Designed to provide high reliability for a plant’s most critical rotating machinery, the Casing Piezo Vibration Monitor monitors casing vibration via accelerometers.

This single tank monitor is used in conjunction with other CSI 6500 monitors to form a complete API 670 machinery protection monitor.

Applications include steam, gas, compressor and hydraulic turbine machinery.

The primary function of the case piezoelectric vibration monitor is www.abb-drive.com to accurately monitor case vibration and reliably protect machinery by comparing vibration parameters to alarm set points, actuated alarms and relays.

A case piezoelectric vibration sensor, sometimes referred to as a case absolute vibration sensor (not to be confused with a shaft absolute vibration sensor).

is an accelerometer or velocimeter whose output is acceleration or velocity.

Bearing case vibration monitors monitor the vibration of the bearing case in terms of acceleration or velocity in g (mm/sec).

Since the sensor is mounted on the bearing box, the vibration of the bearing box can be affected by many different sources.

These include rotor motion, foundation and bearing box stiffness, blade vibration, neighbouring machinery, etc.

When replacing ffeld sensors, many seismic sensors are replaced with piezoelectric sensors.

The 6125 monitor is designed for the new piezoelectric sensors.

Shell measurements are common in nuclear power applications. Case measurements using piezoelectric sensors are also common in rolling bearing machines and gearboxes.

Emerson recommends the use of piezoelectric sensors and piezoelectric sensor monitors when updating ffeld sensors and monitors.

The CSI 6500 is an integral part of PlantWeb® and the AMS Suite.

PlantWeb combines the Ovation® and DeltaV™ process control systems to provide operators with an integrated view of machine health.

The AMS Suite provides maintenance personnel with advanced predictive and performance diagnostic tools to accurately determine machine failures at an early stage.

Functional Features:

Dual-channel, 3 U-sized, 1-slot plug-in module that cuts cabinet space requirements in half compared to traditional four-channel 6U cards

API 670 compliant, hot-swappable modules

Remotely selectable limit multiplication and trip bypass

Pre- and post-buffered and proportional outputs, 0/4-20 mA outputs, 0 – 10 V outputs

Self-test features include monitoring hardware, power inputs, hardware temperature, sensors, and cables,

Hardware temperature, sensors and cables

Use with piezoelectric accelerometer and velocimeter sensors

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