Overview
Moreover, this 2-wire loop-powered transmitter converts proximity probe signals into industry-standard current outputs for control systems.
Therefore, maintenance teams can easily integrate continuous vibration data into existing PLC or DCS architectures.
In addition, the compact industrial design supports installation in space-limited control cabinets and field enclosures.
Specification
| Specification | Details |
|---|---|
| Model Number | 990-04-XX-01-00 |
| Product Type | Vibration Transmitter, 2-wire loop-powered |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Measured Parameter | Shaft vibration, peak-to-peak displacement |
| Input Sensor | One non-contacting proximity probe with extension cable |
| Output Signal | 4–20 mA proportional to vibration level |
| Power Supply | Loop-powered, 12 to 35 V DC |
| Loop Accuracy | ±1.5% of full-scale output |
| Maximum Loop Resistance | Up to 1,000 Ω at 35 V DC |
| Current Limiting | Approximately 23 mA |
| Zero / Span Adjustment | External, non-interacting potentiometers |
| Fault Output (NOT OK) | Output drops below 3.6 mA during detected fault |
| Fault Recovery Time | Approximately 2–3 seconds after fault clearance |
| Power-up Inhibit | Output held below 3.6 mA during startup delay |
| Frequency Response | Approximately 5 Hz to 6,000 Hz (±3 dB) |
| Operating Temperature | –35°C to +85°C (–31°F to +185°F) |
| Storage Temperature | –51°C to +100°C (–60°F to +212°F) |
| Humidity Rating | 5–95% non-condensing |
| Mounting Method | DIN rail mounting |
| Housing | Rugged industrial enclosure |
| Compliance | CE and regional approvals, market dependent |
FAQ
A1: It works with one non-contacting proximity probe and compatible extension cable.
Q2: Is the transmitter loop-powered?
A2: Yes, it operates on a 12–35 V DC 2-wire loop-powered supply.
Q3: What output signal does the transmitter provide?
A3: The unit delivers a standard 4–20 mA signal proportional to vibration level.
Q4: How does the transmitter indicate a fault condition?
A4: During a detected fault, the output drops below 3.6 mA.
Q5: What industries commonly use this vibration transmitter?
A5: It is widely used in power generation, oil and gas, chemical, and general process industries.
Bently Nevada Top Products
| 3500 | 3300 | Probe&Cable |
| 3500/05-01-01-00-00-00 | 3300/05-22-00-00 | 990-04-70-01-00 |
| 3500/05-01-01-05-00-01 | 3300/05-24-00-00 | 990-04-70-02-00 |
| 3500/05-01-02-05-00-01 | 3300/45-02-01-03-00 | 990-04-XX-01-00 |
| 3500/05-01-03-05-00-01 | 3300/45-02-02-03-00 | 990-04-XX-03-00 |
| 3500/05-02-04-00-00-00 | 3300/48-01-01-01-00 | 990-05-50-02-01 |
| 3500/05-02-04-00-00-01 | 3300/48-02-01-00-00 | 990-05-70-01-00 |
| 3500/05-02-05-00-00-00 | 3300/50-01-01-00-00 | 990-05-70-01-01 |
| 3500/05-02-05-00-00-01 | 3300/50-02-01-00-00 | 990-05-70-02-00 |
| 3500/20 125744-02 | 3300/20-13-02-01-00-00 | 990-05-70-03-00 |
| 3500/22 125768-01 | 3300/40-13-01-01-00-00 | 990-05-XX-03-05 |
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