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|  DSH 251B) F3 D1 B0 r% j5 ]2 [. {
* }2 o; y7 S# H! J+ z; {- i% h& X# P
| Measurement accuracy1 A6 e# l9 N! q: K$ S' V! c
| N/A
/ c$ Q& H2 q F; L' p" C8 o$ i | Generality+ H/ u0 B$ h& p: Z
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3 | S {$ r% y2 V: x; `Standard(s): Generality No. Year
" G3 M+ r2 K0 k* |" iDSH
% C, ~! P3 ]( Q q7 o251B X" p! f; L1 Q8 w
20098 w& G) f1 K' X6 D2 p+ ~
Category: Various
: M# N. _/ `3 p# |8 M% q$ O, p# aSubclause(s): ---4 d( {; _% g; o, l5 e
Developed by:
7 ~$ P5 g# i0 aWG4 – WG1
' g" @! ?: `: y2 v. f, P [/ QSubject: Measurement accuracy Key words:0 V7 ?' G2 I' [3 [9 l
- Measuring range
* h, @5 O0 N$ t% A- Accuracy
6 U8 p9 [# N% c% Z* d- N- Instrument
/ U0 P p C u G& wDecision confirmed at the 46th, i+ X2 ^! ~8 M5 x- D) h* |- D
CTL Plenary Meeting, in 2009$ I: g& I) J* V7 C
Instrument Accuracy Limits4 R6 O M) ]( q) w
Measurement values stated in a CB Test Report shall be made with instruments with accuracies within
c& s( j3 ~. C# V; W- fthe limits stated below. These values apply unless more stringent requirements are given in the
% _# w+ H5 A- _2 Preference standard.& |4 `( r# |1 x0 U9 j& [' Z
Parameter Range Instrument accuracy of# z5 C+ x3 d \
Measuring Range
, l& g$ E2 q2 i2 O4 m& k' [Voltage/ |. r v9 O" D* G: d6 Z& A9 H2 z
- Up to 1000 V up to 1 kHz ± 1,5%6 o1 K% s0 u1 b
1kHz up to 5 kHz ± 2%& g" L: P# u' O% e) y
5 kHz up to 20 kHz ± 3%
4 W# N6 S( v' V5 m4 V; g" P20 kHz and above ± 5%3 U# p" X; m0 M3 Z3 B
- 1000 V and above dc up to 20 kHz ± 3%& L0 \5 i, C8 A
20 kHz and above ± 5%' k1 a9 }2 X, \4 \
Current
. a6 {4 C3 H5 e& @' U4 Z9 nUp to 5 A dc up to 60 Hz ± 1,5%
; {* s. \0 D. m/ F0 l: y, O60 Hz up to 5 kHz ± 2,5%: q" g, l' Z0 A4 Q+ B' Y( k5 H
5 kHz up to 20 kHz ± 3,5%; T9 I; m0 p, g. U+ C/ E! n% b6 h7 d
20 kHz and above ± 5%3 ~5 X! s5 L7 i$ j& _0 V% Q
5 A and above dc up to 5 KHz ± 2,5%' R% l0 m! ]! s( {
5 kHz up to 20 kHz ± 3,5%& f% j1 R) t$ n7 C) n( x& q( Y
20 kHz and above ± 5%
K; {: W: T( j2 `, j+ mLeakage current0 n/ F3 t1 E0 `* Z2 o
- up to 30 mA 50/60 Hz ± 3,5%% e$ d3 c' G9 c, ]
- 30 mA and above 50 Hz - 5 kHz ± 5%
1 f! _# ^1 S) O9 H7 m1 `; pPower (50/60 Hz) up to 1 W ± 3%
& `2 K/ e) X( ?. ~" e5 b/ E1 W up to 3 kW ± 3%
c1 `3 [2 V _* @" `3 kW and above ± 5%6 A" g, x Y2 h9 w, }( d
Power Factor (50/60 Hz) ± 0,05$ g. K' v! s1 `" Q0 E1 G, k
Frequency up to 10 kHz ± 0,2%
: ?, W2 Z6 b$ f5 q) XResistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
( K. ^; j) c* ^above 1 T ± 10%
+ B' ?6 A) z4 Afor all other cases ± 3%4 E. Y' w8 j3 U8 F
Parameter Range Instrument accuracy of
6 j' N0 D$ G* @9 ?; wMeasuring Range& X' _( j; I, r
Temperature 1,2
|/ X! g* m) H. B+ C5 p' l# t" q [below 100° C ± 2°C7 o* Y$ Z9 q/ f5 Y3 \2 l% d0 e
100° C up to 500° C ± 3%6 _# H. i0 u: v
- 35°C down to – 50°C ± 3°C: ?9 f: \& `( R3 o3 l+ ^$ h
Time 10 ms up to 200 ms ± 5%
@' Q% f% X7 ?! L: c200 ms up to 1 s ± 10 ms' R* H& ^7 ?/ P7 G- T
1 s and above ± 1%% c' Z( i" Q, M* M) [ \. i
Linear dimensions up to 1 mm ± 0,05 mm
, A A3 \9 Q% I& k( Y2 G6 z1 mm up to 25 mm ± 0,1 mm+ I$ `/ ?, V9 k1 K% W, L
25 mm and above ± 0,5%
2 c( S3 W+ Z$ l- `Mass above 10 g and up to 100 g ± 1%
b. @* I" D( z0 T100 g up to 5 kg ± 2%9 v) c# V0 p9 M5 w
5 kg and above ± 5%
u( \9 S1 ]0 }4 j jForce for all values ± 6%
$ L8 [/ g) A' M9 p8 _/ h- hMechanical energy for all values ± 10%
' f* }9 b" L, i& ]1 i- }$ e' QTorque ± 10%0 I: t6 @( n$ D. w& ]9 j6 E, J
Angles ± 1 degree
( t2 W l. f/ {8 h* Y7 @+ @Relative humidity 30% to 95% RH ± 6% RH
1 s6 H' u. p: J( v* N. i' bBarometric air pressure ± 10 kPa
, q9 A" D' D" A, D5 r( qGas & fluid pressure for static measurement ± 5%8 S0 ?9 Y$ w* V _1 X9 f9 _
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,7 }3 Q$ E W. C+ H+ c6 `: b" V
“T” and “ J”, premium grade, are recommended.
" v8 s7 E4 w# X" N/ Q% i8 R5 q1 J; Y s2 Not for measurements related to relative humidity.
9 x! ]) K/ G& d9 @- v* ]8 t" T, _4 y/ h8 E
' S/ T) P% V' ]
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