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|  DSH 251B7 X, P2 F0 m* o8 Y
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| Measurement accuracy
# \ G- L% G9 C! n | N/A! I# G) s) v. L
| Generality
+ V$ n; O, }9 _, _4 J3 h8 U+ p |
6 A( ]; w9 c W- e$ r) u; K
Standard(s): Generality No. Year
" M0 K2 l# n, B y4 P" U! D4 dDSH0 ~0 g. k9 u) m$ q
251B
O( Y" {- e9 i9 `2009+ s3 q! t L3 ^ N
Category: Various( @2 P/ [; ~+ a6 U" U% ~
Subclause(s): ---
9 A6 ^3 t6 c a# b6 {& Q! {Developed by:. n- Y# F+ l# |5 ]
WG4 – WG16 j. v. c6 }6 z) L3 ]& z
Subject: Measurement accuracy Key words:
- f* w7 d5 \4 R- Measuring range+ g G' {' w1 V) T1 W f* t
- Accuracy
$ b1 e/ H# O! M% f- Instrument
9 u* M' U$ n) O3 G+ }Decision confirmed at the 46th! Z e! o% ~( D* ^$ ^2 J; R0 Q
CTL Plenary Meeting, in 20096 D! ^' s2 Z+ Y6 z
Instrument Accuracy Limits
% V2 W, x0 B* D+ @9 Z! k7 dMeasurement values stated in a CB Test Report shall be made with instruments with accuracies within
# \, l+ X$ z$ W- gthe limits stated below. These values apply unless more stringent requirements are given in the
& R2 h* g* U2 b S0 \5 Sreference standard.
6 N) V/ W) N. j# o6 k8 nParameter Range Instrument accuracy of
% R" L' \2 `- c0 e9 ?( D; nMeasuring Range
" X5 y* t4 ?9 wVoltage8 K1 @( c& G3 g/ Y* J: C
- Up to 1000 V up to 1 kHz ± 1,5%
4 m- E+ Z# q5 h) y# r1kHz up to 5 kHz ± 2%- {# G% ^4 R u4 B9 m7 l" {
5 kHz up to 20 kHz ± 3%
/ L! v$ h6 f8 H0 X2 R; `20 kHz and above ± 5%$ W* V$ t6 e) {/ q
- 1000 V and above dc up to 20 kHz ± 3%
; `% p3 t f2 }5 i* c4 j20 kHz and above ± 5%/ M0 k5 J- J# d* n1 ]
Current. L7 G# A1 K7 F- B5 m8 N- ]% w, P) l
Up to 5 A dc up to 60 Hz ± 1,5%7 ^4 `+ R% a& O' R3 T9 a [0 g
60 Hz up to 5 kHz ± 2,5%0 c3 \ V( v5 m& L* K4 j, r& r
5 kHz up to 20 kHz ± 3,5%- o% `0 R- ^3 _8 F9 d& V
20 kHz and above ± 5%" f6 J+ O. P% x0 j A
5 A and above dc up to 5 KHz ± 2,5%
: X- ^. ~$ ~: g7 m. z6 @5 kHz up to 20 kHz ± 3,5%
- f+ `! d$ N' K% C+ n1 n20 kHz and above ± 5%2 h- j# U7 }- K5 k- P% s, F8 y
Leakage current
1 |$ x4 j6 q' J1 ?9 p- up to 30 mA 50/60 Hz ± 3,5%$ Q3 r/ c- u% z4 w3 `, _+ Z
- 30 mA and above 50 Hz - 5 kHz ± 5%
& f& l& A+ R; `0 M8 xPower (50/60 Hz) up to 1 W ± 3%) \/ ?( V, E( X) {$ y
1 W up to 3 kW ± 3%
5 n+ W& }4 C; m5 D% P3 kW and above ± 5%. l: ?! I/ Y0 _1 t9 c) O4 `& \
Power Factor (50/60 Hz) ± 0,057 v# s a2 U0 N3 V& s, h2 @- G! o
Frequency up to 10 kHz ± 0,2%
, f. ^9 y* G0 o) E* ^- DResistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
4 y# ^- h4 W( @- ?1 q) W* H2 e0 nabove 1 T ± 10%
2 h" |. S" _- r( bfor all other cases ± 3%( o6 E7 F1 B4 F4 R
Parameter Range Instrument accuracy of9 T* H; Z2 P2 C
Measuring Range- B: A" w/ {! n% {; Q( n
Temperature 1,2
7 a8 @, W) ?1 e4 l- Ibelow 100° C ± 2°C9 @5 Z( ~$ W6 Y
100° C up to 500° C ± 3%+ b7 A+ ~9 c% w1 O2 S
- 35°C down to – 50°C ± 3°C; ^, q% J$ q- y+ {& |
Time 10 ms up to 200 ms ± 5%
3 z. J7 ~. T6 r4 U3 H: T200 ms up to 1 s ± 10 ms
% I+ g4 W8 {0 y/ ]1 s and above ± 1%2 P" p6 g4 B! F( x; B L
Linear dimensions up to 1 mm ± 0,05 mm2 p' R5 {8 n0 v- a) S
1 mm up to 25 mm ± 0,1 mm6 ]4 j) C) k3 s' Z# K. d
25 mm and above ± 0,5%+ R+ i m2 L* b
Mass above 10 g and up to 100 g ± 1%
' `( b4 R/ x1 R; F100 g up to 5 kg ± 2%
" }$ U% v% S4 {/ B5 kg and above ± 5%8 |% b3 J9 V% I e8 m1 z% p# ^$ q
Force for all values ± 6%
$ a n# H# X$ x3 J; p( @0 GMechanical energy for all values ± 10%0 j. R: @2 W# I' e6 \- R5 c
Torque ± 10%
6 F# N% I, V! c! TAngles ± 1 degree
/ b1 B( Q8 \" L! O$ ^5 MRelative humidity 30% to 95% RH ± 6% RH
9 [" Z8 N4 G+ @- `; r9 cBarometric air pressure ± 10 kPa. V$ ~" s9 `6 j) Z3 _. [
Gas & fluid pressure for static measurement ± 5%! f1 J O. e. m( O) P& P, J9 p6 Q% R
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,
) P" j' S/ I5 l: p& `“T” and “ J”, premium grade, are recommended.
1 D3 U5 W _/ Q' g1 x2 `2 Not for measurements related to relative humidity.6 S D* z% k8 }" x1 a0 U
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