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. z8 J" {5 Q% S' K, m7 _Standard(s): Generality No. Year- ? L# P& c' Y, J
DSH
# V# S1 X4 `6 I. m251B+ U; B# p0 J- S; K2 k! {: n
20095 A; ^* ]. s0 u1 R( v. L; V
Category: Various
0 j* f6 k7 T' v! l: jSubclause(s): ---4 P8 D! u6 r7 s3 j- T: r2 F
Developed by:, k. s' Y5 J' ^+ P* V0 i
WG4 – WG1
2 _* T# k& S3 D! I6 W# P: i. b, cSubject: Measurement accuracy Key words:
' `3 ^3 {* B, g/ L N4 h- Measuring range
4 n: A; l! L# ~0 s" p- Accuracy' O- l$ k2 R9 A/ W+ W U
- Instrument
t" c6 A# ?0 C& N5 W: oDecision confirmed at the 46th, N+ P6 J- }; q( ? I
CTL Plenary Meeting, in 2009
4 i% Y- r- u. }+ C) _Instrument Accuracy Limits
) f9 y9 |. ]. SMeasurement values stated in a CB Test Report shall be made with instruments with accuracies within
/ h% g/ l: L9 _% p4 W# Wthe limits stated below. These values apply unless more stringent requirements are given in the
& B. f/ Y' l V3 `6 ?0 breference standard.
5 W1 d4 b) Z2 W3 i0 v, WParameter Range Instrument accuracy of- C& `4 c4 \" A! ?# U# v
Measuring Range
: a) O0 i3 t8 B x; H& F- ?( eVoltage$ Q i* b: t* y" I- o
- Up to 1000 V up to 1 kHz ± 1,5%$ A R6 i$ h5 Y& N
1kHz up to 5 kHz ± 2%
& i" _6 o6 _9 B/ u9 m) W5 kHz up to 20 kHz ± 3%
4 c' s( v' v2 H& {20 kHz and above ± 5%* ^- v, p8 | m: j
- 1000 V and above dc up to 20 kHz ± 3%* k2 n( Y8 J$ [+ R. u0 v9 ^
20 kHz and above ± 5%. A0 S1 K+ D5 ]# T1 ? O
Current& {+ P5 Y, y+ @7 S4 o. `- i% j- j, q
Up to 5 A dc up to 60 Hz ± 1,5%
9 A1 S7 t0 N% g+ C+ [! c% [60 Hz up to 5 kHz ± 2,5%
2 i% X+ W4 e& M3 D* K5 kHz up to 20 kHz ± 3,5%- l) I4 ?& U) O, {7 d+ F
20 kHz and above ± 5%( B" U; X. \; j, }5 |; ]7 U" z
5 A and above dc up to 5 KHz ± 2,5%) f; r: D: k; X: u0 U, |
5 kHz up to 20 kHz ± 3,5%
$ \; |; }6 O: f. i( p20 kHz and above ± 5%
2 W2 ^" X y/ e1 vLeakage current% d- y) v2 K5 t1 }
- up to 30 mA 50/60 Hz ± 3,5%- @: @8 T+ i1 k( I1 E% G0 [
- 30 mA and above 50 Hz - 5 kHz ± 5%/ I1 C- h0 h' P
Power (50/60 Hz) up to 1 W ± 3%8 d& e2 U4 k" r9 N5 n
1 W up to 3 kW ± 3%2 ]1 u7 l7 m/ l8 V/ s
3 kW and above ± 5%
3 S4 I, Z- S3 v* o( c: gPower Factor (50/60 Hz) ± 0,05
$ }; V% ?$ D/ p; f& S, W, _& ZFrequency up to 10 kHz ± 0,2%
$ K0 O+ v1 X& a' QResistance 1 m up to 100 m and above 1 M up to 1 T ± 5%* e8 f' j! A! o$ P) A9 [1 n6 e2 R
above 1 T ± 10%
% R. k# W8 u1 G) {% W& U& y2 @for all other cases ± 3%6 _- d6 w3 j5 b% X! t% ?
Parameter Range Instrument accuracy of
& t# w, w- I3 b" ]" TMeasuring Range
9 `9 |1 T$ w2 s2 C/ mTemperature 1,20 ~6 E# ? r. z; }; Q6 B) n
below 100° C ± 2°C: P$ i" ]- U* Q& J) ~
100° C up to 500° C ± 3%" A6 O! e& ~! J: m1 G8 K0 \
- 35°C down to – 50°C ± 3°C: |# _. p# r4 q* \! T2 p" M3 u
Time 10 ms up to 200 ms ± 5%
/ `& R! ~, H" M6 X200 ms up to 1 s ± 10 ms
) r4 x4 V3 `( C, `/ C: v+ V& q( U# M1 s and above ± 1%/ y5 L3 i$ a3 F- @
Linear dimensions up to 1 mm ± 0,05 mm7 a2 x" c2 b: s) a* z5 t. x
1 mm up to 25 mm ± 0,1 mm8 d8 A$ U. s: a0 h L' k3 A$ ]
25 mm and above ± 0,5%
3 q) y0 ~2 \, @. P( ^Mass above 10 g and up to 100 g ± 1%
* n" m: A) g) k$ F @- c- `* F2 J100 g up to 5 kg ± 2%/ f- \! K5 a! A$ ^6 J9 Q1 p
5 kg and above ± 5%
+ W: D( W6 L9 M0 d, U9 YForce for all values ± 6%
& G/ ?/ ]/ ?1 S+ r4 r O- TMechanical energy for all values ± 10%; P9 h8 }8 a0 e, |& N- {
Torque ± 10%) ?) ]: e! A( c$ E2 @
Angles ± 1 degree
. n, M0 d/ [8 P6 XRelative humidity 30% to 95% RH ± 6% RH* m- k( h% R! A! @6 s- r
Barometric air pressure ± 10 kPa
0 u/ K4 B, J0 N; L; cGas & fluid pressure for static measurement ± 5%
& O/ b( ^& y$ f' N1 Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”,* v/ s1 R4 o) ^0 S
“T” and “ J”, premium grade, are recommended.+ @/ P! A6 ~& E3 j/ }
2 Not for measurements related to relative humidity.
3 N" P3 e. ?1 K2 _* P' R, ?: L# X9 X d5 e8 O' I
3 G6 j4 m. U) t
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