Instrumentation
In the instrumentation section, the types of precision instruments required for industrial processes are introduced. Precision instruments are in fact the infrastructure of a control and automation system and include tools such as: types of controllers , indicators , transmitters , recorders , etc., which are the task of measuring, transmitting, displaying, recording and controlling important physical parameters such as Temperature , pressure , flow , liquid level , etc. in industrial processes are accurately borne. Precision instruments can be categorized in two ways, one in terms of the type of operation of this instrument, for example, a tool that controls the temperature or Pressure , humidity , or surface are known as controllers, as are the means for displaying these values, known as indicators, and the means for transmitting information about values such as pressure, flow , temperature , pressure ,and surface as standard signals. They are called transmitters.
The instrument can also be categorized in terms of the parameter on which the instrument must operate, for example sections: temperature instruments such as temperature controller, temperature transmitter and thermometer or temperature display , Instruments for accurate pressure measurement and control, flowmeter or flow measurement of fluids and transfer of flow or flow controlvalues, level measurement or measurement tools for materials inside tanks and their precise control, and speedometer tools, hygrometer tools,etc.
In this website, both categories are considered and in the field of precision instruments, you can first go to the appropriate category according to the parameter to be controlled and measured, or according to what you expect from this instrument. Choose carefully.
Sections in order of importance of the parameter to
pressure 
or pressure : Pressure
Temperature: Temperature
Level or Level: Level
Flow or flow: Flow
And in terms of performance to
Meter or display: Meter
Controller: Controller
Indicator: Indicator
Transmitter: Transmitter
Valve or control valve: Valve or Control Valve
Calibrator: Calibrator
Recorder or Stabilizer: Recorder Or Logger
Classified.
The first factor in choosing a precision instrument, as its name implies, is its accuracy. . For example, a Pressure gauge in the measuring range of 100 times with an accuracy of one percent full scale (total measuring range) with positive and negative accuracy once is accurate for each measured number.
Many factors are effective in choosing the exact tool, such as repeatability and ...
