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|  DSH 251B5 N* B* V& e' l7 i5 ~
) a5 _1 K4 w+ ]3 e$ t# k
| Measurement accuracy0 o& t+ c9 X: q, W% q6 q- `' z ^$ m# l
| N/A
; }7 d& z q, T | Generality
1 r* B; E' k% E* c# ] |
! y5 p0 V3 p! R# q0 h% F/ x1 Z) X% pStandard(s): Generality No. Year5 f& ]. r* H' G2 J+ c. T
DSH
# T2 k+ m+ @: H- I D251B8 m2 T& r4 x/ G" k% T
20092 T/ h$ ^) K' L; |& K L5 A7 l* M8 l
Category: Various. t9 q5 W" w" j7 Z' N- i, k& Q
Subclause(s): ---: @/ ^* V" P0 l7 l) J+ I/ [
Developed by:% c$ D% C4 _( T) k& c: d6 }. x( W
WG4 – WG1. {8 h7 X5 S; y, l( `! L6 _3 N( Z
Subject: Measurement accuracy Key words:
1 N( b- a% h# u) \* D$ a- Measuring range
. g% N4 Q9 k. M' Z- Accuracy
; a" {7 L) g* L$ f8 E+ T- Instrument! v9 ~! m5 r. Y; L& P) l/ x
Decision confirmed at the 46th
" ~" M7 s9 J$ ]3 m/ k KCTL Plenary Meeting, in 2009! @: l& E9 I, X; B% Y, e7 f
Instrument Accuracy Limits
1 o$ ?9 R) N' i( \1 ?Measurement values stated in a CB Test Report shall be made with instruments with accuracies within% s$ C: p6 L" {8 n: N
the limits stated below. These values apply unless more stringent requirements are given in the
& }& p# s9 P, `: f$ E' wreference standard.
3 z: _; O9 N D9 dParameter Range Instrument accuracy of
0 T C, @" y7 d2 pMeasuring Range
8 l! X% y6 E6 I# x+ b3 HVoltage" B, ~# j \4 S" z. L8 D
- Up to 1000 V up to 1 kHz ± 1,5%
2 r! \5 t; Z6 |7 _5 \, k1kHz up to 5 kHz ± 2%
R3 ~/ o5 V6 V# f- [! J) a5 kHz up to 20 kHz ± 3%; z8 R( E0 B! s7 t" i
20 kHz and above ± 5%
3 ^2 e) J) j; `3 J- x8 `- 1000 V and above dc up to 20 kHz ± 3%" M2 L, W7 S) N) a
20 kHz and above ± 5%, w! t. S( C4 L2 T. R, Q
Current
1 J6 {- u, r. D" E1 y. jUp to 5 A dc up to 60 Hz ± 1,5%, b8 h" a; I5 p8 ]
60 Hz up to 5 kHz ± 2,5%. V% J. B Y* v8 Z. y1 G8 }: p
5 kHz up to 20 kHz ± 3,5%$ T8 d$ N9 o6 O. _
20 kHz and above ± 5%$ h# ?7 _6 G6 j2 @: Y( w, {
5 A and above dc up to 5 KHz ± 2,5%
: d* R7 Z, \1 R! M) N; a3 G5 kHz up to 20 kHz ± 3,5%5 W' g' k+ b" ]+ p8 U2 E
20 kHz and above ± 5%
$ t6 B3 I9 J5 a5 ^2 I0 @1 G' ]8 vLeakage current( {" G) u7 f8 H
- up to 30 mA 50/60 Hz ± 3,5%1 Y8 A' f+ {; [5 H. S% ]
- 30 mA and above 50 Hz - 5 kHz ± 5%1 j$ L3 @1 @& o5 O7 }
Power (50/60 Hz) up to 1 W ± 3%" I! a8 e3 t+ v
1 W up to 3 kW ± 3%; Z O8 E; x2 E
3 kW and above ± 5%
, N0 S$ |4 g5 r4 o* g7 YPower Factor (50/60 Hz) ± 0,05. j6 _# m( H1 H+ P
Frequency up to 10 kHz ± 0,2%
0 C1 |! T) _* m8 \' A H: |Resistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
, ]: w) Y3 m' g4 R6 P- uabove 1 T ± 10%
$ l0 v3 C& y+ j" w+ [' l3 Dfor all other cases ± 3%
) i' T4 S2 ]0 B7 cParameter Range Instrument accuracy of
- g' u# r: ]" _: W8 p8 w' z* jMeasuring Range
" i" S9 C$ ?9 T5 W6 B+ ~Temperature 1,2
' E) l+ J; `7 U- Z; ^0 Ibelow 100° C ± 2°C& G# ^4 H+ W4 D7 D
100° C up to 500° C ± 3%
$ d# X, V4 F1 C# j. v. w* t- 35°C down to – 50°C ± 3°C
; i0 ^( }6 j$ ], A0 lTime 10 ms up to 200 ms ± 5%
# j) K3 \$ m b! y( @9 Q0 t2 _200 ms up to 1 s ± 10 ms
0 @* Z/ W% }5 c- v5 b+ q0 g1 s and above ± 1%% f0 J7 t% N% N/ T
Linear dimensions up to 1 mm ± 0,05 mm" S) g0 `5 d F/ B6 @
1 mm up to 25 mm ± 0,1 mm! q: R! Z( \8 @' @7 q4 b% ?
25 mm and above ± 0,5%* I5 |8 E: |7 J. o
Mass above 10 g and up to 100 g ± 1%
" s( f; q# Q* l9 D1 @100 g up to 5 kg ± 2%2 M' N0 c6 O& R* t4 h' X3 _
5 kg and above ± 5%
! j. Q( Y4 s k5 K- S# w5 YForce for all values ± 6% h( E7 L3 w7 F! R& x9 o( ?
Mechanical energy for all values ± 10%* Y, ]" ?1 {- ]0 g- @1 u. S/ C. P, ^& \: d
Torque ± 10%
* V* L; x& q* g) [3 CAngles ± 1 degree) B; a) g/ A' \. g$ E# v$ y; e
Relative humidity 30% to 95% RH ± 6% RH
" h S8 F# r0 S9 S+ F j5 F. u) nBarometric air pressure ± 10 kPa2 v4 @) q4 r/ E$ `( U
Gas & fluid pressure for static measurement ± 5%
4 D! h7 V/ X5 N1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,
% I+ r; E5 v- M9 V, ]1 O“T” and “ J”, premium grade, are recommended.
c' F( N& R6 g2 Not for measurements related to relative humidity.: n0 p2 n3 F! r, T
: r2 j* C* S7 f; i( @. q
' Q V- w) v7 a |
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