NF ZA57630, Инструкция по эксплуатации

Страница: 211 / 246

5.8 Measurement Accuracy
5
-
27
ZA57630
5.8.3 Measurement Mode IMPD
−2T
Unless otherwise specified, the conditions are that 0 to +40 °C, open and short correction was
performed after warming up for at least 30 minutes.
・
Basic accuracy ±0.32 %
・
Measurement range
Measurement
range
Z
r
Measurable
range Recommended range
1 kΩ No limitation 90 Ω to 10 kΩ
100 Ω ≤ 110 Ω 9 Ω to 100 Ω
10 Ω ≤ 11 Ω 0.9 Ω to 10 Ω
1 Ω ≤ 1.1 Ω 0.09 Ω to 1 Ω
Measurable range: Approximate range in which measurement
and display are possible (supplementary
values).
Recommended range: Operating range in which measurement
accuracy is high.
・
Impedance measurement accuracy
Accuracy of |Z| ±A
Z
[%] A
Z
＝
{(A
＋
B×U
＋
K
Z
＋
K
Y
)×K
V
＋
K
B
}×K
T
Accuracy of phase angle θ of impedance
±P
Z
[°] P
Z
＝
0.573×A
Z
Remark The measurement accuracy when A
Z
exceeds 10[%] is a
supplementary value.
Each parameter value in the expression of A
Z
is listed below. The meaning of the symbol
used when calculating each parameter is shown below.
Z
r
: Measurement range [Ω]
Z
X
: Measurement value [Ω] of magnitude of impedance |Z|
・
U: Ratio coefficient
Measurement range
Z
r
U
1 kΩ Z
X
/ Z
r
(however, 0.1 when Z
X
/ Z
r
< 0.1
Other than 1 kΩ Z
r
/ Z
X
(however, 1 when Z
r
/ Z
X
< 1
・
A (upper row): Basic coefficient [%]
・
B (lower row): Proportional coefficient [%]
Measurement time setting is larger than (200 ms or (20 / measurement frequency[Hz]) s) or
more.