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Appx.
2
Operation Uncertainty
Appx. 2 Operation Uncertainty
The operation uncertainty and the variations of measurement value for the
respective influence quantity approved by EN/IEC61557 are as follows:
Intrinsic uncertainty/
influence quantity
Operation
range
Variation
Insulation
resistance
Low resistance
A
Intrinsic
uncertainty
Reference
condition
±5% rdg
±3% rdg ±2 dgt
E
2
Supply voltage
4.5 V to 6.8 V
±4% rdg
±3% rdg ±2 dgt
E
3
Temperature
0°C to 35°C
±4% rdg
±3% rdg ±2 dgt
B
Operation
uncertainty
±12% rdg
±30% rdg
Guaranteed range of operation
uncertainty
1st effective
measurement
range
0.2
Ω
to 2
Ω
Influencing factor non-applicable for E
1
and E
4
to E
10
HIOKI IR4057B961-00
Содержание IR4053
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