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2、EC 61224:2012 i . i . iii 1 1 2 .1 3 1 3.1 ( ) (Loop current step response).2 3.2 ( ) .2 4 3 4.1 .3 4.2 3 4.3 .4 1 4 2 5 KS C IEC 61224:2012 ii . , , . , , . KS C IEC 61224:2012 iii 1993 IEC 61224, Nuclear reactors Response time in resistance temperature detectors(RTD) In situ measurements . KS C IE
3、C 61224:2012 Nuclear reactors Response time in resistance temperature detectors(RTD) In situ measurements 1 , . . . 2 . 2.1 (RTD) . . (thermowell, glove finger) . “ ” ( , ) . 2.2 (response time) (step change) , 63.2 % . . . , ( ： ) . 3 . KS C IEC 61224:2012 2 3.1 ( ) (Loop current step response) 3.1
4、1 (Wheatstone Bridge) , . . . . 3.1.2 . 2 1 . 2 (Joule effect) . . . ： )pp(K)p(Hii1= ： )pp()z(p)p(Hiijj2= K ： Biot ( ) p ： pi ： zj ： H1(p) H2(p) ： R1(t)+iii0t)pexp(AA R2(t)+iii0t)pexp(BB R2(t) (pi) R1(t) . , H2(p) H1(p) . 1 . 3.2 ( ) KS C IEC 61224:2012 3 ： (direct value) . , . , . ( ) , . . ( 2) (
5、Autoregressive： AR) . , AR . , . . 2 . ： 4 4.1 . ( , 4 40 mA ) , 40 Hz ； . . . . , ( , , ) . ( ) . 4.2 . KS C IEC 61224:2012 4 ( , ) . ( ) , , ( 15 ) , . 4.3 . . R1(t)： R2(t)： 1 . (s) KS C IEC 61224:2012 5 2 . . . (Hz) (s) (FFT) 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS C IEC 61224:2012 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Nuclear reactorsResponse time in resistance temperature detectors (RTD)In situ measurements ICS 27.120.10
