Overview
Moreover, this 2-wire loop-powered device converts proximity probe signals into stable current outputs for modern control systems.
Therefore, operators can easily integrate vibration feedback into PLCs, DCS platforms, or asset monitoring architectures.
In addition, its compact industrial design supports installation in control cabinets, junction boxes, and field-mounted enclosures.
Specification
| Specification | Details |
|---|---|
| Model Number | 990-04-XX-03-00 |
| 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 Indication (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) |
| Full-scale Range Option | 0–4 mils peak-to-peak (0–100 μm peak-to-peak) |
| 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 |
| Mounting Option | DIN clips and mounting screws |
| Housing | Rugged industrial enclosure |
| Compliance | CE and regional approvals, market dependent |
FAQ
A1: It measures shaft vibration as peak-to-peak displacement using a proximity probe.
Q2: Is the 990-04-XX-03-00 transmitter loop-powered?
A2: Yes, it operates on a 12–35 V DC 2-wire loop-powered supply.
Q3: How does the transmitter indicate a fault condition?
A3: During a fault, the output current drops below 3.6 mA to signal a NOT OK condition.
Q4: Can the transmitter be mounted on a DIN rail?
A4: Yes, the unit supports standard DIN rail mounting for control cabinet installations.
Q5: Which industries typically use this vibration transmitter?
A5: It is widely used in power generation, oil and gas, chemical processing, and general industrial applications.
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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