Excellent PLC
Bently Nevada 990-04-50-01-01 Vibration Transmitter
Product Overview
The Bently Nevada 990-04-50-01-01 Vibration Transmitter is a loop-powered, two-wire device designed for OEMs using small compressors, pumps, fans, or motors. It provides a 4–20 mA output signal proportional to vibration amplitude using a 3300 NSv proximity probe, supporting simplified machine protection integration.
Technical Specifications
| Parameter | Description |
|---|---|
| Input | 3300 NSv proximity probe and extension cable |
| Output Signal | 4 to 20 mA DC, proportional to vibration |
| Power Supply | 12 to 35 VDC |
| Frequency Response | 5 Hz to 6,000 Hz (+0, –3 dB) |
| Accuracy | ±1.5% full-scale |
| Operating Temperature | -35°C to +85°C |
| Storage Temperature | -52°C to +100°C |
| Humidity | 100% condensing (non-submerged) |
| Mounting Options | DIN rail or bulkhead |
| Compatibility | 3300 NSv probes (5m or 7m system length) |
| Dimensions (L x W x H) | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
Applications
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Centrifugal air compressors
-
Small industrial pumps
-
Fans and motors in OEM systems
-
Machinery where compact vibration monitoring is needed
Key Advantages
-
Integrated Proximitor sensor, no external device required
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Loop-powered 4–20 mA signal, easy to connect with control systems
-
Compact and rugged design for harsh environments
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Dynamic signal output via coaxial connector for diagnostics
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Adjustable zero and span, with Not OK signal logic built-in
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DIN rail or bulkhead mounting for flexibility
FAQs
Q1: What is the primary use of the 990 transmitter?
A1: It’s used for monitoring vibration in small machinery, transmitting a 4–20 mA signal to control systems.
Q2: Which probe is compatible with this transmitter?
A2: The 3300 NSv proximity probe and matching extension cable.
Q3: Can the transmitter be used in hazardous areas?
A3: Yes, it has CSA Division 2, ATEX Zone 0/2, and IECEx approvals.
Q4: What is the recommended power supply voltage?
A4: Between 12 and 35 VDC.
Q5: Does it support diagnostics?
A5: Yes, a dynamic “Prox Out” signal is available for diagnostic tools.
Q6: Is the output signal isolated?
A6: No, but the 122115-01 Test Adapter can provide signal isolation.
Q7: How is the probe gap set?
A7: Between 0.5 mm and 1.75 mm (20–55 mils) from the target.
Q8: What mounting options are available?
A8: DIN rail and bulkhead mounting clips are standard options.
Q9: Can this transmitter trend dynamic vibration?
A9: No, it only outputs peak-to-peak vibration via 4–20 mA signal.
Q10: Is this suitable for System 1 diagnostic integration?
A10: No, it is not designed for System 1 or other advanced diagnostics platforms.
Related Models (Same Series)
| Model Number | Output Range | Cable Length | Mounting Type | Weight |
|---|---|---|---|---|
| 990-05-50-01-01 | 0–5 mils | 5 m | DIN Rail | 0.43 kg |
| 990-08-50-02-01 | 0–8 mils | 5 m | Bulkhead | 0.43 kg |
| 990-10-70-01-01 | 0–10 mils | 7 m | DIN Rail | 0.43 kg |
| 990-04-70-02-01 | 0–4 mils | 7 m | Bulkhead | 0.43 kg |
| 990-08-70-03-01 | 0–8 mils | 7 m | DIN + Screws | 0.43 kg |
| 990-10-50-03-01 | 0–10 mils | 5 m | DIN + Screws | 0.43 kg |
Popular Bently Nevada Models
| Model Number | Description | Output Type | Weight |
|---|---|---|---|
| 3500/42M | Proximitor Seismic Monitor | Dynamic | 0.65 kg |
| 330180-91-05 | 3300 XL Proximitor Sensor | Dynamic | 0.45 kg |
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