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|  DSH 251B) m) B$ F) F1 j
- @' Z5 |/ v: {4 c" E, T0 O | Measurement accuracy& d: C) I: v- W0 {- D5 W6 u: V
| N/A
4 H7 t$ g L O6 m5 Y | Generality) ]8 F2 C4 z8 \0 T
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3 v# U8 ?' O% V4 @ O
Standard(s): Generality No. Year- ~. x7 C% L1 o/ u' i+ K
DSH+ O- Y; g/ i, k) L
251B+ e; e! a0 W! S5 b Z: Q4 _
2009
0 Z( T- _1 U0 ^$ T, u: e; H2 XCategory: Various& c* K: F1 r- x
Subclause(s): ---
( }- z t6 E4 P& c+ n9 @& N! g( UDeveloped by:+ L7 K0 P: J: ?
WG4 – WG1
- ]( O) }( F! {8 nSubject: Measurement accuracy Key words:
. _( Q- A! G$ K* r# b- Measuring range
# n9 C7 Q/ R8 H9 K. l! Z0 Z- Accuracy0 C) _/ e! I2 T, @3 \& i
- Instrument% n& g$ u7 j0 }$ B# |/ F
Decision confirmed at the 46th: m4 `) ^6 a5 ^
CTL Plenary Meeting, in 2009
$ r0 n5 n, j7 f( H# QInstrument Accuracy Limits
0 T- c1 i7 J' L' uMeasurement values stated in a CB Test Report shall be made with instruments with accuracies within* A2 @! _1 H" A6 B# K
the limits stated below. These values apply unless more stringent requirements are given in the) S6 C% V+ U8 E8 S3 M/ n% Z- S7 Q
reference standard.
3 L8 x/ Y( f2 O, E/ NParameter Range Instrument accuracy of
8 m# X7 y" u7 m3 m Q4 S/ @Measuring Range e4 g2 y! E" h
Voltage
7 x- @ p+ n! F& d- Up to 1000 V up to 1 kHz ± 1,5%
8 ]; D8 t3 c: P( \8 J4 B$ [4 Q1kHz up to 5 kHz ± 2%
3 c' W9 S4 N& @5 kHz up to 20 kHz ± 3%
) ^0 J: D' Y3 p% J2 @3 f20 kHz and above ± 5%
; c% }6 _4 D7 X W' w- 1000 V and above dc up to 20 kHz ± 3%2 p9 ]# d) R) @6 q% ?9 P, l* @
20 kHz and above ± 5%
& D! b% A0 @3 H+ O" n7 QCurrent+ o, L# g$ d6 M% q7 L
Up to 5 A dc up to 60 Hz ± 1,5%
& p8 D1 ?9 X7 b60 Hz up to 5 kHz ± 2,5%+ |; g; S( y: A' h7 a, m$ ^* n
5 kHz up to 20 kHz ± 3,5%6 u& s& W- P, P" ~2 r; L5 h
20 kHz and above ± 5%8 N! W0 Y* z+ R4 e
5 A and above dc up to 5 KHz ± 2,5%' H( s3 m0 t5 A5 p3 t$ |' a' I
5 kHz up to 20 kHz ± 3,5%5 V% X/ ^6 C) O
20 kHz and above ± 5%
' q, m, w$ D! s" X: KLeakage current: N# d3 ^2 l( j4 X# E
- up to 30 mA 50/60 Hz ± 3,5%
6 r9 Y" ^1 ~4 c2 o- 30 mA and above 50 Hz - 5 kHz ± 5%
# ^9 z1 B9 T5 R! |$ QPower (50/60 Hz) up to 1 W ± 3%
5 L/ }* Y( ?& G7 G' B/ x) c- V3 q2 j1 W up to 3 kW ± 3%
) o) }# Q, O, ?; _6 g$ z( @3 kW and above ± 5%; }& O( G# O- E
Power Factor (50/60 Hz) ± 0,05
" k; f$ `) b/ v2 }6 Y! B9 j# |Frequency up to 10 kHz ± 0,2%; ]' J" P/ p/ v% O+ e' }
Resistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
3 `/ A. g1 |8 [+ Z- w5 Kabove 1 T ± 10%
n5 K* ^8 ~8 c7 e1 ?for all other cases ± 3%: p# E/ ^, k. H9 K( N( ^4 h" {* w% k
Parameter Range Instrument accuracy of. r) x7 D; w) ~, \) ~, d
Measuring Range3 K" z* q5 m; b4 v
Temperature 1,2
# z/ n a+ C0 Wbelow 100° C ± 2°C
- ^: R# r: x& v1 ?3 s/ I100° C up to 500° C ± 3%! p8 }- `2 g, e" I; D( `
- 35°C down to – 50°C ± 3°C
/ X8 }9 f9 { K4 j! E" V. I6 R% OTime 10 ms up to 200 ms ± 5%
2 O" A$ {6 c" Z5 y; g200 ms up to 1 s ± 10 ms
3 {) j1 c4 p8 E2 _0 K+ i, U' @0 Z/ B1 s and above ± 1%
* u' Z4 ?$ ?7 x( N( e( cLinear dimensions up to 1 mm ± 0,05 mm
& q1 z' b9 S5 n. L7 Z1 mm up to 25 mm ± 0,1 mm
5 G2 a' i3 a9 s3 ?( c$ S25 mm and above ± 0,5%% o4 E) p, P' j, h7 Q
Mass above 10 g and up to 100 g ± 1%0 m# @9 s8 Q7 k( L" l2 D
100 g up to 5 kg ± 2%
8 k+ E" Q, B- f/ E; p5 kg and above ± 5%
. O* [+ P, o9 ?0 K/ J* b9 W# Q/ YForce for all values ± 6%3 C6 b& }' R% q1 ~
Mechanical energy for all values ± 10%
3 o5 B: w9 f$ {0 WTorque ± 10%
# N0 K2 r# W- l$ o, \8 I0 BAngles ± 1 degree9 q: f( {$ x4 ~/ o) M
Relative humidity 30% to 95% RH ± 6% RH
0 u* M P- s8 z; O/ E" D9 `Barometric air pressure ± 10 kPa
; W4 ]0 M+ b5 E" y( ~7 ~Gas & fluid pressure for static measurement ± 5%
: h3 S$ F% e G8 w& ]# R1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,/ R1 B2 N% z* w, N- V, U
“T” and “ J”, premium grade, are recommended.
( T. J- ~( C1 {$ p6 V6 v2 Not for measurements related to relative humidity.
4 z/ D" ^- z/ {: P3 l% q" e- ^+ n/ m% o* X5 g
& b% Q, Q% o; J" r, ?
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