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|  DSH 251B
0 ^; y4 X( p. P2 j$ r0 G- i
; ^, }' |% ^ n! B! i8 Z! m: H W | Measurement accuracy
d$ o, `; k7 j' Z: d9 |* | | N/A
, b; S9 r- h9 S) Y( q9 A$ r/ b* ` | Generality; n' h' O' h8 n/ C7 X B9 ~
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- l9 K \: ~# ~: Y1 h; N9 ~# T G5 W
Standard(s): Generality No. Year2 j/ R. i5 S, V& g( O' z
DSH
2 ~' I- ?& S& |$ h' B3 I; A251B/ H+ h% G$ R" w! u
20096 l, T7 Q/ H8 V. `) c
Category: Various
8 l$ V7 s# M" s9 r: aSubclause(s): ---0 m( y% a' B" y5 m2 f
Developed by:. v. U4 @* c" f: ^) V
WG4 – WG1 d* i( R, y9 l5 _# k9 ]% ?
Subject: Measurement accuracy Key words:5 p% w+ W: U& @( E
- Measuring range+ T! n% c9 `& R1 e1 d
- Accuracy5 X! c4 U. B# K
- Instrument, S8 H; e; V! r$ G
Decision confirmed at the 46th( O5 e" L) ~$ \
CTL Plenary Meeting, in 2009& D8 C/ n1 F3 Y8 P, e
Instrument Accuracy Limits
5 M+ q x8 Z5 L( u8 n' f; l4 VMeasurement values stated in a CB Test Report shall be made with instruments with accuracies within" S1 |3 N- a5 p" d: s$ l$ L6 P
the limits stated below. These values apply unless more stringent requirements are given in the( D1 {! w, }% g! z1 b
reference standard.
( c6 ]0 L0 p; ^+ u( lParameter Range Instrument accuracy of- c& U2 e1 t. u6 B; F( q
Measuring Range
: h" b. d4 ^7 } |) `Voltage
\, |+ f* r$ [$ T- Up to 1000 V up to 1 kHz ± 1,5%
2 n0 l" e) U+ W `/ e' I7 R" G1kHz up to 5 kHz ± 2%
8 x; ?/ V0 u" ~( S3 W5 kHz up to 20 kHz ± 3%0 q% Z. r1 ]. O; u
20 kHz and above ± 5%/ L% l* t! _' |
- 1000 V and above dc up to 20 kHz ± 3%
: \7 F$ E" h8 I \6 ^* B2 f20 kHz and above ± 5%
3 {' C% E) E w* G( G+ wCurrent
5 j* K1 ?- V0 w5 S6 HUp to 5 A dc up to 60 Hz ± 1,5%! j+ [; [# F. w: N
60 Hz up to 5 kHz ± 2,5%
0 @' ?* M" r# F0 n5 kHz up to 20 kHz ± 3,5%
. u! Y6 v0 p; o# I1 B) M20 kHz and above ± 5%0 |& @: G4 I2 T: A! `/ e/ T5 \
5 A and above dc up to 5 KHz ± 2,5%/ _. X3 O B. D$ ?4 n
5 kHz up to 20 kHz ± 3,5%5 `3 _) Q' x: f( T; G
20 kHz and above ± 5%1 N7 \ d! ]5 J3 B+ U2 E- L
Leakage current
- P. n% g5 Y+ l1 w9 S# B3 H8 Y6 I- up to 30 mA 50/60 Hz ± 3,5%
) L) x9 O( q% A( I7 L# M( w: a- T7 r" n- 30 mA and above 50 Hz - 5 kHz ± 5%
+ ]: f5 Z, h# RPower (50/60 Hz) up to 1 W ± 3%
/ E b) @8 a2 U; o2 C+ v1 W up to 3 kW ± 3%% Z8 U+ e5 L4 J, [) E
3 kW and above ± 5%
& Z/ ]6 W; }2 @0 ~Power Factor (50/60 Hz) ± 0,05& N: }; A6 j% C$ U& P
Frequency up to 10 kHz ± 0,2%# ~7 R. v$ S& g$ W* q
Resistance 1 m up to 100 m and above 1 M up to 1 T ± 5%- X! u& n! [# @/ g* l# w+ i
above 1 T ± 10%
, Z4 u1 w6 \2 l" g9 n+ gfor all other cases ± 3%
, R W2 k( c* e# |Parameter Range Instrument accuracy of
; {, O+ |" Y: U4 xMeasuring Range
8 w5 d' [) g7 X+ l& t. DTemperature 1,2' {; U: M6 h- Z1 ^7 F
below 100° C ± 2°C
8 u6 W$ E: W7 i8 A, M/ q100° C up to 500° C ± 3%
9 S. I6 R- Y' K! U- L$ i0 X- 35°C down to – 50°C ± 3°C, @7 t, S5 ^. S+ d) x# p a& G% K, m; @
Time 10 ms up to 200 ms ± 5%) ]& ~4 L/ q+ D6 }2 }
200 ms up to 1 s ± 10 ms
3 Y' u/ C. N# B. b8 E1 s and above ± 1%' a |% u% X, O% ^6 N$ |6 V
Linear dimensions up to 1 mm ± 0,05 mm8 p5 Q8 s! C# {6 N! H
1 mm up to 25 mm ± 0,1 mm, q* H L; f. c6 V! m' ^+ v
25 mm and above ± 0,5%
$ [! s# [2 _) `# m1 iMass above 10 g and up to 100 g ± 1%; k3 [% d e: K' T% u* y: H8 O
100 g up to 5 kg ± 2%
6 ]$ F6 u7 A' {5 kg and above ± 5%
7 A7 N% o" _5 qForce for all values ± 6%
# J( F7 R8 m; o* m7 T- IMechanical energy for all values ± 10%
; P S% q- d9 xTorque ± 10%) Z* T7 w8 L4 [. _0 A
Angles ± 1 degree3 ]- U8 b" R- n$ Y
Relative humidity 30% to 95% RH ± 6% RH8 _0 K; \0 {3 @
Barometric air pressure ± 10 kPa* C0 J3 d) X+ Y
Gas & fluid pressure for static measurement ± 5%4 }& J6 w( f. a& r
1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,: m8 s+ [" U- Z/ A* o5 k: o
“T” and “ J”, premium grade, are recommended.
5 |. l9 T6 n$ J- ~" r+ s2 Not for measurements related to relative humidity. {* ~, o K6 c: D. K6 w
9 n/ V/ J! \* p; u0 j% C& S3 \4 y; z2 v- U
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