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% S/ b p* J3 Y: ^ u* V# r5 \Standard(s): Generality No. Year
0 K! `' N% ~2 T5 x. K& iDSH
! g0 d* N: J+ X5 @251B
) U9 p7 `6 F2 d$ d, _2009* r5 |* t, G4 n! x0 R$ t3 J
Category: Various' c$ f! s: Z& p' C
Subclause(s): ---% L7 D8 x6 X i
Developed by:
; m9 I: g- d3 x" o/ z9 v, yWG4 – WG1
! v/ ^8 q: T/ y9 o; @# D( MSubject: Measurement accuracy Key words:
4 m( u# i( p, h! `2 O% D* Q1 X- Measuring range
1 R/ [) A+ g9 }0 ?/ |% _1 b6 ]- Accuracy, @! z7 u0 c' v: ]9 t B1 z1 ~' s/ U
- Instrument& j( i' R- |" c& k
Decision confirmed at the 46th; _2 q: `8 m. T+ B3 U
CTL Plenary Meeting, in 2009# W5 }; c- ]3 i8 G# ~1 z
Instrument Accuracy Limits) J" E g8 R5 ]0 Y
Measurement values stated in a CB Test Report shall be made with instruments with accuracies within* L( u7 z8 \2 ?6 _, z" b
the limits stated below. These values apply unless more stringent requirements are given in the
2 A, ~$ M' ~9 m7 z }! }6 V# {reference standard.# f5 W4 j9 M3 ?* e3 V
Parameter Range Instrument accuracy of& j& J6 H5 z _* a. _
Measuring Range
5 ^4 S) {+ F5 i% D/ VVoltage2 f; Z N& O5 ~( ?# G& z$ H
- Up to 1000 V up to 1 kHz ± 1,5%) N/ @! o& U" C/ t; p8 q; E
1kHz up to 5 kHz ± 2%( v% |4 s$ i/ A: O
5 kHz up to 20 kHz ± 3%
8 r ?- v6 A3 M- {' ~* G/ l+ `20 kHz and above ± 5%
8 ^- H& [' K1 y3 t- 1000 V and above dc up to 20 kHz ± 3%
+ L2 o O# N* z20 kHz and above ± 5%* f( ]" a5 ~: V Q1 `5 [, c/ j
Current6 ]9 A. G6 _3 q" Q: u
Up to 5 A dc up to 60 Hz ± 1,5%
# T8 _# J& d$ z3 n60 Hz up to 5 kHz ± 2,5%0 Q% Y. ~. _# r* Z& C
5 kHz up to 20 kHz ± 3,5%
" F3 ^& o- u( L5 g7 ^. h5 m! P9 |5 S20 kHz and above ± 5%
- a; y1 o. s. L. m. M# I5 A and above dc up to 5 KHz ± 2,5%, c& h2 s+ Y0 |2 p1 f
5 kHz up to 20 kHz ± 3,5%
7 ?$ y! o5 V$ i1 Y% O1 Z20 kHz and above ± 5%( \9 _( E! c: h
Leakage current
$ X, w l$ D4 e' t+ r# L: n! x- up to 30 mA 50/60 Hz ± 3,5%0 l0 J3 \2 R. T- [6 x) b
- 30 mA and above 50 Hz - 5 kHz ± 5%
) J6 f5 D* p! I1 R' @Power (50/60 Hz) up to 1 W ± 3%. f% G" M( _& Q; q- ^* J
1 W up to 3 kW ± 3%* O: O r8 g& z& G) D4 \0 q6 S
3 kW and above ± 5%
9 T1 J1 [1 E8 c; D8 [" V! j' dPower Factor (50/60 Hz) ± 0,05
8 z' t3 V4 g6 X/ L3 I& oFrequency up to 10 kHz ± 0,2%. P$ V9 e3 i( Q" y; z+ b
Resistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
$ w$ u. d+ z9 H c# n. uabove 1 T ± 10%6 |8 A. I) O2 C+ z; g/ A" q4 u
for all other cases ± 3%
& a! [1 `# o; d) V3 OParameter Range Instrument accuracy of
' I) k6 Y3 ]) r7 I0 ?# `: L3 `* VMeasuring Range- @8 Q! o& I8 n* K8 X' p& E; m
Temperature 1,2
. g, {/ O; |) U2 E1 j6 Y& E# obelow 100° C ± 2°C
8 Z. n6 @6 |- `100° C up to 500° C ± 3%
7 T8 d2 F% O1 f* O* x Y- 35°C down to – 50°C ± 3°C
N: x, g* t8 f0 C9 Q3 GTime 10 ms up to 200 ms ± 5%
f" n6 Y2 V" s5 [4 I4 b200 ms up to 1 s ± 10 ms
: B# m$ l) T* H3 y# l9 }7 z1 s and above ± 1%2 U/ |4 n, l8 p1 H
Linear dimensions up to 1 mm ± 0,05 mm( n+ s8 ]( j/ R3 A% w' C, r! I% L
1 mm up to 25 mm ± 0,1 mm
5 H/ r& i& ?6 u9 I25 mm and above ± 0,5%
3 Z# e6 F$ ]; IMass above 10 g and up to 100 g ± 1%0 h+ r' c" I8 j3 r1 O3 e" x
100 g up to 5 kg ± 2%' w$ i. u) l; o) D6 P+ o; | `' Y
5 kg and above ± 5%/ s6 _. K. l$ ]
Force for all values ± 6%
5 A. W4 I! ~3 m+ a1 }9 }0 HMechanical energy for all values ± 10%
7 i y Q6 M% v$ e: UTorque ± 10%
' a* f4 N d- N( z0 V1 L% AAngles ± 1 degree
4 ]) j# Q8 }& d9 nRelative humidity 30% to 95% RH ± 6% RH3 M2 U5 }+ c# _1 g' @1 f V/ ~
Barometric air pressure ± 10 kPa
0 ?, t$ C4 Y# W% NGas & fluid pressure for static measurement ± 5%5 H' }$ k" @( }4 p
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,
+ g q2 n3 X7 N) i& q+ l) }“T” and “ J”, premium grade, are recommended.
. O3 t5 R+ P, [: T6 g( ^6 j+ [2 Not for measurements related to relative humidity.
! A- `! R4 h& y9 Z2 p, R6 l$ Q- @5 R
* ~- P. A2 B0 _ |
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