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Description：

The 990 Vibration Transmitter is intended primarily for theoriginal equipment manufacturers (OEMs) of centrifugal aircompressors or small pumps, motors, or fans who prefer toprovide a simple 4 to 20 mA proportional vibration signal asthe input to their machinery control system.

The transmitter is a two-wire, loop-powered device thataccepts input from our 3300 NSv proximity probe and itsmatching extension cable (available in 5 m and 7 m systemlength options).

Specification：

Frequently asked questions

Q1: What is the Bently Nevada 990-04-70-03-00 Vibration Transmitter?

A1: It is a vibration transmitter designed for continuous machinery condition monitoring, converting vibration signals into a standard 4–20 mA output for industrial control systems.

Q2: What does the 990-04-70-03-00 full-scale option “04” represent?

A2: The “04” option indicates a vibration measurement range of 0 to 4 mils peak-to-peak (0–100 µm peak-to-peak).

Q3: What does the 990-04-70-03-00 system length option “70” mean?

A3: The “70” option specifies a system cable length of 7.0 metres (23.0 feet).

Q4: What type of output signal does this transmitter provide?

A4: It provides a standard 4–20 mA analog output signal for integration with PLCs, DCS, and monitoring systems.

Q5: What is the 990-04-70-03-00 maximum current consumption?

A5: The 990-04-70-03-00 maximum current consumption is 23 mA during operation.

Product Applications

Oil and Gas & Petrochemical Industry: Used to monitor centrifugal air compressors, pumps, motors, and fans to prevent unexpected shutdowns due to excessive vibration.

Power Generation & Industrial Machinery: Applied to critical rotating equipment such as turbines and fans.

Wastewater Treatment: Applied to mainstream aeration equipment such as single-stage high-speed centrifugal blowers.

Manufacturing & Assembly Industry: As an OEM (Original Equipment Manufacturer) component, integrated into mechanical control systems, providing simple 4-20mA proportional vibration signals.