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|  DSH 251B
3 J4 H& a+ H* L/ \3 r8 O
' X9 d* m, ?9 m! z" k/ l# X | Measurement accuracy7 a# `& n- l1 [" A! M
| N/A
4 M, p) E3 W! E& a6 X! v$ Z, ` | Generality
; C9 S0 Q) V# w. f% g: I: _ |
5 u% p8 ^7 _2 o: z% i IStandard(s): Generality No. Year& B4 {/ h5 ]6 `8 Z ^4 m
DSH
/ m+ U: j7 m* R251B
8 ~1 O0 H& D2 @1 F2009
$ }, W- z& M8 C4 [Category: Various
4 d$ a. q; `6 v. ~3 F" [6 ~) G1 dSubclause(s): ---
5 E+ v0 n" K5 X1 U d4 I! gDeveloped by:5 s& k+ ^% H! d$ g9 n* Z- D/ S
WG4 – WG14 n- J' p3 Z6 p0 n
Subject: Measurement accuracy Key words:
e+ X, Y% m; D- Measuring range
. [) F! I& ^$ _+ x- Accuracy) \0 L! i, g8 \$ s
- Instrument$ k/ }' x4 m+ f7 I" m/ w
Decision confirmed at the 46th' S; e" \1 X9 U" Q7 i
CTL Plenary Meeting, in 2009
$ n& c `+ y2 {Instrument Accuracy Limits
/ J- W+ O1 J+ {Measurement values stated in a CB Test Report shall be made with instruments with accuracies within
/ N. H2 E. y+ ^# ~% c* V% x' W5 V6 ~the limits stated below. These values apply unless more stringent requirements are given in the' d8 r' t U9 `
reference standard.
9 @: J- l" T. [* p9 f. wParameter Range Instrument accuracy of5 b3 K& J- O/ E3 e* z5 [9 U$ z
Measuring Range
6 }% \1 O5 _ _9 ]1 V: r" }& YVoltage" L* ] I. r. I8 e
- Up to 1000 V up to 1 kHz ± 1,5%
7 _6 L* K* C/ h" U2 ^: N1kHz up to 5 kHz ± 2%1 J7 }6 w8 ^; b7 |! G) I
5 kHz up to 20 kHz ± 3%9 b- a) _6 [. h3 F/ y/ p" D1 T- b: C5 {
20 kHz and above ± 5%
" q. r6 J9 G1 d& i) R3 g- 1000 V and above dc up to 20 kHz ± 3%+ T. u( L- m! |* `7 \* ^( O
20 kHz and above ± 5%
( G' Q' X: A, A; [7 c7 j3 g& LCurrent
+ ]9 e. _6 {6 M; h. vUp to 5 A dc up to 60 Hz ± 1,5%
1 s, ? c1 |3 s$ o60 Hz up to 5 kHz ± 2,5%- R) J: o. L! V" }
5 kHz up to 20 kHz ± 3,5%
5 y/ Q! X1 A) I6 d20 kHz and above ± 5%9 J X9 ]1 R+ Y0 t8 |6 t# D
5 A and above dc up to 5 KHz ± 2,5%1 g( r; b+ H& H( c- s, Q
5 kHz up to 20 kHz ± 3,5%1 O7 _3 r( ?' W2 l. X) w, f2 g
20 kHz and above ± 5%
& k% d4 o. q a+ N, T. M& mLeakage current. @3 h- j7 O) F: ^ J$ P
- up to 30 mA 50/60 Hz ± 3,5%
5 ~" I" _/ H I7 [- 30 mA and above 50 Hz - 5 kHz ± 5%
`% J- s: D+ K; mPower (50/60 Hz) up to 1 W ± 3%. E' b; O: T( M
1 W up to 3 kW ± 3%* ]$ H( I0 M4 P4 ? P3 ]
3 kW and above ± 5%* G% w6 @- m# R+ E8 p4 J
Power Factor (50/60 Hz) ± 0,05
# v4 D7 N2 l) b% G f7 c. t) EFrequency up to 10 kHz ± 0,2%
/ K, D8 {) G F: T2 ?% FResistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
+ j6 t. |, i# m& j, I" I" H' pabove 1 T ± 10%
4 \9 p# }" j5 pfor all other cases ± 3%
; t1 A( e7 E/ V3 P7 LParameter Range Instrument accuracy of
8 n( n1 s7 L* P0 Y5 M0 i7 UMeasuring Range
$ M7 k4 ?! n: {Temperature 1,2, Q a3 o& }/ f8 P9 |5 C
below 100° C ± 2°C
6 f& o! b$ {+ c2 x: k) c, {- r# T100° C up to 500° C ± 3%
, ~% S! }/ U- a) ~0 _- 35°C down to – 50°C ± 3°C' ~4 B3 Y$ c; D1 S" s& T
Time 10 ms up to 200 ms ± 5%
* U# l! c7 D) F z200 ms up to 1 s ± 10 ms
- D/ d/ S. `' s% u0 y( r1 s and above ± 1%+ M, Y( F" J. P
Linear dimensions up to 1 mm ± 0,05 mm+ \1 [" m8 K3 `5 j7 b
1 mm up to 25 mm ± 0,1 mm
) B5 E8 i- Z6 u( S- @- R! @25 mm and above ± 0,5%3 T4 N0 q9 J6 u2 J. p! V
Mass above 10 g and up to 100 g ± 1%
0 a: n/ J6 f8 }: w100 g up to 5 kg ± 2%+ o8 n1 l, q+ P. [4 s+ e2 \1 f
5 kg and above ± 5%' A' ]$ j* R \, d6 ^4 {/ q2 W, j
Force for all values ± 6%
8 S' a: I9 f5 J9 zMechanical energy for all values ± 10%' w3 s: Y9 c+ ~; ^
Torque ± 10%
d( g6 x8 U# J8 H1 F/ Y( aAngles ± 1 degree
$ ?- @- I* L! o4 YRelative humidity 30% to 95% RH ± 6% RH
6 L! z& N" n* H3 H" m9 iBarometric air pressure ± 10 kPa: I5 J: L9 Z6 q% u$ e: Z
Gas & fluid pressure for static measurement ± 5%
8 T/ F; l S% w1 C4 K1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,( }4 E1 K; u" ~) j1 [
“T” and “ J”, premium grade, are recommended." V: p- F$ |& f% K; A* A* s5 F4 U* k
2 Not for measurements related to relative humidity.* |+ q9 M. v, w
4 Q' T4 j0 f( O( M9 D
6 x' }7 C9 f, n& Z' U. J" } |
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