; G4 z" {. ?# x: R' GStandard(s): Generality No. Year 4 M! e* |# X$ ]- _. S ?/ d* ODSH $ r6 F# X6 t/ s. r6 K251B2 ~0 u0 \) Z# O$ p0 d# L
2009 ( `4 j# `7 g9 }/ P% H" ^; i6 o+ q% WCategory: Various , r: H/ ?4 T) B0 a% gSubclause(s): ---7 z) e) t* s$ `0 J$ A: }2 W6 y
Developed by: " V! `/ w$ E" L: A; }- o0 uWG4 – WG1' h: q+ d3 r! H. l T! U. D
Subject: Measurement accuracy Key words:4 k" |& F e& w4 o' Q
- Measuring range ; s* t9 c. E4 Q! V" a- t% I1 k- Accuracy v+ j! ?' F, h
- Instrument 1 }& N8 s8 t5 ^: @9 p( d. t- Z' [: E3 VDecision confirmed at the 46th& L9 t k2 v7 r/ s
CTL Plenary Meeting, in 2009 $ ?5 K, D/ @; p: d! f# j0 DInstrument Accuracy Limits 9 O$ j1 t! ~( YMeasurement values stated in a CB Test Report shall be made with instruments with accuracies within ( v0 ~. p. G+ m4 Ethe limits stated below. These values apply unless more stringent requirements are given in the # p' j) c; x. d. R3 ureference standard. 1 s, g. Z3 Y5 {7 mParameter Range Instrument accuracy of; g0 _7 p1 A; r0 r
Measuring Range& x4 a( x2 C7 A4 o1 G; x5 [* z5 F
Voltage$ E5 b6 o+ E1 E, ?3 D: j7 k
- Up to 1000 V up to 1 kHz ± 1,5% : b$ u5 }. D0 m% [+ R5 i- Q1kHz up to 5 kHz ± 2%& r7 A' W0 W9 J
5 kHz up to 20 kHz ± 3%% t3 p4 n* f3 Z N
20 kHz and above ± 5%2 q% U+ }& ^$ L# ^2 Q0 A6 g
- 1000 V and above dc up to 20 kHz ± 3%7 x8 ~0 A) V* m* T1 m; I
20 kHz and above ± 5%5 v/ L9 w% x: L
Current 3 J% I% a1 U! [9 ]9 A Q! lUp to 5 A dc up to 60 Hz ± 1,5% 7 {8 J" o9 o% a! r60 Hz up to 5 kHz ± 2,5% * H( G9 f, h! f1 b% f5 kHz up to 20 kHz ± 3,5%; |) ?5 {8 J+ d+ w8 f
20 kHz and above ± 5%5 z' H: n( P* G" K
5 A and above dc up to 5 KHz ± 2,5% , |# q4 P$ a, z' A3 i2 f3 l5 kHz up to 20 kHz ± 3,5%% ^( `% \6 R+ k, x
20 kHz and above ± 5% # T# B: Z, I7 f9 F: [" d. GLeakage current& P }6 ?/ X {
- up to 30 mA 50/60 Hz ± 3,5%3 i. c. C/ C3 C. D6 L
- 30 mA and above 50 Hz - 5 kHz ± 5%/ w" [1 G$ }( J
Power (50/60 Hz) up to 1 W ± 3% 1 X" x" v7 W4 D( f; g1 W up to 3 kW ± 3% + A$ ^6 y# w X/ L9 o: v3 kW and above ± 5% ; q7 A& B. t4 W. [) V5 C( i& m8 M3 QPower Factor (50/60 Hz) ± 0,05' M! x+ E( h; r! }$ [
Frequency up to 10 kHz ± 0,2% " l+ b4 r" T9 C& g; OResistance 1 m up to 100 m and above 1 M up to 1 T ± 5% 4 y, d- v; I2 w# ]/ j( eabove 1 T ± 10%2 k% Z" G) @; Z1 s
for all other cases ± 3%- b- r. W" p/ T, h# S! ^
Parameter Range Instrument accuracy of9 H. |$ k5 C2 p: o! Q9 Z6 F
Measuring Range3 m) l, q: K1 d) a( f
Temperature 1,2+ ?( F/ j% l j* s: W- y, L1 ^: I9 w
below 100° C ± 2°C0 d5 ]* K) q- C0 P
100° C up to 500° C ± 3%+ S4 }1 k- _; w/ G5 \
- 35°C down to – 50°C ± 3°C ; c# f6 \; h6 \5 N% uTime 10 ms up to 200 ms ± 5% q; D4 o, X; _
200 ms up to 1 s ± 10 ms, i4 Z. h6 s4 @( g$ I
1 s and above ± 1% 5 K+ R9 ^# ~! H1 s. \( p( uLinear dimensions up to 1 mm ± 0,05 mm! X9 ^; X& m* \
1 mm up to 25 mm ± 0,1 mm/ Z. t! R/ t$ X& r, O& r' I
25 mm and above ± 0,5%1 L" T0 t8 X/ B: {: I
Mass above 10 g and up to 100 g ± 1%* u' W( W3 z T- B
100 g up to 5 kg ± 2% ) T( @! G& `; q% a5 kg and above ± 5%9 d0 A9 H q% \& Z" K) u9 v# g
Force for all values ± 6% $ f$ N& @9 k7 G1 l2 t' R' `Mechanical energy for all values ± 10% 4 f! E7 _7 f' `9 \Torque ± 10% / D4 T8 N+ @1 _! ~( k/ X$ s$ mAngles ± 1 degree* R/ M8 \* C1 a, L# N1 o0 l
Relative humidity 30% to 95% RH ± 6% RH ! F$ A/ V, @5 w9 _Barometric air pressure ± 10 kPa + g0 @5 S# k. E$ UGas & fluid pressure for static measurement ± 5%% M: U' |3 L2 ~3 Q3 t3 w& E& y
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, 1 G- D$ n5 V9 f4 Z- h. @* X“T” and “ J”, premium grade, are recommended. + B9 U. d- W/ j- |6 ]2 Not for measurements related to relative humidity. 1 _* L: X' k% [$ e5 s& B: l 3 e" Q( U( @: k+ N[attach]77316[/attach]- @# k! {4 Y2 [: F$ | 作者: ljbxki 时间: 2013-5-9 23:03
好东西！作者: dengwx 时间: 2014-5-5 09:17
官网下不了，只能花8个金币了，好东西，谢了！作者: plmijb 时间: 2014-6-4 10:44 本帖最后由 plmijb 于 2014-6-4 10:46 编辑 ( A2 T, F; |3 x3 m% c1 K' q D) G1 @* M0 L, X/ A+ V
现在的新版本是CTL-251C作者: liujy611 时间: 2019-11-17 15:44
筹备CNAS，正需要这个
DSH 251B& e6 c1 V) h$ ~& s, A( |; [8 z