Bently Nevada 990-04-XX-01-05 | Two-wire Vibration Transmitter

Technical Specifications for 990-04-XX-01-05:

• Model: Bently Nevada 990-04-XX-01-05
• Frequency Response: 5 Hz to 6,000 Hz, ±0.3 dB for high-fidelity signal measurement.
• Power Supply: 12 to 35 Vdc, consuming minimal power.
• Signal Output: 4 to 20 mA analog signal output with ±1.5% accuracy over the full-scale range.
• Operating Temperature: -35°C to +85°C (-31°F to +185°F); Storage Temperature: -52°C to +100°C (-62°F to +212°F).
• Probe Gap: Must be gapped between 0.5 and 1.75 mm (20 and 55 mils) from the target.
• Maximum Loop Resistance: 1,000 Ω, including cable, at 35 Vdc.
• Cable Length: Maximum distance of 3 meters (10 feet) from the sensor to the transmitter.
• Transmitter Weight: 0.43 kg (0.9 lbm).

FAQs:

1. What is the maximum allowable probe gap for accurate readings?
   The probe must be gapped between 0.5 mm (20 mils) and 1.75 mm (55 mils) from the target for optimal performance.
2. What is the power supply requirement for the Bently Nevada 990 Vibration Transmitter?
   The unit requires a +12 to +35 Vdc power input at the transmitter terminal.
3. What are the mounting options for the 990 Vibration Transmitter?
   It comes with 35 mm DIN rail clips for straightforward installation.
4. How does the signal output behave during a “Not OK” condition?
   The output will drop to less than 3.6 mA within 100 µs when a “Not OK” condition occurs and will restore within 2-3 seconds after the issue is cleared.

For more detailed information:990 Vibration Transmitter Datasheet