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|  DSH 251B
- f0 w0 n: W2 c- ^
* N8 m8 l" c$ b L' L3 a; s& G/ V | Measurement accuracy6 X3 Y" s6 |, H( n* V3 z
| N/A
6 h1 F' f3 F! |$ [! R a5 A% ^ H2 n | Generality% Z( b: F) T+ r6 Q/ Q
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9 O. s1 J6 v( y5 {$ L( ~% P- PStandard(s): Generality No. Year
7 z2 M+ l- V4 v D# D7 P. ]DSH# Y$ w6 o& g/ N# x
251B
, b2 z& b' u' e1 [6 ]2009) O7 v) I: u' D: c1 j
Category: Various
& F- o2 Z% e+ ~4 F; x7 |Subclause(s): ---
& X/ a" U' t7 ~" i0 s; E" h( d7 K5 gDeveloped by:
2 v7 X' V9 z2 F. N- uWG4 – WG19 s; `' X8 V' \$ m P
Subject: Measurement accuracy Key words:
: k: t( M. M' r, H- Measuring range
3 d0 D+ h3 A; \% C& q& U- Accuracy. d" v2 R/ C( h$ K5 h
- Instrument
( W, _; ~: t8 B4 @Decision confirmed at the 46th
7 }# l7 X6 ]" H* P# pCTL Plenary Meeting, in 2009
# R$ n5 [. x$ I y/ d1 V, ^& h7 V% F9 CInstrument Accuracy Limits
! R( \: R6 k; L/ A2 M' GMeasurement values stated in a CB Test Report shall be made with instruments with accuracies within
3 i7 N1 q1 O1 |6 k: ?% r6 Rthe limits stated below. These values apply unless more stringent requirements are given in the, a, Z1 p% K# x* o/ B7 a
reference standard.
8 N) t' x& R7 g; X k! t6 @0 {Parameter Range Instrument accuracy of
- U" T4 D; R wMeasuring Range
' K* e2 I' @9 E! n4 y0 vVoltage' A1 u3 w! \6 u4 Y
- Up to 1000 V up to 1 kHz ± 1,5%
+ e4 j, M- N; }) P; C! k1kHz up to 5 kHz ± 2%
5 \7 O" {& `* z5 kHz up to 20 kHz ± 3%$ S1 {* y: [7 p; J+ i
20 kHz and above ± 5%6 K" F% C' I) L7 j4 `
- 1000 V and above dc up to 20 kHz ± 3%& n0 c. P9 U3 \) H4 d
20 kHz and above ± 5%. R+ \$ O( B% X' S1 Y `
Current
6 Y+ a: Y7 Q; B( LUp to 5 A dc up to 60 Hz ± 1,5%( w: M- d6 a: T8 {; T# g' _" K8 \7 d
60 Hz up to 5 kHz ± 2,5%
4 N1 S% F) D: {" q" P$ a4 ~% \5 kHz up to 20 kHz ± 3,5%9 ]1 A, ?& Y' ^ ?( y# J
20 kHz and above ± 5%9 h5 \- b! s. A6 |8 k- t3 n
5 A and above dc up to 5 KHz ± 2,5%
) M4 @, ^8 ]! X% `3 [& z) M5 kHz up to 20 kHz ± 3,5%" W2 K }- M% l3 P: m1 E/ Z
20 kHz and above ± 5%
. }' w8 G9 ]- d0 vLeakage current/ @" Z. ^$ t! ~/ Y' f3 u/ s2 V
- up to 30 mA 50/60 Hz ± 3,5%
' d Z* v" p# H8 P, T( `- 30 mA and above 50 Hz - 5 kHz ± 5%
) g: S) w- O6 V% EPower (50/60 Hz) up to 1 W ± 3%, [: L, u' d* C# ~9 ` z9 ]5 E! k& y: L
1 W up to 3 kW ± 3%/ T# a# s/ J; [
3 kW and above ± 5%& S# I$ ~0 S& `! x; F" ^
Power Factor (50/60 Hz) ± 0,05
( A8 I I: p' f' NFrequency up to 10 kHz ± 0,2%3 p# x$ ^1 e2 ^# @7 d5 @
Resistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
) E8 Q, G: g7 @: z- habove 1 T ± 10%
5 \4 d1 [9 n0 v, Y+ L# efor all other cases ± 3%
1 z1 U" `' ]% p) A! i# A/ vParameter Range Instrument accuracy of
" z& I3 {% `& nMeasuring Range
% `( [7 a; V" {$ d( E8 L- C0 W* ^Temperature 1,2, m, o/ B# n* B) m7 l
below 100° C ± 2°C
0 k/ `/ i. I) P. q; h100° C up to 500° C ± 3%
, V6 S6 S, B' s9 k4 B% v6 U/ Z9 M- 35°C down to – 50°C ± 3°C! \! ~# K. X z! A% n, |
Time 10 ms up to 200 ms ± 5%# e* s/ u3 A- O1 x% o$ _# i: D! {
200 ms up to 1 s ± 10 ms7 l, }, E% N6 l) n" h! U, o
1 s and above ± 1%
/ V1 Z4 k& V8 `9 S. d3 _3 MLinear dimensions up to 1 mm ± 0,05 mm
* k' h2 v" X/ m9 B( b0 p& Q5 }1 mm up to 25 mm ± 0,1 mm0 y1 A# s$ T$ F8 k% B
25 mm and above ± 0,5%
! _4 m- b$ ^4 `0 Q4 K# vMass above 10 g and up to 100 g ± 1%
& y5 Y9 N" }/ J( R% p4 T100 g up to 5 kg ± 2%4 C0 |* q0 x) L) e
5 kg and above ± 5%! E, M i, ~( W b
Force for all values ± 6%
3 G" k- x% C' Q7 M ^Mechanical energy for all values ± 10%* D" a8 i6 p, A" Y5 _
Torque ± 10%* D/ b4 ~" c* d8 m% |/ H7 j. Y8 g; z
Angles ± 1 degree5 }9 |: ?2 h! q8 W- Z8 D7 o0 z
Relative humidity 30% to 95% RH ± 6% RH
4 i. z1 Z/ a( N0 C; L! O+ cBarometric air pressure ± 10 kPa0 t3 f, W0 V: P, ?
Gas & fluid pressure for static measurement ± 5%( R% o9 m/ k3 h' z4 c# `
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,
/ |+ m5 H- S( c“T” and “ J”, premium grade, are recommended.) H6 ~7 s! r5 W d9 }5 h; y9 X/ f# K
2 Not for measurements related to relative humidity.
9 B# t2 L7 G* U* x! [2 }& L8 ?. N+ S" a: W6 A
0 P' q% }. q8 G. S
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