If we have more I/o's in digital signals than analogue signals normally we choose DCS....and vice versa.
Instrumentation technologists, technicians and mechanics specialize in troubleshooting and repairing instruments and instrumentation systems. This trade is so intertwined with electricians, pipefitters, power engineers, and engineering companies, that one can find him/herself in extremely diverse working situations. An over-arching term, "Instrument Fitter" is often used to describe people in this field, regardless of any specialization. oo nga.
Instrumentation engineering is the engineering specialization focused on the principle and operation of measuring instruments which are used in design and configuration of automated systems in electrical, pneumatic domains etc. They typically work for industries with automated processes, such as chemical or manufacturing plants, with the goal of improving system productivity, reliability, safety, optimization and stability.
In addition to measuring field parameters, instrumentation is also responsible for providing the ability to modify some field parameters.
Some examples include:
Device Field Parameter(s)
Valve Flow, Pressure
Relay Voltage, Current
Solenoid Physical Location, Level
Circuit breaker Voltage, Current
Instrumentation can be used to measure certain field parameters (physical values):
These measured values include:
* pressure, either differential or static
* flow
* temperature - Temperature_measurement
* level - Level Measurement
* density
* viscosity
* radiation
* current
* voltage
* inductance
* capacitance
* frequency
* resistivity
* conductivity
* chemical composition
* chemical properties
* various physical properties
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Keys (1 Comment) 27th of January 2012
And I was just wonerding about that too!