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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 990-08-50-01-05 used for?

A1:The Bently Nevada 990-08-50-01-05 is a two-wire vibration transmitter designed to convert machinery vibration measurements into a standard 4–20 mA output signal for continuous condition monitoring and machinery protection applications.

Q2: What type of output signal does the 990-08-50-01-05 transmitter provide?

A2:The 990-08-50-01-05 transmitter provides a 4–20 mA proportional output signal, allowing vibration data to be easily integrated with PLCs, DCS systems, SCADA platforms, and other industrial control systems.

Q3: What power supply is required for operation?

A3:The 990-08-50-01-05 transmitter operates from a loop-powered supply of +12 to +35 VDC, simplifying installation by using the same wiring for both power and signal transmission.

Q4: What is the bandwidth of the 990-08-50-01-05 990 vibration transmitter?

A4:The 990-08-50-01-05 transmitter has a frequency bandwidth of 5 Hz to 6 kHz, enabling accurate monitoring of a wide range of machinery vibration frequencies.

Product Applications

Petroleum & Gas Plants: Real-time monitoring of shaft vibration and displacement of crude oil transfer pumps and large natural gas compressor units; explosion-proof design meets the requirements of harsh environments containing toxic, hazardous, and flammable gases.

Chemical & Petrochemical Plants: Continuous online status monitoring of various critical rotary pumps, motors, and mixers to prevent material leakage or mechanical shutdown due to severe vibration.

Power Generation: Non-contact bearing vibration measurement of small and medium-sized steam turbines, auxiliary water pumps, forced draft fans, and induced draft fans; a key component ensuring continuous and safe power generation for the power grid.

Air Separation Plants: OEM supporting equipment for core centrifugal air compressors in large air separation units, used to output standard 4-20mA signals for direct connection to the plant's main control system.

Water Treatment & Heavy Industry: Conventional vibration data acquisition and over-limit protection for large aerators and large industrial water pumps.