Hioki IR4057-50 - Appx. 2 Operation Uncertainty

Appx.2
Operation Uncertainty
Appx. 2 Operation Uncertainty
The operation uncertainty and the variations of measurement value for the
respective inuence quantity approved by EN/IEC61557 are as follows:
Intrinsic uncertainty/
inuence 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
Inuencing factor non-applicable for E
1
and E
4
to E
10
HIOKI IR4057B961-00