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The 990 Vibration Transmitter is intended primarily for the original equipment manufacturers (OEMs) of centrifugal air compressors or small pumps, motors, or fans who prefer to provide a simple 4 to 20 mA proportional vibration signal as the input to their machinery control system.

The transmitter is a two-wire, loop-powered device that accepts input from our 3300 NSv proximity probe and its matching extension cable (available in 5 m and 7 m system length options).

The transmitter conditions the signal into appropriate peak-to-peak vibration amplitude engineering units, and provides this value as a proportional 4 to 20 mA industry-standard signal as the input to the control system where machinery protection alarming and logic occurs†.

Frequently Asked Questions

1. What is the Bently Nevada 190501-20-00-CN Velocity Transducer?

The Bently Nevada 190501-20-00-CN is a Velomitor CT Velocity Transducer designed to measure casing vibration on low-speed rotating machinery.

2. What is the sensitivity of the 190501-20-00-CN?

The transducer features a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, providing accurate vibration measurements for machinery protection and diagnostics.

3. What is the typical dynamic output impedance?

The 190501-20-00-CN has a typical dynamic output impedance of less than 400 Ω, allowing reliable signal transmission with minimal loss over long cable runs.

4. What is the 190501-20-00-CN operating temperature range?

The 190501-20-00-CN velocity transducer is designed to operate in temperatures from -40°C to +85°C (-40°F to +185°F), making it suitable for demanding indoor and outdoor industrial environments.

Product Applications

Oil & Gas/Petrochemical: Monitor large air-cooled units, critical pumps, and compressors to ensure equipment safety in high-temperature, high-pressure, or flammable environments.

Power Industry: Provide low-frequency vibration protection for circulating water cooling tower fans, air-cooled island fans, and auxiliary equipment in power plants to prevent unplanned shutdowns due to rotor imbalance or misalignment.

Metallurgy & Chemical: Provide real-time vibration velocity monitoring and fault warnings for low-speed rotating heavy-duty process fans and cooling equipment.