KYORITSU KEW 3021A User Manual

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6
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<Operating uncertainty>
Operating uncertainty (B) is an error obtained under the nominal
operating conditions, and calculated with the intrinsic error (A),
which is an error of the instrument used, and the error (En) due to
variations. According to IEC61557, the maximum operating error
should be within +/-30%.
Ｂ ＝︱Ａ︱＋ 1.15 ×
√
（ Ｅ1
2
＋ Ｅ2
2
＋ Ｅ3
2
）
Ａ ： Intrinsic error（％）
Ｂ ： Operating uncertainty（％）
Ｅ1： Variation due to changing the position（％）
Ｅ2： Variation due to changing the Supply voltage（％）
Ｅ3： Variation due to changing the temperature（％）
Nominal operating conditions
Ambient temperature : 0〜40℃
Relative humidity : 90% or less
Position : Horizontal〜±90゜
Battery voltage : within the battery effective range
KEW3023A
Nominal voltage 1000V 500V 250V 100V
Auto Range 0〜4/40/400/2000MΩ
0〜4/40/200MΩ
Open circuit
voltage
Nominal test voltage 100%~120%
Short circuit
current
Within 1.5mA
Nominal test
current
1MΩ 0.5MΩ 0.25MΩ 0.1MΩ
1mA 0%〜＋20%
1
st
effective
measurement
range
0.200〜
1000MΩ
0.200〜
200.0MΩ
0.200〜
40.00MΩ
0.200〜
20.00MΩ
Center scale
range
50MΩ 50MΩ 5MΩ 5MΩ
Accuracy ±(2%rdg＋6dgt)
2
nd
effective
measurement
range
0.110〜0.199MΩ
1001〜
2000MΩ
200.1〜
2000MΩ
40.01〜
2000MΩ
20.01〜
200.0MΩ
Accuracy ±(5%rdg＋6dgt)
Accuracy at 0 Within 6dgt
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KYORITSU KEW 3021A Specifications

General

Brand	KYORITSU
Model	KEW 3021A
Category	Test Equipment
Language	English