration Transmitter, 8 mils full scale | 100.1 x 73.9 x 53.3 | 0.43 |
| 990-10-50-03-05 | Vibration Transmitter, 10 mils, DIN+bulk | 100.1 x 73.9 x 53.3 | 0.43 |
| 990-04-70-01-01 | Vibration Transmitter, 4 mils, 7m DIN rail | 100.1 x 73.9 x 53.3 | 0.43 |
| 990-05-50-02-00 | Basic model, 5 mils, 5m bulkhead mount | 100.1 x 73.9 x 53.3 | 0.43 |
| 990-04-70-02-05 | ATEX approved, 7m cable, bulkhead mount | 100.1 x 73.9 x 53.3 | 0.43 |
Popular Models from Bently Nevada
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/42M | Proximitor Seismic Monitor | 241.3 x 24.9 x 99.1 | 0.46 |
| 3500/22M | Transient Data Interface Module | 241.3 x 24.9 x 99.1 | 0.45 |
| 3500/15 | Power Supply Module | 241.3 x 24.9 x 99.1 | 0.50 |
| 3500/20 | Rack Interface Module | 241.3 x 24.9 x 99.1 | 0.47 |
| 3500/25 | Keyphasor Module | 241.3 x 24.9 x 99.1 | 0.49 |
| 330180-91-CN | 3300 XL Proximitor Sensor (China version) | 98.3 x 30.5 x 30.5 | 0.41 |
