18
Temperature condition: 23
℃
±5
℃
Humidity condition: ≤65% R.H.
Zero value adjustment : open circuit and short circuit zeroed before the test
Warm-up time:> 30 minutes
Calibration time: 12 months
C: 0.20%*(1+ Cx/Cmax+ Cmin/Cx )(1+Dx)(1+ks+kv+kf);
L: 0.20%*(1+ Lx/Lmax+ Lmin/Lx )(1+1/Qx)(1+ks+kv+kf);
Z: 0.20%*(1+ Zx/Zmax+ Zmin/Zx )(1+ks+kv+kf);
R: 0.20%*(1+ Rx/Rmax+ Rmin/Rx )(1+Qx)(1+ks+kv+kf);
D: 0.20%*(1+ Zx/Zmax+ Zmin/Zx )(1+Dx+Dx*Dx)(1+ks+kv+kf );
Q: 0.20%*(1+ Zx/Zmax+ Zmin/Zx )(Qx+1/Qx )(1+ks+kv+kf );
Wherein
1. L, C, R, Z are relative errors; D, Q, θ are absolute errors
2. Where the subscript is x, it is the measurement of this parameter; where the subscript is max, it
is the maximum value and where the subscript is min, it is the minimum value
3. Ks is the velocity factor, kv is the voltage factor, kf is the frequency factor
The maximum and minimum values of the measurement parameters that affect accuracy
Frequenc
y(Hz)
100
120
200
400
800
1K
2K
4K
8K
10K
Cmax
800
667
400
200
100
80
40
20
10
8
Cmin
1500 1250
750
375
187
150
75
37.5
18.7
15
Lmax
1590 1325
795
397.5
198.8
159
79.5
39.8
19.9
15.9
Lmin
3.2
2.6
1.6
0.8
0.4
0.32
0.16
0..08
0.04
0.032
Z/Rmax
1
Z/Rmin
1.59
Frequenc
y (Hz)
15K
20K
40K
50K
80K
100K
Cmax
5.3
4
2
1.6
1
0.8
Cmin
10
7.5
3.75
3
1.87
1.5
Lmax
10.6
7.95
3.98
3.18
1.99
1.59
Lmin
0.021
0.016
0.008
0.0064
0.004
0.0032
Z/Rmax
1
Z/Rmin
1.59
Wherein: the unit of Cmax is uF; the unit of Cmin is pF; the unit of Lmax is H; the unit of Lmin is
mH; the unit of Zmax / Rmax is MΩ; the unit of Zmin / Rmin is in Ω;
Measurement speed error factor ks:
Measurement speed error factor kf:
Frequency
100~1K
2K~10K
15K
20K
40K
50K 80K
100K
kf
0
0.5
1
2
3
Measurement speed error factor kv:
Level(mV) 100
300
600
1000
1500
2000
kv
10
3
1
0
1
2
Speed Mode Slow
Medium
Fast
ks
0
1
8
