Hioki IM3533 - Measurement Range and Accuracy

14.2 Measurement Range and Accuracy
342
The measurement accuracy is calculated from a basic accuracy, which is based on the accuracy for
impedance Z (% rdg.) and phase angle
 (° ), and the following coefficients.
Basic accuracy
Measurement conditions of basic accuracy coefficient table
• Using the Model 9262 Test Fixture
• Measurement speed: SLOW2
• Cable length: 0 m
• Operation 60 minutes after the power is turned on.
• Open circuit compensation and short circuit compensation both being performed.
• Temperature and humidity: 23±5
°C, 80 %RH or less
When the measurement conditions differ from the above, multiply the level coefficient (C), measure-
ment speed coefficient (D), cable length coefficient (E), DC bias coefficient (F), and temperature coeffi-
cient (G) by the basic accuracy.
The basic accuracy is calculated by determining coefficient A and B from the basic accuracy coefficient
table in accordance with the measurement frequency and measurement range, and then using the fol-
lowing expression.
The basic accuracy becomes the accuracy [%] of Z and accuracy [
° ] of .
Basic accuracy formula
14.2 Measurement Range and Accuracy
Impedance measurement
See "Example calculation of basic accuracy" (p. 347)
Measurement accuracy = Basic accuracy × C × D × E × F × G
C: Level coefficient/ D: Measurement speed coefficient/ E: Cable length coefficient/
F:DC bias coefficient/ G: Temperature coefficient
1 k range or more
Basic accuracy = ±
Basic accuracy = ±
100  range or less
Zx: Impedance (effective value or value obtained by the following expression) of the test sample
= L [H]
(when  = 90)
10 × Zx[]
Range []
- 1A + B ×
- 1A + B ×
Range[]
Zx[]
= R[] (when  = 0)
=
1
 C [F]
(when  = -90)
Zx[]