Quality Inspection Report of 2DXHC20-300 Two Dimensional Helmholtz Coil

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2DXHC20-300 Two Dimensional Helmholtz Coil 2DXHC20-300 Two Dimensional Helmholtz Coil 2DXHC20-300 Two Dimensional Helmholtz Coil

Overall Dimensions: 793mm(L) x 478mm(W) x 785mm(H)
Coil spacing
Y Axial: 218mm
Z Axial: 115mm
Weight: 252kg

 

Performance test report
 Introduction
    1. Test purpose
Through the analysis of the test results, the evaluation of the product performance is obtained;
Evaluate whether the test product meets the technical requirements;
Provide reference data for product design and after-sales service, and provide a strong basis for leaving the factory.
    2. Basic information
 Product Name:
Two dimensional Helmholtz coil		 Product model: 2DXHC20-300
Test time: July 19, 2023
    3. Testing environment
The detection environment is closer to the actual environmental conditions used by the user, including factors such as lead wire length and ambient temperature. The time is selected in the time interval where the fluctuation of the geomagnetic field is small. Before the test, the instruments required for the test were turned on and warmed up in advance and the measurement environment was recorded, as shown in Table 1.
Measurement environment
Environment
temperature		 Product initial
temperature		 Lead length Environmental
magnetic field
31.0℃ 31.0℃ - 0~30000nT
Table 1 Measurement environment data
 
Magnetic field parameter test
    1. Using the device
DXACP power amplifier
DX-F2031 power supply
DX-180 Gauss Meter
    2. Magnetic field measurement
This product uses the following measurement methods:
Fixed-point measurement: measure the magnetic field at the target point
Magnetic field strength
No. Display current (A) Display voltage Voltage (V) Magnetic field
strength（Gs）
Z axis 14 - 166.33
Z axis 28 - 332.82
Z axis 14 - 82.03
Y axis 28 - 164.13
Y axis 42 - 246.32
Y axis 56 - 326.21
Table 2 Magnetic field strength data
 
Magnetic field uniformity
Measuring air gap Measuring area Measuring current Extremum
Max		 Extremum
Min		 Uniformity Note
Y axis Sφ155mm 56A 325.84Gs 324.81Gs -0.44% 　
Z axis Sφ100mm 28A 332.52Gs 331.44Gs -0.41% 　
Table 3 Uniformity data
 
AC magnetic field strength
No./Test frequency Display current (A) Display voltage Voltage (V) Magnetic field
strength（Gs）
Z axis/5Hz 9 27 106.62
Z axis/10Hz 6 36 74.07
Z axis/15Hz 3 26 37.51
Y axis/5Hz 9 26 52.57
Y axis/10Hz 6 34 35.77
Y axis/15Hz 3 26 18.48
Table 4 Data of AC magnetic field strength
　
Electrical parameter test
    1. Using equipment
Digital multimeter
Impedance analyzer
    2. Test method
The digital instrument with bridge circuit and voltammetry is used for measurement. The measurement results are shown in the table below.
Resistance R measurement
No. Product temperature Measuring resistance ResistanceR@20℃ ResistanceR@85℃
Z axis 31.0℃ 1.270Ω 1.209Ω 1.570Ω
Y axis 31.0℃ 0.880Ω 0.838Ω 1.088Ω
Table 5 Resistance R data
 
Z-axis inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 83.8865m  1.50000k  86.1233m 27.4
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
10.8887 20 791.18  1.50000k
Table 6 Z-axis inductance Ls, reactance Z data
 
Z-axis inductance Ls, reactance Z scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  86.1028m 10.8887 102 767.4  84.9804m 409.937
2 27.4  86.1233m 14.8781 103 774.8  84.9669m 413.826
3 34.8  86.1186m 18.8714 104 782.2  84.9531m 417.711
4 42.2  86.1073m 22.8659 105 789.6  84.9403m 421.601
5 49.6  86.0588m 26.8506 106 797  84.9277m 425.491
6 57  86.0858m 30.8583 107 804.4  84.9121m 429.365
7 64.4  86.1003m 34.8647 108 811.8  84.9010m 433.259
8 71.8  86.0948m 38.8638 109 819.2  84.8877m 437.142
9 79.2  86.0893m 42.8628 110 826.6  84.8745m 441.023
10 86.6  86.0840m 46.8619 111 834  84.8600m 444.897
11 94  86.0785m 50.8604 112 841.4  84.8481m 448.784
12 101.4  86.0727m 54.8586 113 848.8  84.8342m 452.658
13 108.8  86.0626m 58.8533 114 856.2  84.8212m 456.536
14 116.2  86.0568m 62.8503 115 863.6  84.8095m 460.419
15 123.6  86.0528m 66.8484 116 871  84.7952m 464.288
16 131  86.0446m 70.8428 117 878.4  84.7836m 468.17
17 138.4  86.0310m 74.8319 118 885.8  84.7705m 472.043
18 145.8  86.0292m 78.8304 119 893.2  84.7561m 475.907
19 153.2  86.0225m 82.8242 120 900.6  84.7439m 479.783
20 160.6  86.0258m 86.8278 121 908  84.7329m 483.664
21 168  86.0077m 90.8087 122 915.4  84.7153m 487.506
22 175.4  85.9995m 94.7989 123 922.8  84.7058m 491.393
23 182.8  85.9878m 98.7847 124 930.2  84.6944m 495.269
24 190.2  85.9818m 102.776 125 937.6  84.6836m 499.146
25 197.6  85.9753m 106.767 126 945  84.6694m 503.003
26 205  85.9635m 110.749 127 952.4  84.6572m 506.87
27 212.4  85.9528m 114.733 128 959.8  84.6445m 510.734
28 219.8  85.9430m 118.716 129 967.2  84.6331m 514.604
29 227.2  85.9334m 122.699 130 974.6  84.6200m 518.462
30 234.6  85.9244m 126.683 131 982  84.6078m 522.325
31 242  85.9128m 130.661 132 989.4  84.5963m 526.192
32 249.4  85.9043m 134.643 133 996.8  84.5837m 530.05
33 256.8  85.8938m 138.621 134  1.00420k  84.5720m 533.912
34 264.2  85.8810m 142.595 135  1.01160k  84.5623m 537.787
35 271.6  85.8720m 146.574 136  1.01900k  84.5489m 541.636
36 279  85.8609m 150.548 137  1.02640k  84.5345m 545.479
37 286.4  85.8499m 154.521 138  1.03380k  84.5232m 549.34
38 293.8  85.8377m 158.491 139  1.04120k  84.5119m 553.2
39 301.2  85.8252m 162.46 140  1.04860k  84.5018m 557.066
40 308.6  85.8143m 166.431 141  1.05600k  84.4878m 560.906
41 316  85.8022m 170.398 142  1.06340k  84.4758m 564.758
42 323.4  85.7921m 174.368 143  1.07080k  84.4640m 568.61
43 330.8  85.7794m 178.332 144  1.07820k  84.4529m 572.466
44 338.2  85.7677m 182.297 145  1.08560k  84.4415m 576.319
45 345.6  85.7561m 186.261 146  1.09300k  84.4292m 580.164
46 353  85.7419m 190.219 147  1.10040k  84.4183m 584.019
47 360.4  85.7321m 194.185 148  1.10780k  84.4068m 587.867
48 367.8  85.7188m 198.141 149  1.11520k  84.3953m 591.715
49 375.2  85.7060m 202.099 150  1.12260k  84.3848m 595.57
50 382.6  85.6932m 206.054 151  1.13000k  84.3714m 599.402
51 390  85.6797m 210.007 152  1.13740k  84.3626m 603.266
52 397.4  85.6676m 213.963 153  1.14480k  84.3516m 607.114
53 404.8  85.6551m 217.916 154  1.15220k  84.3414m 610.965
54 412.2  85.6428m 221.868 155  1.15960k  84.3274m 614.789
55 419.6  85.6285m 225.814 156  1.16700k  84.3176m 618.642
56 427  85.6149m 229.761 157  1.17440k  84.3075m 622.491
57 434.4  85.6012m 233.706 158  1.18180k  84.2955m 626.326
58 441.8  85.5877m 237.651 159  1.18920k  84.2888m 630.2
59 449.2  85.5746m 241.595 160  1.19660k  84.2717m 633.994
60 456.6  85.5613m 245.538 161  1.20400k  84.2645m 637.861
61 464  85.5463m 249.474 162  1.21140k  84.2536m 641.7
62 471.4  85.5341m 253.418 163  1.21880k  84.2441m 645.549
63 478.8  85.5203m 257.356 164  1.22620k  84.2317m 649.375
64 486.2  85.5073m 261.294 165  1.23360k  84.2233m 653.229
65 493.6  85.4925m 265.226 166  1.24100k  84.2147m 657.083
66 501  85.4790m 269.161 167  1.24840k  84.2092m 660.958
67 508.4  85.4647m 273.092 168  1.25580k  84.1940m 664.759
68 515.8  85.4518m 277.026 169  1.26320k  84.1833m 668.594
69 523.2  85.4367m 280.952 170  1.27060k  84.1725m 672.425
70 530.6  85.4230m 284.882 171  1.27800k  84.1618m 676.258
71 538  85.4107m 288.814 172  1.28540k  84.1531m 680.103
72 545.4  85.3951m 292.734 173  1.29280k  84.1413m 683.925
73 552.8  85.3803m 296.656 174  1.30020k  84.1325m 687.769
74 560.2  85.3674m 300.583 175  1.30760k  84.1189m 691.573
75 567.6  85.3530m 304.503 176  1.31500k  84.1124m 695.435
76 575  85.3387m 308.422 177  1.32240k  84.1021m 699.263
77 582.4  85.3233m 312.337 178  1.32980k  84.0956m 703.124
78 589.8  85.3119m 316.264 179  1.33720k  84.0837m 706.936
79 597.2  85.2951m 320.171 180  1.34460k  84.0754m 710.781
80 604.6  85.2826m 324.092 181  1.35200k  84.0706m 714.651
81 612  85.2689m 328.007 182  1.35940k  84.0573m 718.452
82 619.4  85.2549m 331.92 183  1.36680k  84.0462m 722.271
83 626.8  85.2421m 335.836 184  1.37420k  84.0393m 726.123
84 634.2  85.2278m 339.745 185  1.38160k  84.0307m 729.96
85 641.6  85.2135m 343.653 186  1.38900k  84.0197m 733.776
86 649  85.2017m 347.57 187  1.39640k  84.0105m 737.606
87 656.4  85.1860m 351.47 188  1.40380k  83.9996m 741.419
88 663.8  85.1726m 355.378 189  1.41120k  83.9912m 745.253
89 671.2  85.1575m 359.277 190  1.41860k  83.9824m 749.084
90 678.6  85.1443m 363.184 191  1.42600k  83.9728m 752.907
91 686  85.1309m 367.087 192  1.43340k  83.9637m 756.735
92 693.4  85.1157m 370.982 193  1.44080k  83.9598m 760.607
93 700.8  85.1035m 374.889 194  1.44820k  83.9497m 764.424
94 708.2  85.0902m 378.79 195  1.45560k  83.9398m 768.24
95 715.6  85.0751m 382.682 196  1.46300k  83.9291m 772.048
96 723  85.0619m 386.581 197  1.47040k  83.9226m 775.895
97 730.4  85.0481m 390.475 198  1.47780k  83.9142m 779.724
98 737.8  85.0340m 394.367 199  1.48520k  83.9049m 783.542
99 745.2  85.0215m 398.266 200  1.49260k  83.8975m 787.377
100 752.6  85.0052m 402.145 201  1.50000k  83.8865m 791.18
101 760  84.9945m 406.05 　 　 　 　
Table 7 Z-axis Detailed frequency data of inductance Ls and reactance
 
Y-axis inductance Ls, reactance Z measurement
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 83.2840m  1.50000k  87.3871m 34.8
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
11.0058 20 785.438  1.50000k
Table 8 Y-axis inductance Ls, reactance Z data
 
Y-axis inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  87.3409m 11.0058 102 767.4  84.3889m 407.136
2 27.4  87.3528m 15.0622 103 774.8  84.3708m 410.974
3 34.8  87.3871m 19.1267 104 782.2  84.3530m 414.811
4 42.2  87.3696m 23.1839 105 789.6  84.3365m 418.655
5 49.6  87.2379m 27.2046 106 797  84.3198m 422.494
6 57  87.2579m 31.2664 107 804.4  84.3033m 426.334
7 64.4  87.2522m 35.3214 108 811.8  84.2874m 430.175
8 71.8  87.2210m 39.3643 109 819.2  84.2709m 434.012
9 79.2  87.2004m 43.4096 110 826.6  84.2551m 437.85
10 86.6  87.1724m 47.4493 111 834  84.2397m 441.689
11 94  87.1471m 51.4881 112 841.4  84.2225m 445.518
12 101.4  87.1141m 55.5198 113 848.8  84.2083m 449.361
13 108.8  87.0900m 59.5545 114 856.2  84.1933m 453.198
14 116.2  87.0526m 63.5775 115 863.6  84.1786m 457.035
15 123.6  87.0247m 67.6046 116 871  84.1627m 460.864
16 131  86.9872m 71.6213 117 878.4  84.1475m 464.697
17 138.4  86.9604m 75.6442 118 885.8  84.1336m 468.534
18 145.8  86.9168m 79.6486 119 893.2  84.1195m 472.37
19 153.2  86.8861m 83.6621 120 900.6  84.1056m 476.204
20 160.6  86.8547m 87.6711 121 908  84.0905m 480.031
21 168  86.8185m 91.6734 122 915.4  84.0774m 483.868
22 175.4  86.7832m 95.6727 123 922.8  84.0628m 487.695
23 182.8  86.7407m 99.6607 124 930.2  84.0506m 491.535
24 190.2  86.7074m 103.656 125 937.6  84.0357m 495.358
25 197.6  86.6698m 107.643 126 945  84.0222m 499.187
26 205  86.6315m 111.625 127 952.4  84.0076m 503.009
27 212.4  86.5905m 115.601 128 959.8  83.9962m 506.849
28 219.8  86.5558m 119.581 129 967.2  83.9838m 510.682
29 227.2  86.5152m 123.55 130 974.6  83.9708m 514.51
30 234.6  86.4768m 127.518 131 982  83.9577m 518.336
31 242  86.4351m 131.478 132 989.4  83.9454m 522.166
32 249.4  86.3992m 135.443 133 996.8  83.9335m 525.997
33 256.8  86.3598m 139.399 134  1.00420k  83.9216m 529.826
34 264.2  86.3202m 143.351 135  1.01160k  83.9086m 533.649
35 271.6  86.2820m 147.302 136  1.01900k  83.8970m 537.478
36 279  86.2438m 151.249 137  1.02640k  83.8854m 541.307
37 286.4  86.2042m 155.19 138  1.03380k  83.8734m 545.132
38 293.8  86.1658m 159.13 139  1.04120k  83.8612m 548.955
39 301.2  86.1258m 163.063 140  1.04860k  83.8509m 552.788
40 308.6  86.0872m 166.996 141  1.05600k  83.8381m 556.605
41 316  86.0483m 170.924 142  1.06340k  83.8267m 560.429
42 323.4  86.0101m 174.85 143  1.07080k  83.8150m 564.251
43 330.8  85.9733m 178.775 144  1.07820k  83.8039m 568.076
44 338.2  85.9377m 182.699 145  1.08560k  83.7927m 571.898
45 345.6  85.8990m 186.614 146  1.09300k  83.7819m 575.723
46 353  85.8611m 190.526 147  1.10040k  83.7706m 579.543
47 360.4  85.8253m 194.44 148  1.10780k  83.7607m 583.372
48 367.8  85.7890m 198.349 149  1.11520k  83.7499m 587.193
49 375.2  85.7540m 202.258 150  1.12260k  83.7383m 591.008
50 382.6  85.7181m 206.162 151  1.13000k  83.7290m 594.838
51 390  85.6829m 210.064 152  1.13740k  83.7181m 598.656
52 397.4  85.6496m 213.967 153  1.14480k  83.7078m 602.477
53 404.8  85.6143m 217.863 154  1.15220k  83.6976m 606.298
54 412.2  85.5798m 221.757 155  1.15960k  83.6859m 610.107
55 419.6  85.5474m 225.653 156  1.16700k  83.6775m 613.939
56 427  85.5148m 229.546 157  1.17440k  83.6664m 617.751
57 434.4  85.4819m 233.435 158  1.18180k  83.6560m 621.566
58 441.8  85.4480m 237.318 159  1.18920k  83.6464m 625.387
59 449.2  85.4177m 241.208 160  1.19660k  83.6357m 629.198
60 456.6  85.3861m 245.092 161  1.20400k  83.6254m 633.012
61 464  85.3539m 248.971 162  1.21140k  83.6159m 636.83
62 471.4  85.3242m 252.854 163  1.21880k  83.6059m 640.645
63 478.8  85.2935m 256.732 164  1.22620k  83.5974m 644.469
64 486.2  85.2630m 260.607 165  1.23360k  83.5870m 648.278
65 493.6  85.2345m 264.486 166  1.24100k  83.5768m 652.088
66 501  85.2049m 268.358 167  1.24840k  83.5693m 655.918
67 508.4  85.1762m 272.231 168  1.25580k  83.5596m 659.73
68 515.8  85.1478m 276.102 169  1.26320k  83.5463m 663.512
69 523.2  85.1187m 279.967 170  1.27060k  83.5407m 667.355
70 530.6  85.0911m 283.836 171  1.27800k  83.5320m 671.171
71 538  85.0648m 287.706 172  1.28540k  83.5231m 674.987
72 545.4  85.0361m 291.565 173  1.29280k  83.5129m 678.79
73 552.8  85.0118m 295.437 174  1.30020k  83.5036m 682.6
74 560.2  84.9841m 299.295 175  1.30760k  83.4959m 686.422
75 567.6  84.9577m 303.155 176  1.31500k  83.4877m 690.239
76 575  84.9316m 307.013 177  1.32240k  83.4788m 694.05
77 582.4  84.9065m 310.873 178  1.32980k  83.4723m 697.879
78 589.8  84.8824m 314.734 179  1.33720k  83.4622m 701.679
79 597.2  84.8592m 318.596 180  1.34460k  83.4520m 705.476
80 604.6  84.8359m 322.456 181  1.35200k  83.4454m 709.303
81 612  84.8117m 326.31 182  1.35940k  83.4372m 713.116
82 619.4  84.7883m 330.165 183  1.36680k  83.4282m 716.922
83 626.8  84.7660m 334.022 184  1.37420k  83.4196m 720.729
84 634.2  84.7430m 337.874 185  1.38160k  83.4116m 724.541
85 641.6  84.7220m 341.732 186  1.38900k  83.4041m 728.357
86 649  84.7000m 345.584 187  1.39640k  83.3959m 732.166
87 656.4  84.6787m 349.437 188  1.40380k  83.3875m 735.972
88 663.8  84.6579m 353.29 189  1.41120k  83.3790m 739.777
89 671.2  84.6360m 357.137 190  1.41860k  83.3729m 743.601
90 678.6  84.6162m 360.99 191  1.42600k  83.3627m 747.39
91 686  84.5949m 364.835 192  1.43340k  83.3543m 751.193
92 693.4  84.5756m 368.687 193  1.44080k  83.3453m 754.99
93 700.8  84.5564m 372.537 194  1.44820k  83.3416m 758.835
94 708.2  84.5359m 376.38 195  1.45560k  83.3287m 762.595
95 715.6  84.5158m 380.223 196  1.46300k  83.3240m 766.429
96 723  84.4973m 384.07 197  1.47040k  83.3155m 770.227
97 730.4  84.4786m 387.916 198  1.47780k  83.3087m 774.041
98 737.8  84.4612m 391.766 199  1.48520k  83.2991m 777.827
99 745.2  84.4416m 395.604 200  1.49260k  83.2925m 781.641
100 752.6  84.4229m 399.444 201  1.50000k  83.2840m 785.438
101 760  84.4059m 403.29 　 　 　 　
Table 9 Y-axis Detailed frequency data of inductance Ls and reactance
 
Conclusion
The magnetic field and electrical performance of the product meet the requirements of the corresponding technical parameters. The final performance of the product is subject to this document.

 

 

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