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! f7 E; v3 ? x# DStandard(s): Generality No. Year4 W1 c2 {! \0 P( O. U
DSH( a1 w0 S g7 s* T8 B# C2 d; k
251B
# z1 n5 `4 z, Y2009
1 l* o* [5 y+ ~, A" I+ PCategory: Various
% m4 n! J) k0 O# ^, W2 xSubclause(s): ---
' G7 G8 X; u J1 e( U2 EDeveloped by:9 B$ F. E' u( u* u6 t g
WG4 – WG1
9 [% H$ ^7 d7 BSubject: Measurement accuracy Key words:9 X7 b: n, \ s) `7 e% e B' ]1 \
- Measuring range8 d6 @- p/ j- U6 q/ r: w" ]
- Accuracy
0 L1 V" G- ~/ n. D7 V+ P* o- Instrument
4 l6 S. n: h/ i( M& p+ w, HDecision confirmed at the 46th
$ |; |# Q1 c' ]5 g! ^7 M }CTL Plenary Meeting, in 2009
8 S$ j" N* _* }5 ]5 U3 rInstrument Accuracy Limits+ J( R: Q9 |! H$ v
Measurement values stated in a CB Test Report shall be made with instruments with accuracies within
# r4 o5 e0 h' \% _0 s' lthe limits stated below. These values apply unless more stringent requirements are given in the, Y! ? i6 T- x, E- Z) N
reference standard.
4 K8 D$ k/ Y0 P% PParameter Range Instrument accuracy of
: v/ L$ \/ C* _( _Measuring Range2 y/ ?# ^( E; R
Voltage
" u. Y& j) p8 ]: T- Up to 1000 V up to 1 kHz ± 1,5%% O0 v* R% j! M# s' V( |. Z
1kHz up to 5 kHz ± 2%0 i2 @9 q2 @! y2 v# q3 x! v0 C
5 kHz up to 20 kHz ± 3%
; }" d% l" ]7 g C$ V20 kHz and above ± 5%) k6 l$ Y2 L- J
- 1000 V and above dc up to 20 kHz ± 3%" J* b" g. u7 |) `. z, Z
20 kHz and above ± 5%
. F2 j* }( D/ O' u1 O! \( pCurrent0 L) I3 m+ r- z* v. F" j2 U( g, K
Up to 5 A dc up to 60 Hz ± 1,5%
! O& k" J; ]* [0 j! X# L- ]60 Hz up to 5 kHz ± 2,5%/ _, B" W9 h# a5 L: [
5 kHz up to 20 kHz ± 3,5%/ Z1 b1 V; W6 v
20 kHz and above ± 5% Q g Z# b' p; e
5 A and above dc up to 5 KHz ± 2,5%
0 J$ V) ?" k8 }+ L/ o8 P1 D( W. j5 kHz up to 20 kHz ± 3,5%
8 X5 i% g- b' O/ |6 Y5 L20 kHz and above ± 5%
1 Z1 [6 J5 W+ ^" ]! R) n5 e, _: gLeakage current3 s" E/ [% t% N& i( P) q3 F, ]
- up to 30 mA 50/60 Hz ± 3,5%6 O9 H, c/ n0 `" H
- 30 mA and above 50 Hz - 5 kHz ± 5%5 W2 B3 u/ j" j$ A1 B
Power (50/60 Hz) up to 1 W ± 3%) |0 P! j8 H. T0 Y" }- @. o
1 W up to 3 kW ± 3%# k1 I4 W2 o5 @9 U# {1 c
3 kW and above ± 5%$ N- b- i1 t. S6 g' _( @8 G
Power Factor (50/60 Hz) ± 0,052 E: ^: ~* t3 k. J7 j( X
Frequency up to 10 kHz ± 0,2%
& a2 G3 f; L- o# WResistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
1 {: o$ h. r$ R1 T! |* ?3 f' Vabove 1 T ± 10%
a; l' G9 s7 ?9 n& u$ {, H2 kfor all other cases ± 3%1 l8 Q" o& }7 ~* G
Parameter Range Instrument accuracy of
4 x2 [, m" Q$ g. L7 ~- m+ s' FMeasuring Range. S) b) f8 I* \/ v. ^- M
Temperature 1,2+ T' T# q9 Z6 S( Q4 ~* {; }4 r2 ]
below 100° C ± 2°C
0 r+ w. w+ I- Z4 l! b4 _/ h9 E& z100° C up to 500° C ± 3% `( |8 t# z$ U6 O" v
- 35°C down to – 50°C ± 3°C
: H [5 z! d9 @& F# K1 ^2 qTime 10 ms up to 200 ms ± 5%: F' O' p. R4 D; d6 b
200 ms up to 1 s ± 10 ms
d0 Q# J6 ]) k! q# c1 s and above ± 1%
" P3 w: V _3 z/ K9 a' @% x: F1 gLinear dimensions up to 1 mm ± 0,05 mm
! I8 |5 d) c* R1 mm up to 25 mm ± 0,1 mm, j& O G# o( N) ?( @! {- Z
25 mm and above ± 0,5%
7 A. P6 s2 B2 j( i" d, ~& v yMass above 10 g and up to 100 g ± 1%
* o% g/ q& T2 a100 g up to 5 kg ± 2%: r6 w' }. a# C: j
5 kg and above ± 5%
8 n/ ~, K- {$ |% c4 Z( y" [Force for all values ± 6%! u5 E0 r- X' O& r$ w8 X* @
Mechanical energy for all values ± 10%
. u' f% h2 d. Y! X/ C* }1 e* jTorque ± 10%
2 W1 o2 c7 w _7 P) LAngles ± 1 degree w; S: Y9 w' T; P- g+ t4 k# D
Relative humidity 30% to 95% RH ± 6% RH0 L% |. `# r' K/ i4 {% p' O
Barometric air pressure ± 10 kPa, r: d0 z T3 r8 L% ?, s2 g2 d
Gas & fluid pressure for static measurement ± 5% T4 x* {6 O% w; N
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,: @3 Z) _+ {8 Y
“T” and “ J”, premium grade, are recommended.
3 y ^; `1 l( l8 I7 \$ x- K2 Not for measurements related to relative humidity.2 C2 x$ _( j, A0 N S2 `
# f6 |- I3 e0 y5 Z+ ~# l3 G
% q; P$ N9 m7 B" L8 M) A |
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