Products Description
| Company Information | |||
| sales@xmjzjsgs.com | |||
| Mobile | +8613666033393 | ||
| +8613666033393 | |||
| 13666033393 |
Technical Specifications
| Parameter | Description |
|---|---|
| Model | Bently Nevada 990-04-50-02-00 Vibration Transmitter |
| Dimensions | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
| Input Signal | 3300 NSv non-contacting proximity probe and extension cable |
| Output Signal | 4 to 20 mA DC proportional to vibration amplitude |
| Power Supply | 12 to 35 VDC |
| Frequency Response | 5 Hz to 6,000 Hz (+0, -3 dB) |
| Linear Output Range | 1.4 mm (55 mils), starting at approx. 0.25 mm from surface |
| Incremental Scale Factor | 7.87 mV/μm (200 mV/mil), ±6.5% typical, ±10% worst case |
| Probe Gap Range | 0.5 to 1.75 mm (20 to 55 mils) |
| Max Loop Resistance | 1000 Ω at 35 VDC |
| Current Limit | 23 mA typical |
| Zero and Span Adjustment | Non-interacting external potentiometers |
| Power-up Inhibit | Output <3.6 mA for 2–3 s after power-on |
| Not OK/Signal Defeat | <3.6 mA within 100 μs; auto-recover in 2–3 s |
| Output Impedance | 10 kΩ (calibrated for 10 MΩ load) |
| PROX OUT Output | Non-isolated; use 122115-01 adapter for AC-powered tools |
| Operating Temp (Tx) | -35°C to +85°C |
| Storage Temp (Tx) | -52°C to +100°C |
| Operating Temp (Probe) | -52°C to +177°C |
| Storage Temp (Probe) | -52°C to +177°C |
| Relative Humidity | 100% condensing, non-submerged |
| Minimum Target Size | 9.5 mm diameter |
| Mounting Options | DIN rail clips or bulkhead screws |
FAQ
Frequently Asked Questions (FAQ)
Q1: Is this transmitter compatible with all Bently Nevada probes?
A1: No. It is specifically designed for use with 3300 NSv probes. Other probe types may not function correctly.
Q2: Can this transmitter operate in high humidity environments?
A2: Yes. It features sealed construction suitable for up to 100% condensing humidity (non-submerged conditions).
Q3: Can I connect the PROX OUT signal directly to an oscilloscope?
A3: Not directly. The signal is non-isolated; use the 122115-01 test adapter to ensure safe and accurate measurement.
Q4: How does the system respond when a fault occurs?
A4: In case of a probe failure or loose connection, the transmitter drops its output below 3.6 mA within 100 μs.
Q5: Is it possible to adjust the measurement range?
A5: Yes. The transmitter includes accessible zero and span adjustments for fine-tuning.
Q6: What is the maximum loop cable length supported?
A6: With 35 VDC power, loop resistance must not exceed 1000 Ω. The actual cable length depends on wire specifications.
Q7: Is this device certified for hazardous areas?
A7: Yes. The 990 is certified for use in Zone 0/1 and Zone 2 hazardous areas under ATEX and CSA standards.
Q8: What happens when the device powers on after shutdown?
A8: Upon power-up, the transmitter holds output <3.6 mA for 2–3 seconds to indicate readiness status.
Tags
Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
