DSH 251B Measurement accuracy
http://decisions.iecee.org/icons/ecblank.gif DSH 251B
Measurement accuracy
N/A
Generality
Standard(s): Generality No. Year
DSH
251B
2009
Category: Various
Subclause(s): ---
Developed by:
WG4 – WG1
Subject: Measurement accuracy Key words:
- Measuring range
- Accuracy
- Instrument
Decision confirmed at the 46th
CTL Plenary Meeting, in 2009
Instrument Accuracy Limits
Measurement values stated in a CB Test Report shall be made with instruments with accuracies within
the limits stated below. These values apply unless more stringent requirements are given in the
reference standard.
Parameter Range Instrument accuracy of
Measuring Range
Voltage
- Up to 1000 V up to 1 kHz ± 1,5%
1kHz up to 5 kHz ± 2%
5 kHz up to 20 kHz ± 3%
20 kHz and above ± 5%
- 1000 V and above dc up to 20 kHz ± 3%
20 kHz and above ± 5%
Current
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%
20 kHz and above ± 5%
Leakage current
- up to 30 mA 50/60 Hz ± 3,5%
- 30 mA and above 50 Hz - 5 kHz ± 5%
Power (50/60 Hz) up to 1 W ± 3%
1 W up to 3 kW ± 3%
3 kW and above ± 5%
Power Factor (50/60 Hz) ± 0,05
Frequency up to 10 kHz ± 0,2%
Resistance 1 m up to 100 m and above 1 M up to 1 T ± 5%
above 1 T ± 10%
for all other cases ± 3%
Parameter Range Instrument accuracy of
Measuring Range
Temperature 1,2
below 100° C ± 2°C
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
1 s and above ± 1%
Linear dimensions up to 1 mm ± 0,05 mm
1 mm up to 25 mm ± 0,1 mm
25 mm and above ± 0,5%
Mass above 10 g and up to 100 g ± 1%
100 g up to 5 kg ± 2%
5 kg and above ± 5%
Force for all values ± 6%
Mechanical energy for all values ± 10%
Torque ± 10%
Angles ± 1 degree
Relative humidity 30% to 95% RH ± 6% RH
Barometric air pressure ± 10 kPa
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 Not for measurements related to relative humidity.
好东西！ 官网下不了，只能花8个金币了，好东西，谢了！ 本帖最后由 plmijb 于 2014-6-4 10:46 编辑
现在的新版本是CTL-251C 筹备CNAS，正需要这个
页:
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