TERMINOLOGY & SYMBOLS IN CONTROL ENGINEERING by SAMSON

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Fundamentals â‹… Terminology and Symbols in Control Engineering

Graphical symbols used for process control are specified in DIN 19227, including symbols for sensors, adapters, controllers, control valves, operating equipment, generators, conduits and accessories (Figs. 11 and 12). Howegraphical symbols

ver, there are a number of other DIN standards covering graphical symbols,

for process control

such as DIN 1946, DIN 2429, DIN2481, DIN 19239 and DIN 30600 (main standard containing approximately 3500 graphical symbols). It is recommended to always use standardized graphical symbols. In case a standardized symbol does not exist, you may use your own.

P

Pt 100 DIN T

L

P

L

pressure sensor

temperature sensor

level sensor

F F

analog indicator

adjuster

flow sensor

i/p converter, electr. into pneum. standardized signal

current transmitter with pneumatic standardized output signal

P

pressure transmitter with electric standardized output signal

Fig. 12: Graphical symbols for sensors, transmitters, adjusters and indicators according to DIN 19227 Part 2

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SAMSON AG â‹… V74/ DKE

I


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