KYORITSU 3147A - Manual (Page 7)

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<Number of measurement>
Possible number of measurement within the "BATTERY.GOOD"
range.(Measure 5 sec., and take pause for 25 sec.)
For MODEL3147A, *1: at least 800 times, *2: at least 500 times.
<Operating error>
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>
MODEL
Measured voltage
Accuracy 3144A, 3147A
0∼600V
within ±3% of the max. scale value
3145A, 3146A, 3148A
0∼300V
50V/10MΩ
100V/20MΩ
125V/20MΩ
250V/50MΩ
500V/100MΩ
Range
0.05MΩ
0.1MΩ
0.125MΩ
0.25MΩ
0.5MΩ
at least 1300 times
at least 1300 times
at least 1300 times*1
at least 1100 times
at least 800 times*2
Possible number
of measurement Resistor
for test