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|  DSH 251B6 o* @5 R, f* I3 Q6 v
/ ?4 b' D/ z5 A+ T* U7 t( F
| Measurement accuracy. ^/ M0 Y! N' E
| N/A6 G0 j% [) o1 ~& N4 o R4 b
| Generality7 e8 G |+ Z" S, f3 B- a! M
|
- n; ]# y/ c' U& d3 X6 K* x( m }Standard(s): Generality No. Year
/ j1 \$ T5 `; b/ A. ^, M. X+ i2 TDSH
" Z9 m) u1 {' N# _251B* k) p; g" O" H
2009
4 `/ ]- F9 ~) u! q, w/ a- }Category: Various( |+ u% t1 ?- Z5 Y) h) K
Subclause(s): ---
8 T% y# w1 C$ M1 n# H; LDeveloped by:
& K( k+ Y/ T- ]/ l7 a, {WG4 – WG1- Z# V' G% K- K& E
Subject: Measurement accuracy Key words:
4 x0 @* I; T" ]3 I2 n! O! `- Measuring range; B$ `$ B& y( w9 D2 r7 _/ i# A
- Accuracy
3 _* [+ p- p* }- j- z; E- Instrument
$ i! ?' ^6 ~4 F: A( f- q' cDecision confirmed at the 46th
; i$ e6 C& R, _CTL Plenary Meeting, in 20090 H7 f: r/ B: r' I2 v5 o
Instrument Accuracy Limits
8 r" X$ g$ Y( j) FMeasurement values stated in a CB Test Report shall be made with instruments with accuracies within; F4 E2 T7 [* W. D, ]
the limits stated below. These values apply unless more stringent requirements are given in the- b- q' ]9 w( ^3 W: e
reference standard.
" T0 C! n8 D7 a0 JParameter Range Instrument accuracy of
8 @6 D4 H* t$ \$ g+ gMeasuring Range
3 ~2 s; ^4 l% _. l) [+ rVoltage9 R. w$ a& W `/ o6 ~
- Up to 1000 V up to 1 kHz ± 1,5%
2 D' R. v6 D, S, G, A1kHz up to 5 kHz ± 2%
- n' P4 j% i! Q$ N5 kHz up to 20 kHz ± 3%2 o0 A3 E0 V* X
20 kHz and above ± 5%
# s8 j _& f/ J) Z$ u# C' e5 W- 1000 V and above dc up to 20 kHz ± 3%, R- C6 i! L$ @
20 kHz and above ± 5%" k2 d6 s8 h6 u9 q
Current1 R; A: a, n+ R9 O$ M0 q) E! J/ l
Up to 5 A dc up to 60 Hz ± 1,5%
' a z$ u3 B/ h: S! H% ~& _8 f0 z60 Hz up to 5 kHz ± 2,5%
- ~+ P' J+ G1 [4 ]5 kHz up to 20 kHz ± 3,5%# c3 z$ h+ q8 O, d0 e2 }
20 kHz and above ± 5%
$ B: \) O3 T1 g( `5 A and above dc up to 5 KHz ± 2,5%# g5 Y9 N' f- Q5 j# b F' J$ Y
5 kHz up to 20 kHz ± 3,5%$ k2 I" l1 m7 [' ?
20 kHz and above ± 5%) }% o" N+ s' o6 |
Leakage current
l- ~& Y' d- e! T4 F- up to 30 mA 50/60 Hz ± 3,5%
" K' a& A* W4 U9 M7 |, W- 30 mA and above 50 Hz - 5 kHz ± 5%6 a: ` m, a! a% q; O) W* C5 C
Power (50/60 Hz) up to 1 W ± 3%7 I$ T3 Z" i# e/ s
1 W up to 3 kW ± 3%7 G) A6 ]2 Q9 q1 v1 [0 |
3 kW and above ± 5%- u1 J1 J2 ?0 ], o! b) p
Power Factor (50/60 Hz) ± 0,05: _" s. _$ I2 ^7 ~9 c0 @
Frequency up to 10 kHz ± 0,2%' Z2 \0 B3 R% U% _1 A& m2 e
Resistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
5 {, [! ` `9 i5 Yabove 1 T ± 10%
) C3 S: ]8 Q9 M4 p7 c6 ~for all other cases ± 3%% @" i/ I* t, q
Parameter Range Instrument accuracy of7 ^: P0 B3 T4 k4 r, \% i; X' H
Measuring Range
3 \, G/ k( c+ C- K9 F) E+ gTemperature 1,2
: b8 i) f6 ^( g1 X' Ibelow 100° C ± 2°C
# o# r3 {6 A" ~ f4 e+ @100° C up to 500° C ± 3%( h5 Z% w/ F& @4 C7 H
- 35°C down to – 50°C ± 3°C3 p- p3 {) x# g
Time 10 ms up to 200 ms ± 5%
8 I ]3 t! ~5 a) O E1 n* U$ o$ g200 ms up to 1 s ± 10 ms2 |$ j, F0 k% U/ v; J1 T
1 s and above ± 1%
" t/ Y p8 _' S. d BLinear dimensions up to 1 mm ± 0,05 mm V0 A# A: D% U$ u# w$ f% W, h* L( D
1 mm up to 25 mm ± 0,1 mm
! `( }/ P- E* E- D4 X K; a25 mm and above ± 0,5%& g; g6 Y u- W( R+ D! q$ e; D% x' B3 W
Mass above 10 g and up to 100 g ± 1%
, ?/ `' O; w1 r* O3 X+ O100 g up to 5 kg ± 2%
: I: |5 P$ c2 [. g. H5 kg and above ± 5%+ p# f8 A4 V* a' @% \
Force for all values ± 6%( _5 L% v6 D4 j: V& \2 ?0 s; w& N: ?
Mechanical energy for all values ± 10%
$ ? ?9 Q) P) P0 I. U4 jTorque ± 10%" l8 V+ E8 a S' @5 D
Angles ± 1 degree
/ X8 \; [6 H! `% Q& X+ p! e, H: HRelative humidity 30% to 95% RH ± 6% RH
$ V6 c) M- v: z" {' D% o b6 S0 ]Barometric air pressure ± 10 kPa+ e" z- O, b5 W0 G9 C' |( e4 k
Gas & fluid pressure for static measurement ± 5%
3 l5 L, H9 v) l6 _1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,& x# y" Q, E$ f
“T” and “ J”, premium grade, are recommended.
+ s( u) o& r% p7 U+ _2 _2 Not for measurements related to relative humidity.
+ }3 A" h8 a. f! _* z2 [" W; u3 {) I3 W
- v' Q* p% B% g8 x& |# M0 h |
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