Find is the controller reverse-acting or direct-acting

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Reference no: EM13268251

An electronic PI temperature controller has an output p of 12 mA when the set point equals the nominal process tmperature. The controller response to step change in the temperature set point of 3 mA (equivalent to a change of 5 degrees F) is shown below

t,s p, mA

0- 12

0+ 10

20 9

60 7

80 6

Determine the controller gain Kc (mA/mA) and the integral time, tau(sub l). Is the controller reverse-acting or direct-acting?

Reference no: EM13268251

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