KYORITSU 3316 - Manual (Page 7)

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Operating error (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 × √
（ Ｅ
12
＋ Ｅ
22
＋ Ｅ
32
）
Ａ ： Intrinsic error (%)
Ｂ ： Operating error (%)
Ｅ
1
： Variation due to changing the temperature (%)
Ｅ
2
： Variation due to changing the Battery voltage (%)
Ｅ
3
： Variation due to changing the position (%)
Nominal operating conditions
Ambient temperature : 0 ∼ 40℃
Relative humidity
: 90% or less
External magnetic field : 400A/m or less
Position
: Horizontal ∼ ±90°
Battery voltage : within "BATTERY. GOOD" range
< AC voltage range>
Measured voltage
Accuracy
0 ∼ 600V
within ±3% of max scale value (ACV range)
within ±5% of max scale value (Others)
Range
50V/10MΩ
125V/20MΩ
250V/50MΩ
500V/100MΩ
1000V/2000MΩ
0.05MΩ
0.125MΩ
0.25MΩ
0.5MΩ
1MΩ
at least 3500 times
at least 2500 times
at least 2000 times
at least 1000 times
at least 300 times
Possible number
of measurement
Possible number of measurement within the "BATTERY.GOOD"
range.(Measure 5 sec., and take pause for 25 sec..)
Resistor
for test