00/27 Vibration Monitor Description; Features - GE Bently Nevada 1900/27 Operation And Maintenance Manual

1. 1900/27 Vibration Monitor Description

The 1900/27 Vibration Monitor provides continuous vibration monitoring for
machinery where most of the shaft vibration is transmitted through the bearing to
the case. Vibration amplitude is a primary indicator of the overall mechanical
condition of rotating machinery. Many machine malfunctions, including rotor
imbalance, misalignment, and bearing wear can be detected with vibration
measurements. Typical applications include general purpose and essential
machines with roller element bearings like pumps, fans, and compressors.
This section helps familiarize you with the monitor by listing the features that
make the monitor flexible and describing the monitor controls that make the
monitor easy to use.

1.1 Features

The features of the 1900/27 Vibration Monitor make the monitor more reliable
and easier to use. Many of these features have been used on previous Bently
Nevada monitors and have proven to be useful for protecting machinery. You can
program some of the features of the monitor by using jumpers or the 6-position
Configuration switch.
Some of the non-programmable features are described below.
Transducer separate from monitor - Mounting only the transducer on the
machine requires less space and makes the transducer easier to install on
small machinery. Mounting the monitor away from the machine protects the
monitor from the harsh machine enviroment that is less suitable for
electronic instrumentation. This location makes it easier and safer for plant
personnel to access the monitor.
Digital LCD display - A digital liquid crystal display on the front of the
monitor indicates overall vibration or the Alert or Danger setpoints.
Because the monitor is designed to be mounted close to the machine rather
than on the machine, the monitor can be located where service personel
can read it easily.
Status LED indicators - Four LEDs on the front of the monitor indicate the
status of the monitor. These LEDs show whether the monitor is OK, in alarm,
or bypassed.
Remote Reset - A front panel reset button and remote reset terminals let
you reset latched relays or flashing LEDs without turning the monitor off.
The remote reset terminals allows the monitor to be reset from a remote
location without having to open the weatherproof enclosure.
Section 1 - 1900/27 Vibration Monitor Description
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