Uniform magnet field designed.
Precision spring with internal and externmal rotating loop.
High spurious frequency greater than 250Hz
Lower distortion smaller than 0.1%
Main parametes controlled within ± 2.5%
Wide band
| Specifications (at 25℃): |
|
|
20DC10A |
20DC10B |
20DC14 |
20DC28 |
20DC35 |
20DC40 |
|
Natural Frequency |
10±2.5% |
10±2.5% |
14±2.5% |
28±2.5% |
35±2.5% |
40±2.5% |
| Open Circuit Damping |
0.316±2.5% |
0.30±2.5% |
0.22±2.5% |
0.27±2.5% |
0.39±2.5% |
0.369±2.5% |
| Damping with shunt Resistance |
0.70±2.5%
(1000Ω) |
0.70±2.5%
(1000Ω) |
0.51±2.5%
(1000Ω) |
0.552±2.5%
(1000Ω) |
0.612±2.5%
(1500Ω) |
0.57±2.5%
(1500Ω) |
|
Intrinsic Voltage Sensitivity (V/cm·s-1) |
0.275±2.5% |
0.28±2.5% |
0.28±2.5% |
0.39±2.5% |
0.41±2.5% |
0.415±2.5% |
| Sensitvity with Shunt Resistance(V/cm·s-1) |
0.197±2.5%
(1000Ω) |
0.20±2.5%
(1000Ω) |
0.20±2.5%
(1000Ω) |
0.28±2.5%
(1000Ω) |
0.296±2.5%
(1500Ω) |
0.30±2.5%
(1500Ω) |
| Coil Resitance(Ω) |
395±2.5% |
395±2.5% |
395±2.5% |
395±2.5% |
575±2.5% |
575±2.5% |
| Distortion(%) |
＜0.1 |
＜0.1 |
＜0.1 |
＜0.1 |
＜0.1 |
＜0.1 |
| Typical Spurious Frequency(Hz) |
≥250 |
≥250 |
≥300 |
≥400 |
≥450 |
≥500 |
| Suspending Mass(g) |
11.2±2.5% |
11.0±2.5% |
11.2±2.5% |
11.2±2.5% |
8.2±2.5% |
8.2±2.5% |
| Case to Coil Motion p-p(mm) |
1.52 |
1.5 |
1.52 |
1.52 |
1.52 |
1.52 |
| Maintains Specification to Tile |
10° |
10° |
10° |
90° |
90° |
90° |
| Basic Unit Diameter(mm) |
25.4 |
25.4 |
25.4 |
27.0 |
27.0 |
27.0 |
| Basic Unit High(mm) |
33.5 |
33.5 |
33.5 |
33.5 |
33.5 |
33.5 |
| Basic Unit Weight(g) |
87 |
87 |
87 |
100 |
95 |
95 |
| Operating Temperature(℃) |
-40—+90 |
-40—+90 |
-40—+90 |
-40—+90 |
-40—+90 |
-40—+90 |
| Warranty(year) |
3 |
3 |
3 |
3 |
3 |
3 | |
