990-05-70-03-00 Bently Nevada | 990 Vibration Transmitter

Overview

The Bently Nevada 990-05-70-03-00 Vibration Transmitter is a reliable, high-performance device designed for industrial vibration monitoring. Built with robust materials like stainless steel and PPS (Polyphenylene Sulfide), this transmitter is suitable for demanding environments where precision and durability are essential. The transmitter accepts input from a non-contacting 3300 NSv Proximity Probe and provides a 4-20 mA output, making it ideal for monitoring critical machinery vibrations in a variety of applications.

Technical Specifications

• Brand: Bently Nevada
• Model: 990 Vibration Transmitter
• Product Number: 990-05-70-03-00
• Made in: U.S.A
• Full-Scale Option: 0-5 mils pp (0-125 μm pp)
• System Length Option: 7.0 meters (23.0 feet)
• Mounting Option: DIN clips and screws
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 303 or 304 stainless steel (SST)
• Probe Cable: 75Ω coaxial, fluoroethylene propylene (FEP) insulated
• Cable Armor (optional): AISI 302 SST with optional FEP outer jacket
• Weight: 0.82 kg
• Input: +12 to +35 Vdc
• Output: 4 to 20 mA signal
• Loop Accuracy: ±1.5%
• Maximum Loop Resistance: 1,000 Ω including cable at 35 Vdc
• Current Limiting: 23 mA typical
• Probe Gap: Between 0.5 and 1.75 mm (20 and 55 mils)

FAQ

1. What is the maximum distance between the probe and the target?
   The probe gap must be between 0.5 and 1.75 mm (20 and 55 mils) for accurate readings.
2. What is the maximum loop resistance supported by the transmitter?
   The maximum loop resistance is 1,000 Ω, including cable at 35 Vdc.
3. Can the signal output be disabled?
   Yes, the signal output will drop to less than 3.6 mA in the event of a Not OK condition and will restore within 2-3 seconds once the condition is cleared.

For more detailed information:990 Vibration Transmitter Datasheet