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|  DSH 251B% J6 C( T9 N( I1 W
& U$ z! G) A! C' A8 \ | Measurement accuracy
" U! w; X/ E0 D0 i" C | N/A* @% e! V+ }+ n2 Q6 |* H1 \, l; p1 b
| Generality5 f6 T) d. u" H" V
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+ b/ s3 s1 l+ I/ G
Standard(s): Generality No. Year
% a4 ?3 \0 k! [9 R: Z: fDSH
, x5 {0 u/ Z5 E2 g- X4 j$ s251B
. Q0 y8 O: c9 d2009
4 X$ i% O$ G# [% cCategory: Various
6 Q& z# j3 r/ NSubclause(s): ---8 s( U1 ^9 y# u+ O3 H$ X
Developed by:
6 z1 ?7 q% Q+ G! L, j3 A8 cWG4 – WG11 {- }9 g5 G% F8 ?
Subject: Measurement accuracy Key words:
/ P$ `( |, W. d- Measuring range
) y) {0 E' l# Y+ { M8 o& f* c# s+ S- Accuracy
, z0 x4 n1 c+ S; G2 B( j& A- Instrument# ^: \& ]- |6 K! T! W( M( E
Decision confirmed at the 46th) c% O0 v! e. v5 o
CTL Plenary Meeting, in 2009
3 V# y' _2 F p3 s9 g% GInstrument Accuracy Limits4 H5 _; U; _/ |
Measurement values stated in a CB Test Report shall be made with instruments with accuracies within
" G/ S3 \9 W) ~/ ]" Ethe limits stated below. These values apply unless more stringent requirements are given in the
3 {5 H$ K# l0 T- r, z' ~$ D. yreference standard.6 o2 v1 D3 A$ E8 _$ z; L
Parameter Range Instrument accuracy of5 n- ~; [) K8 t2 g5 M3 W
Measuring Range
0 H: o1 s* a: Z. d3 d. yVoltage5 f& T; ]' x D
- Up to 1000 V up to 1 kHz ± 1,5%5 ^7 y! e2 b _7 t+ x& A
1kHz up to 5 kHz ± 2%
/ r, x8 D* s# h) x5 kHz up to 20 kHz ± 3%
. J' e- I Z/ B' r. R! ]20 kHz and above ± 5%
6 E! `4 r8 @0 V" _/ x7 m. N* x- 1000 V and above dc up to 20 kHz ± 3%
) ]3 X% H% k: K0 F) M, F; N20 kHz and above ± 5%
' E% F6 w2 e4 K. ?) d5 i+ ^+ L. \. dCurrent
; @6 w! [* C0 c6 p$ j' i# }& d+ zUp to 5 A dc up to 60 Hz ± 1,5%1 l! F p0 Y y9 M; O& {
60 Hz up to 5 kHz ± 2,5%+ R& P- O, K) e: O K- ?
5 kHz up to 20 kHz ± 3,5%
5 |, }- m' p/ W$ ^5 J20 kHz and above ± 5%
) j; Y: W% ~; }+ S/ c5 A and above dc up to 5 KHz ± 2,5%! x+ }% x% \. P" l2 ~5 o
5 kHz up to 20 kHz ± 3,5%
x9 y$ [2 H" n6 f20 kHz and above ± 5%9 B" r, g( _4 _0 O, L9 `5 g
Leakage current+ V$ _5 Q- k [- @ f# i8 z
- up to 30 mA 50/60 Hz ± 3,5%9 ~7 j( f- o/ ]8 Z1 q9 E6 T
- 30 mA and above 50 Hz - 5 kHz ± 5% ?7 Q* h. S8 m
Power (50/60 Hz) up to 1 W ± 3%! Q& H' \6 N0 V* {5 w
1 W up to 3 kW ± 3%
3 P% U* O/ [, ]8 h& D3 kW and above ± 5%
( ~% P: S5 k/ r) s* G4 l2 FPower Factor (50/60 Hz) ± 0,05
* S* p) [) q. Z5 S; HFrequency up to 10 kHz ± 0,2%
( j: n! u2 ?! N u* l* x) RResistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
/ l% s! q9 i" ~; Fabove 1 T ± 10%
4 w. b) k( S: Qfor all other cases ± 3%( _) D# u. A C6 W3 g
Parameter Range Instrument accuracy of
' C5 e4 h* |3 _, [+ c5 YMeasuring Range
) \2 W6 J3 n8 {Temperature 1,2
& b& c% g9 k! u2 cbelow 100° C ± 2°C- K- d# q5 m' D- D6 W$ _; q
100° C up to 500° C ± 3%
. b: u% i- ^' |1 I- 35°C down to – 50°C ± 3°C
% q4 r! O$ ?4 H0 nTime 10 ms up to 200 ms ± 5%7 Q) E/ w- i% B4 L. Q- g# D; z
200 ms up to 1 s ± 10 ms
0 [2 \0 l+ L- u, z- [( i1 s and above ± 1%- i% |# t) T" F4 E6 W3 W) n
Linear dimensions up to 1 mm ± 0,05 mm
, A: z* P9 D& _- [' b1 mm up to 25 mm ± 0,1 mm
1 ~" o! i4 S( Z9 p+ P) |25 mm and above ± 0,5%; e6 w0 c j2 N2 |" |
Mass above 10 g and up to 100 g ± 1%
5 ~& U" d: V) ]* a100 g up to 5 kg ± 2%
! e4 B- v4 H* U4 b/ {# u5 kg and above ± 5%
( S' T6 k' v% a5 E/ ^Force for all values ± 6%
5 A }# y" e% oMechanical energy for all values ± 10%
1 w' v: _9 D! Z3 @: ]Torque ± 10%
8 w3 _' |/ a C0 Q: @' _$ J1 VAngles ± 1 degree+ \8 b& T1 C! K% G: g! f( s5 I
Relative humidity 30% to 95% RH ± 6% RH! e2 v5 r. D, J" Y) r7 r
Barometric air pressure ± 10 kPa
0 ~2 x( C8 o/ l) i0 i+ BGas & fluid pressure for static measurement ± 5%% n( Q& A/ R+ p! v/ {
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,
& g9 S2 N e& ^% O* j" k' a, k" l$ _“T” and “ J”, premium grade, are recommended.
0 M, C( X( A* p! D; x0 d5 V% ]$ q2 Not for measurements related to relative humidity.
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