Speed Sensors of Turbine

Turbine Speed Sensors - When RPM Counts
By Rosa Telip Ten

With turbine technology finding its way into more and more aspects of todays high tech world, many people just like yourself may find themselves in uncharted water in having to deal with them. The fact is, that turbines can be simple or extremely complex depending on what they are used in.

A Complex Turbine

For instance, a modern jet will have a highly complex turbine engine that burns fuel inside a series of alloy fan bladed to generate thrust. This would be a highly complex example of a turbine system being used to generate kinetic energy and force.

A Simple Turbine Engine

At the same time, the simple spinning vent on the roof of a house is yet another example of a far more simpler turbine engine. Even though it has only one moving part, it is by definition, a turbine engine none the less. Heat in the attic carries the energy that powers the roof vent turbine to spin, causing it to suck air out of the attic, thereby ventilating it.

Turbine Speed Indicators

A turbine speed sensor is but one of the many types of sensors that would be found on a complex turbine engine. Why is it necessary to know the speed that a turbine in an engine is spinning? If the engine is a jet engine, the the turbine is the main power source and the speed that it is rotating would be a prime indicator propulsion.

Turbo Charged Air Intake Systems

Also, a turbine can be an integral part but not the main component of a propulsion system or engine. A prime example of this would be a car with a turbo charged intake system. In this case a turbine speed sensor would provide real time information on how the air intake system is functioning at any given time.

Article by Rosa Telipten. Here you will find everything you wanted to learn regarding Turbine Speed Sensor and even Magnetic Speed Sensors

Article Source: _http://EzineArticles.com/?expert=Rosa_Telip_Ten

Real-Time Optical Fuel-to-Air Ratio
Sensor for Gas Turbine Combustors
ABSTRACT
The measurement of the temporal distribution of fuel in gas turbine
combustors is important in considering pollution, combustion
efficiency and combustor dynamics and acoustics. Much of the
previous work in measuring fuel distributions in gas turbine
combustors has focused on the spatial aspect of the distribution.
The temporal aspect however, has often been overlooked, even
though it is just as important. In part, this is due to the challenges
of applying real-time diagnostic techniques in a high pressure
and high temperature environment. A simple and low-cost instrument
that non-intrusively measures the real-time fuel-to-air ratio (FAR) in
a gas turbine combustor has been developed. The device uses a dual
wavelength laser absorption technique to measure the concentration
of most hydrocarbon fuels such as jet fuel, methane, propane, etc. The
device can be configured to use fiber optics to measure the local FAR
inside a high pressure test rig without the need for windows. Alternatively,
the device can readily be used in test rigs that have existing windows
without modifications. An initial application of this instrument was
to obtain time-resolved measurements of the FAR in the premixer of a
lean premixed prevaporized (LPP) combustor at inlet air pressures and
temperatures as high as 17 atm @ 800 K, with liquid JP-8 as the fuel.
Results will be presented that quantitatively show the transient nature
of the local FAR inside a LPP gas turbine combustor at actual operating
conditions. The high speed (kHz) time resolution of this device, combined
with a rugged fiber optic delivery system, should enable the realization of a
flight capable active-feedback and control system for the abatement of
noise and pollutant emissions in the future. Other applications that
require an in-situ and time-resolved measurement of fuel vapor
concentrations should also find this device to be of use.

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