Hioki 3256-50 - Maintenance and Service (Chapter 5); Replacing Batteries and Fuses

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4.2 Accuracy
4.2 Accuracy
Accuracy guarantee for
temperature and hu-
midity
Guaranteed accuracy
period
23±5°C(73±9°F), 80%RH or less
1 year
Regulated power sup-
ply range
3.4 V or lower (until the mark
lights up)
(rdg.: displayed value, dgt.: resolution)
Voltage Measurement
Range
[V]
Accuracy
±(rdg.)±(dgt.)
Input Impedance
(Frequency range)
V
420.0 m
4.200
42.00
420.0
1000
±0.5%±2
±0.5%±2
±0.5%±2
±0.5%±2
±0.5%±2
100 MΩ or more
Approx. 11MΩ
Approx. 10MΩ
Approx. 10MΩ
Approx. 10MΩ
V
*1
420.0 m
4.200
42.00
420.0
1000
±1.5%±3
*2
±1.2%±3
±1.2%±3
±1.2%±3
±1.2%±6
100MΩ or more
(50 to 100 Hz)
Approx. 11MΩ (50 to 500 Hz)
Approx. 10MΩ (50 to 500 Hz)
Approx. 10MΩ (50 to 500 Hz)
Approx. 10MΩ (50 to 500 Hz)
Overload protection (for one minute):
1000 VDC,1000 Vrms(sin)(CAT II),
600 VDC,600 Vrms(sin)(CATIII), or 10
7
V•Hz
*1: For the input of less than 10% of the full scale, ±2 dgt. is
added to the above measurement accuracies.
*2: The above measurement accuracy for the 420.0 mV range
is not defined for inputs of less than 1.0 mV.