Sanwa PC20TK - Error Rate; Example of Completing the Table for Test Results

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5-2 Error rate
Error rate is represented as the percentage ratio of reading M on the unit under measurement (the
PC20TK) minus true value T (reading on the standard) to true value T.
M−T
= - × 100 (%)
T
5-3 Example of completing the table for test results
Table for Test Results
Model : PC20TK Tested on : March 10, 2008
Serial No. : 2031234
Test conditions : Temperature 23°C ; relative humidity 60 %
: Frequency of AC voltage and current 50 Hz Tested by: Mr. Saburo Sanwa
Functional mode
/range
Reading M on
PC20TK
(displayed value)
Reading T on
standard
(true value)
Error rate
Accuracy range
DC 400 mV 380.0 mV 378.01 mV +0.53 % 376.0~384.0 mV
DC 4 V 3.800 V 3.7752 V +0.66 % 3.760~3.840 V
DC 40 V 38.00 V 37.732 V +0.71 % 37.60~38.40 V
DC 400 V 380.0 V 378.21 V +0.47 % 376.0~384.0 V
DC 750 V 600 V 594.1 V +1.00 % 592~608 V
AC 4 V 3.800 V 3.8338 V −0.88 % 3.734~3.866 V
AC 40 V ————
AC 400 V 380.0 V 384.04 V −1.05 % 373.8~386.2 V
AC 750 V ————
DC 400 µA 380.0 µA 377.52 µA +0.66 % 374.1~385.9 µA
DC 4000 µA ————
DC 40 mA 38.00 mA 37.631 mA +0.98 % 37.41~38.59 mA
DC 400 mA ————
AC 400 µA ————
AC 4000 µA 3800 µA 3815.1 µA −0.39 % 3719~3881 µA
AC 40 mA ————
AC 400 mA 380.0 mA 383.73 mA −0.97 % 371.9~388.1 mA
40 nF ————
400 nF ————
4 µF 2.200 µF 2.1049 µF +4.52 % 2.040~2.360 µF
40 µF 10.00 µF 9.761 µF +2.45 % 9.24~10.76 µF
100 µF ————
Ω 400 Ω 200.0 Ω 198.56 Ω +0.72 % 196.5~203.5 Ω
Ω 4 kΩ ————
Ω 40 kΩ 20.00 kΩ 19.901 kΩ +0.50 % 19.65~20.35 kΩ
Ω 400 kΩ ————
Ω 4 MΩ 1.000 MΩ 0.9906 MΩ +0.95 % 0.980~1.020 MΩ
Ω 40 MΩ ————