DSH 251B Measurement accuracy

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DSH 251B 8 o- q# f% H3 q  ^& `

Measurement accuracy 4 J% A5 ^0 P' o9 C8 [; X* G& m  Y

N/A

Generality

Standard(s): Generality No. Year
DSH
2 x- J& c* l$ j251B
2009
% n! H: D) z2 R# x* oCategory: Various
Subclause(s): ---
5 C( F- U& E3 f# a+ c. iDeveloped by:
WG4 – WG1
( L! G+ V/ ~! G3 U( N! B9 C- }Subject: Measurement accuracy Key words:
- Measuring range
- h* Q- M% f. Z# n1 k  m- Accuracy
7 s0 P& z% r) [, w( Z* ?2 j- Instrument
' G* I8 J, ]' V+ u/ F9 ADecision confirmed at the 46th
! O( ~) f  Y" G$ t: @6 ~/ [CTL Plenary Meeting, in 2009
$ x/ ]9 u+ W6 R$ ]Instrument Accuracy Limits
Measurement values stated in a CB Test Report shall be made with instruments with accuracies within
1 [4 M$ l8 }9 R! t1 j! m' x: Zthe limits stated below. These values apply unless more stringent requirements are given in the
reference standard.
6 j/ ]$ B% E7 ?- ~# ]. u1 ~Parameter Range Instrument accuracy of
Measuring Range
Voltage
- Up to 1000 V up to 1 kHz ± 1,5%
1kHz up to 5 kHz ± 2%
  i! ?9 s' a- d* A8 G+ i; O5 kHz up to 20 kHz ± 3%
' E; P: n' Q9 ?1 L& w& |; ?7 e! F20 kHz and above ± 5%
- 1000 V and above dc up to 20 kHz ± 3%
' K4 n% r, `% j( U" Y: ~+ H- P20 kHz and above ± 5%
/ ^( C2 y$ b/ }6 m4 l7 e* @Current
" D9 ]# P3 D5 c1 c( q, \4 l( @Up to 5 A dc up to 60 Hz ± 1,5%
60 Hz up to 5 kHz ± 2,5%
5 kHz up to 20 kHz ± 3,5%
20 kHz and above ± 5%
5 A and above dc up to 5 KHz ± 2,5%
5 kHz up to 20 kHz ± 3,5%
6 G  l$ o3 w7 U7 P" R. H' J20 kHz and above ± 5%
Leakage current
$ W8 t9 a$ m2 Y/ U2 Z: x- up to 30 mA 50/60 Hz ± 3,5%
9 a. N' y6 C' Y1 r: |- 30 mA and above 50 Hz - 5 kHz ± 5%
. V% \9 ]6 l; R$ |9 t; N$ H0 QPower (50/60 Hz) up to 1 W ± 3%
1 W up to 3 kW ± 3%
- e$ f$ c$ E( F3 kW and above ± 5%
- s# @6 {$ W+ T$ ^. C/ q. `; k1 \Power Factor (50/60 Hz) ± 0,05
Frequency up to 10 kHz ± 0,2%
4 l; @  {: i: FResistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
above 1 T ± 10%
% ~. A. @  N: I4 Lfor all other cases ± 3%
Parameter Range Instrument accuracy of
Measuring Range
Temperature 1,2
* n: [* @8 m! Q3 k+ {2 Ubelow 100° C ± 2°C
* u; [7 P! s, Y7 Q! [100° C up to 500° C ± 3%
- 35°C down to – 50°C ± 3°C
Time 10 ms up to 200 ms ± 5%
200 ms up to 1 s ± 10 ms
& X( R/ h) J* N/ ?( Q3 e9 ^1 s and above ± 1%
Linear dimensions up to 1 mm ± 0,05 mm
/ }; Y( m& Q+ D5 {* T: @4 t5 k1 mm up to 25 mm ± 0,1 mm
5 j& z6 \1 f- \4 ?- d0 e25 mm and above ± 0,5%
% K: i% _8 o% c) b. gMass above 10 g and up to 100 g ± 1%
100 g up to 5 kg ± 2%
! u" t1 E( d+ T9 A1 x- t" m" F; B5 kg and above ± 5%
Force for all values ± 6%
Mechanical energy for all values ± 10%
Torque ± 10%
Angles ± 1 degree
) g! u4 c4 y! l  n" KRelative humidity 30% to 95% RH ± 6% RH
Barometric air pressure ± 10 kPa
' ~! H  I! N) R' d5 |% @Gas & fluid pressure for static measurement ± 5%
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,
“T” and “ J”, premium grade, are recommended.
2 ~: _8 s( _- D6 G2 Not for measurements related to relative humidity.
& s- `$ z7 k$ D# j' [* w& J

ljbxki

好东西！

dengwx

官网下不了，只能花8个金币了，好东西，谢了！

plmijb

2 Z% w6 n- z4 Y* G- K6 \* A: H现在的新版本是CTL-251C

liujy611

筹备CNAS，正需要这个