Метрология, стандартизация и сертификация. Акмайкин Д.А. - 85 стр.

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МГУ им. Невельского | Владивосток

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85
R20/4 (112 ...) − '&  ), #  !* - &-
 &#  ) R20 ! !&  ( !-" (-
# &#" 112;
R40/5 (... 60) − '&  ), #  !* - ()-
 &#  ) R40 ! !&  ( /" (#
&#" 60.
 '&  ) ((&!#$ / &!# #- (!")$-
),  "$1! &!# +! * (#!#$  2,,
( !. !(#$*!" (# / ). ! 2" ((&-
! # $ )", (! " 8032-84.
*  '& / ) ! " *&!" ((&!
# $ ), -0" !!+ !#! &!#, !
*&0 +!,  )#)) !!+ ((!", 0,01; 0,1; 10;
100 ! . .).
() !(#$*$ (!*  ((&!#$  )
&!#,   #!.) #) #&,  !*−* -
 / *"  " ' $ (!" "!&! ) ,
#"!  8032-84. !*  ) (#&. (-
" (1 ('*!)  / ! (#!#$ / )
((&!#$ / &!# !  #)    ! -
(#!#$ .
%' .0! ) (#-!#$ / ((&!#$ / &!# (-
#&.   ' .0 "!& (!!, i− &#
 
q
i
= 1/5
i
= 10
i/R
.
'*&! ' .0 ) (#-!#$ / ((&!#$-
 / &!# (#&. '#!" '*&!. - 
! (#!#$ ) ((&!#$ / &!# * "K", (!":
KR5, KR10 {... 1,25}, KR20 {45...}, KR40 {300,...,75}.
!/! & (!"). ((&!#$  &!#, (-
  ( )" , # " - 2#/-
!& "!!:
) 3 =
;2,210
3
≈
) 12 =
;2,110
12
≈
) 6 =
;5,110
6
≈
) 24 =
.1,110
24
≈
       R20/4 (112 ...) − '       &       ) ,        #        !* -       & -
         &#                   ) R20 !            !&        ( !- " ( -
   # &# " 112;
       R40/5 (... 60) − ' &             ) ,       #        !* -        () -
    &#                   ) R40 !            !&        (       / " (       #
&# " 60.
          ' &           ) ( ( & ! #$ / &! # #- ( !" ) $-
 ),         " $1 ! &! #               +!     *        ( # ! #$       2,,
(           !. ! ( #$*          ! "( # / ) .              !2 "( ( & -
  ! #                  $ ) ", ( !            "           8032-84.
        *     '    & / )              !        " * & ! " ( ( & !
 #              $ ) ,         - 0 "        ! !+ !#! &! # , !
* & 0 +!,                      ) #) ) ! !+ ( ( !" , 0,01; 0,1; 10;
100 ! . .).
          (         ) ! ( #$*      $ ( !*           ( ( & ! #$          )
&! #,                     #! . ) #) # & ,                   !*−*            -
    /*       "             "       ' $ ( !"               " !& ! ) ,
    # " !                      8032-84.       !*          ) ( # & . ( -
   "(         1      ( ' *         !)           / ! ( # ! #$ / )
( ( & ! #$ / &! # !                                  #)                ! -
( # ! #$        .
       %'     .0! )        ( # -! #$ / ( ( & ! #$ / &! # ( -
# & .                  '   .0          " !&            (       !!, i− &#
                qi = 1/5i = 10i/R.
       ' * & ! '          .0         ) ( # -! #$ / ( ( & ! #$-
  / &! # ( # & .         ' # ! "        ' * & !. -
! ( # ! #$            ) ( ( & ! #$ / &! # *            "K", ( !" :
KR5, KR10 {... 1,25}, KR20 {45...}, KR40 {300,...,75}.
           ! / ! &            ( !" ). ( ( & ! #$           &! # , ( -
           ( ) " ,                 #     "    -           2#       /-
 !&         "! ! :
       )    3     = 3 10 ≈ 2,2; )    12    = 12 10 ≈ 1,2;
       )    6     = 6 10 ≈ 1,5; )    24    = 24 10 ≈ 1,1.
                                                                          85

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