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Vibration Measurement

What is Turbine Supervisory Instrumentation (TSI) ?

S Bharadwaj Reddy
The Turbine Supervisory Instrumentation or TSI includes those measurements which monitor the behavior of the rotor train assembly. These include the speed, vibrations, axial position and differential expansion of the turbo...

Gap Voltage of Bently Nevada Vibration Probe

S Bharadwaj Reddy
Gap voltage (VDC) is a direct representation of distance between the probe’s tip and the shaft’s surface. This is the quiescent voltage that needs to be adjusted between the proximitor’s...

Different Types of Turbine Protective Devices

S Bharadwaj Reddy
This article provides the list of different types of Turbine Protective Devices like turbine over speed trip, low lube oil pressure, axial displacement, turbine temperature and turbine vibrations. Turbine Protective Devices...

Proximity Transducer System Operation

S Bharadwaj Reddy
Proximity Transducer System provides an output voltage directly proportional to the distance between the probe tip and the observed conductive surface. It is capable of both static (position) and dynamic (vibration) measurements, and...

Mechanical Vibration Switch Principle

S Bharadwaj Reddy
Mechanical Vibration Switches provide vibration protection for low- to medium-speed machinery. An inertia sensitive mechanism activates a snap-action switch with SPDT output contacts if the vibration exceeds an adjustable setpoint....

Non-contact Vibration Measurement

S Bharadwaj Reddy
Types of Non – Contact Vibration Measurement Path Measurement Capacitance Eddy Current Hall Effect Optical Speed Measurement Laser-Doppler vibrometer Seismometer Acceleration measurement Path measurement Capacitive Principle The capacitive principle can...

Contact Vibration Measurement

S Bharadwaj Reddy
Types of Contact Vibration Measurement Path Measurement Potentiometer Type LVDT Type Speed Measurement Electrodynamics Seismometer Acceleration measurement Piezoelectric sensor Piezo-resistive sensor Resistive sensor Inductive sensor Path Measurement Potentiometric Transmitter The...

Speed Probe Working Principle

S Bharadwaj Reddy
Rotating machinery requires speed sensing for functional systems such as control, monitoring, and safety. To ensure safe operation, it is especially important to monitor rotor speeds in turbine engines. Inductive...

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