Bently Nevada 991 Thrust Transmitter

The 991 Thrust 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 axial displacement (thrust) signal as the input to their machinery control system.

The transmitter is a 2-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 engineering units proportional to the shaft’s axial position1, and

provides it as a 4 to 20 mA industry-standard signal for input to the control system where machinery

protection alarming and logic occurs2.

The 991 transmitter provides the following notable features

• Integrated Proximitor* Sensor requires no external unit

• Non-isolated “PROX OUT " and "COM" terminals plus a coaxial connector

provide a dynamic vibration and gap voltage signal output for diagnostics3.

• Non-interacting zero and span potentiometers under the Transmitter label

supports loop adjustment.

• Test Input pin allows quick verification of loop signal output, using a variable

DC voltage source as the input.

• A Power-up Inhibit circuit eliminates signal errors due to line voltage

transients.

• A Not OK/Signal Defeat circuit prevents high outputs or false alarms due to a

faulty proximity probe or loose connection.

• Choice of DIN-rail clips or bulkhead mounting screws as standard options

simplifies mounting.

• Potted construction for high humidity (up to 100% condensing)

environments.

• Compatibility with 3300 NSv proximity probe allows transducer installation

in small areas with minimal clearance, typical of centrifugal air compressors.

The Flame Analysis Unit, or FAU810, is ABB’s latest leading-edge fl ame analysis device.

The FAU810 is designed from the ground up for maximum

fl exibility, usability and reliability. It takes advantage of the latest technologies available to

make fl ame analysis as cost-effi cient as possible, while retaining ABB’s rock-solid reputation

as the most reliable instruments in the industry.

The FAU810 is easy to install and confi gure, fl exible to operate, and uses redundant Profi bus

DP-V1 or standard Modbus interfaces for easy and safe data exchange and tuning. You can connect

any type of ABB Flame sensing

device to the FAU810. This makes the FAU810 the standard module for all ABB Flame Scanner

application and the preferred solution for retrofi tting existing installation.

It determines if the current signal value is within the programmed limits as defi ned by Functions.

A variety of limits can be defi ned in the FAU810 to account for any situation that may occur in utility

or industrial boilers.

Sales Manager:May           Email:sales5@amikon.cn

Skype:+86-18106909650 Wechat:dcsfcs