Quality Inspection Report of 2DXHC7-100 Two-dimensional Helmholtz coil

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2DXHC7-100 Two-dimensional Helmholtz coil 1 2DXHC7-100 Two-dimensional Helmholtz coil 2 2DXHC7-100 Two-dimensional Helmholtz coil 3

 

Overall Dimensions: 300mm(L) x 210mm(W) x 310mm(H)
Coil spacing
X Axial: 79mm
Y Axial: 30mm
Weight: 15.3kg

 

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: 2DXHC7-100
Test time: Nov. 13, 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
8.0℃ 8.0℃ 4M 0~30000nT
Table 1 Measurement environment data
　
Magnetic field parameter test
    1. Using the device
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
Axis Display current (A) Display voltage Voltage (V) Magnetic field
strength（Gs）
X 1 - 22.297
X 2 - 44.554
X 3 - 66.852
X 4 - 89.135
X 5 - 111.405
Y 1 - 22.156
Y 2 - 44.348
Y 3 - 66.512
Y 4 - 88.641
Y 5 - 110.437
Table 2 Magnetic field strength data
 
Magnetic field uniformity
Axis Area Current Max Min Uniformity Note
X Sφ35mm 5A 111.240Gs 110.917Gs -0.44% 　
Y Sφ35mm 5A 110.915Gs 110.750Gs 0.43% 　
Table 3 Uniformity data
　
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
Axis Product temperature Measuring resistance ResistanceR@20℃ ResistanceR@85℃
X 8.0℃ 5.110Ω 5.409Ω 7.026Ω
Y 8.0℃ 1.670Ω 1.768Ω 2.296Ω
Table 4 Resistance R data
　
X-axis Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 83.2044m 872.6  83.4719m 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
11.6446 20 522.875  1.00000k
Table 5 X-axis inductance Ls and reactance Z data
　
X-axis Inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  83.4719m 11.6446 102 514.9  83.2534m 269.407
2 24.9  83.4394m 14.0012 103 519.8  83.2527m 271.968
3 29.8  83.4411m 16.4248 104 524.7  83.2520m 274.529
4 34.7  83.4190m 18.881 105 529.6  83.2514m 277.089
5 39.6  83.3945m 21.3609 106 534.5  83.2507m 279.65
6 44.5  83.3869m 23.8617 107 539.4  83.2495m 282.209
7 49.4  83.3772m 26.3738 108 544.3  83.2492m 284.77
8 54.3  83.3770m 28.8977 109 549.2  83.2485m 287.331
9 59.2  83.3779m 31.4284 110 554.1  83.2472m 289.889
10 64.1  83.3690m 33.9614 111 559  83.2466m 292.45
11 69  83.3642m 36.4998 112 563.9  83.2459m 295.01
12 73.9  83.3586m 39.0411 113 568.8  83.2450m 297.569
13 78.8  83.3548m 41.5854 114 573.7  83.2435m 300.127
14 83.7  83.3510m 44.1319 115 578.6  83.2430m 302.687
15 88.6  83.3475m 46.6803 116 583.5  83.2422m 305.247
16 93.5  83.3427m 49.2294 117 588.4  83.2411m 307.806
17 98.4  83.3362m 51.7784 118 593.3  83.2407m 310.367
18 103.3  83.3335m 54.3309 119 598.2  83.2396m 312.925
19 108.2  83.3300m 56.8836 120 603.1  83.2366m 315.477
20 113.1  83.3264m 59.437 121 608  83.2355m 318.035
21 118  83.3236m 61.9915 122 612.9  83.2356m 320.598
22 122.9  83.3223m 64.5478 123 617.8  83.2344m 323.155
23 127.8  83.3200m 67.1038 124 622.7  83.2335m 325.715
24 132.7  83.3177m 69.6602 125 627.6  83.2330m 328.275
25 137.6  83.3159m 72.2174 126 632.5  83.2320m 330.833
26 142.5  83.3137m 74.7746 127 637.4  83.2316m 333.394
27 147.4  83.3111m 77.3317 128 642.3  83.2305m 335.952
28 152.3  83.3094m 79.8898 129 647.2  83.2297m 338.511
29 157.2  83.3079m 82.4483 130 652.1  83.2294m 341.073
30 162.1  83.3060m 85.0067 131 657  83.2288m 343.632
31 167  83.3044m 87.5654 132 661.9  83.2286m 346.194
32 171.9  83.3042m 90.1257 133 666.8  83.2278m 348.753
33 176.8  83.3035m 92.6858 134 671.7  83.2266m 351.31
34 181.7  83.3018m 95.245 135 676.6  83.2259m 353.869
35 186.6  83.3010m 97.8054 136 681.5  83.2250m 356.428
36 191.5  83.2984m 100.364 137 686.4  83.2244m 358.987
37 196.4  83.2967m 102.923 138 691.3  83.2237m 361.546
38 201.3  83.2951m 105.483 139 696.2  83.2230m 364.106
39 206.2  83.2942m 108.043 140 701.1  83.2224m 366.665
40 211.1  83.2928m 110.603 141 706  83.2217m 369.224
41 216  83.2915m 113.163 142 710.9  83.2212m 371.784
42 220.9  83.2900m 115.723 143 715.8  83.2201m 374.341
43 225.8  83.2892m 118.284 144 720.7  83.2197m 376.902
44 230.7  83.2877m 120.844 145 725.6  83.2192m 379.461
45 235.6  83.2866m 123.404 146 730.5  83.2186m 382.021
46 240.5  83.2859m 125.966 147 735.4  83.2178m 384.579
47 245.4  83.2845m 128.526 148 740.3  83.2171m 387.138
48 250.3  83.2829m 131.085 149 745.2  83.2167m 389.698
49 255.2  83.2827m 133.648 150 750.1  83.2165m 392.259
50 260.1  83.2821m 136.209 151 755  83.2155m 394.816
51 265  83.2816m 138.77 152 759.9  83.2152m 397.377
52 269.9  83.2807m 141.331 153 764.8  83.2140m 399.933
53 274.8  83.2797m 143.892 154 769.7  83.2135m 402.492
54 279.7  83.2793m 146.454 155 774.6  83.2130m 405.052
55 284.6  83.2787m 149.016 156 779.5  83.2126m 407.612
56 289.5  83.2783m 151.577 157 784.4  83.2118m 410.17
57 294.4  83.2772m 154.138 158 789.3  83.2113m 412.729
58 299.3  83.2767m 156.7 159 794.2  83.2111m 415.29
59 304.2  83.2759m 159.261 160 799.1  83.2099m 417.846
60 309.1  83.2748m 161.822 161 804  83.2099m 420.408
61 314  83.2743m 164.383 162 808.9  83.2092m 422.966
62 318.9  83.2736m 166.945 163 813.8  83.2086m 425.525
63 323.8  83.2733m 169.507 164 818.7  83.2077m 428.082
64 328.7  83.2726m 172.068 165 823.6  83.2074m 430.642
65 333.6  83.2724m 174.63 166 828.5  83.2069m 433.201
66 338.5  83.2713m 177.191 167 833.4  83.2062m 435.76
67 343.4  83.2708m 179.753 168 838.3  83.2063m 438.321
68 348.3  83.2707m 182.315 169 843.2  83.2058m 440.881
69 353.2  83.2706m 184.878 170 848.1  83.2053m 443.44
70 358.1  83.2692m 187.438 171 853  83.2046m 445.998
71 363  83.2691m 190 172 857.9  83.2047m 448.56
72 367.9  83.2692m 192.564 173 862.8  83.2049m 451.123
73 372.8  83.2682m 195.124 174 867.7  83.2047m 453.684
74 377.7  83.2682m 197.687 175 872.6  83.2044m 456.244
75 382.6  83.2678m 200.249 176 877.5  83.2046m 458.807
76 387.5  83.2670m 202.81 177 882.4  83.2045m 461.368
77 392.4  83.2669m 205.373 178 887.3  83.2047m 463.931
78 397.3  83.2661m 207.934 179 892.2  83.2047m 466.493
79 402.2  83.2658m 210.496 180 897.1  83.2051m 469.056
80 407.1  83.2654m 213.058 181 902  83.2048m 471.616
81 412  83.2650m 215.62 182 906.9  83.2049m 474.179
82 416.9  83.2643m 218.181 183 911.8  83.2052m 476.742
83 421.8  83.2634m 220.741 184 916.7  83.2053m 479.305
84 426.7  83.2630m 223.303 185 921.6  83.2058m 481.869
85 431.6  83.2625m 225.865 186 926.5  83.2055m 484.429
86 436.5  83.2616m 228.425 187 931.4  83.2059m 486.993
87 441.4  83.2611m 230.987 188 936.3  83.2059m 489.555
88 446.3  83.2606m 233.548 189 941.2  83.2060m 492.118
89 451.2  83.2601m 236.11 190 946.1  83.2063m 494.681
90 456.1  83.2598m 238.672 191 951  83.2068m 497.246
91 461  83.2593m 241.234 192 955.9  83.2073m 499.811
92 465.9  83.2589m 243.795 193 960.8  83.2068m 502.369
93 470.8  83.2580m 246.356 194 965.7  83.2071m 504.933
94 475.7  83.2575m 248.917 195 970.6  83.2071m 507.495
95 480.6  83.2569m 251.478 196 975.5  83.2074m 510.059
96 485.5  83.2568m 254.041 197 980.4  83.2079m 512.624
97 490.4  83.2564m 256.602 198 985.3  83.2079m 515.186
98 495.3  83.2555m 259.163 199 990.2  83.2085m 517.751
99 500.2  83.2555m 261.725 200 995.1  83.2089m 520.316
100 505.1  83.2545m 264.285 201  1.00000k  83.2085m 522.875
101 510  83.2539m 266.846 　 　 　 　
Table 6 X-axis Detailed frequency data of inductance Ls and reactance Z

 

Y-axis Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 12.8311m  1.00000k  12.8480m 29.8
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
2.29388 20 80.6473  1.00000k
Table 7 Y-axis inductance Ls and reactance Z data
　
Y-axis Inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  12.8475m 2.29388 102 514.9  12.8339m 41.5572
2 24.9  12.8403m 2.58651 103 519.8  12.8338m 41.952
3 29.8  12.8480m 2.90552 104 524.7  12.8338m 42.3468
4 34.7  12.8447m 3.23974 105 529.6  12.8338m 42.7418
5 39.6  12.8411m 3.58618 106 534.5  12.8338m 43.1365
6 44.5  12.8389m 3.94264 107 539.4  12.8338m 43.5313
7 49.4  12.8336m 4.3048 108 544.3  12.8336m 43.9257
8 54.3  12.8385m 4.67444 109 549.2  12.8336m 44.3205
9 59.2  12.8397m 5.04677 110 554.1  12.8336m 44.7156
10 64.1  12.8394m 5.42227 111 559  12.8336m 45.1102
11 69  12.8385m 5.80025 112 563.9  12.8335m 45.5049
12 73.9  12.8373m 6.18028 113 568.8  12.8335m 45.8999
13 78.8  12.8372m 6.56247 114 573.7  12.8335m 46.2948
14 83.7  12.8362m 6.94553 115 578.6  12.8335m 46.6895
15 88.6  12.8357m 7.32994 116 583.5  12.8335m 47.0845
16 93.5  12.8355m 7.71559 117 588.4  12.8334m 47.4791
17 98.4  12.8360m 8.10236 118 593.3  12.8335m 47.8743
18 103.3  12.8359m 8.48993 119 598.2  12.8334m 48.2688
19 108.2  12.8361m 8.87831 120 603.1  12.8335m 48.6641
20 113.1  12.8364m 9.26742 121 608  12.8334m 49.0589
21 118  12.8366m 9.65703 122 612.9  12.8334m 49.4537
22 122.9  12.8353m 10.0458 123 617.8  12.8334m 49.8486
23 127.8  12.8349m 10.4357 124 622.7  12.8334m 50.2435
24 132.7  12.8348m 10.8261 125 627.6  12.8333m 50.6382
25 137.6  12.8346m 11.2168 126 632.5  12.8333m 51.0331
26 142.5  12.8346m 11.608 127 637.4  12.8333m 51.4281
27 147.4  12.8344m 11.9991 128 642.3  12.8332m 51.8229
28 152.3  12.8348m 12.3912 129 647.2  12.8332m 52.2178
29 157.2  12.8349m 12.7831 130 652.1  12.8332m 52.6128
30 162.1  12.8349m 13.1752 131 657  12.8332m 53.0075
31 167  12.8351m 13.5677 132 661.9  12.8331m 53.402
32 171.9  12.8348m 13.9597 133 666.8  12.8331m 53.7971
33 176.8  12.8346m 14.3521 134 671.7  12.8330m 54.1918
34 181.7  12.8346m 14.7448 135 676.6  12.8331m 54.5869
35 186.6  12.8344m 15.1374 136 681.5  12.8330m 54.9817
36 191.5  12.8342m 15.5302 137 686.4  12.8330m 55.3766
37 196.4  12.8341m 15.9232 138 691.3  12.8329m 55.7713
38 201.3  12.8340m 16.3162 139 696.2  12.8330m 56.1664
39 206.2  12.8339m 16.7092 140 701.1  12.8329m 56.5612
40 211.1  12.8339m 17.1026 141 706  12.8328m 56.9559
41 216  12.8338m 17.4959 142 710.9  12.8329m 57.3509
42 220.9  12.8338m 17.8894 143 715.8  12.8328m 57.7456
43 225.8  12.8337m 18.2829 144 720.7  12.8328m 58.1406
44 230.7  12.8337m 18.6765 145 725.6  12.8327m 58.5354
45 235.6  12.8338m 19.0702 146 730.5  12.8328m 58.9304
46 240.5  12.8338m 19.464 147 735.4  12.8327m 59.3254
47 245.4  12.8338m 19.8578 148 740.3  12.8327m 59.7202
48 250.3  12.8339m 20.2518 149 745.2  12.8326m 60.1149
49 255.2  12.8340m 20.6458 150 750.1  12.8326m 60.5098
50 260.1  12.8340m 21.0399 151 755  12.8325m 60.9044
51 265  12.8340m 21.4339 152 759.9  12.8325m 61.2994
52 269.9  12.8341m 21.828 153 764.8  12.8325m 61.6944
53 274.8  12.8340m 22.222 154 769.7  12.8324m 62.0889
54 279.7  12.8342m 22.6164 155 774.6  12.8324m 62.4837
55 284.6  12.8341m 23.0105 156 779.5  12.8324m 62.8787
56 289.5  12.8342m 23.4048 157 784.4  12.8324m 63.2736
57 294.4  12.8341m 23.7989 158 789.3  12.8323m 63.6683
58 299.3  12.8341m 24.1931 159 794.2  12.8323m 64.0633
59 304.2  12.8337m 24.5867 160 799.1  12.8322m 64.4579
60 309.1  12.8336m 24.9808 161 804  12.8322m 64.8529
61 314  12.8337m 25.3753 162 808.9  12.8321m 65.2476
62 318.9  12.8336m 25.7695 163 813.8  12.8321m 65.6424
63 323.8  12.8335m 26.1637 164 818.7  12.8321m 66.0373
64 328.7  12.8336m 26.5582 165 823.6  12.8320m 66.432
65 333.6  12.8336m 26.9527 166 828.5  12.8320m 66.8269
66 338.5  12.8336m 27.3472 167 833.4  12.8320m 67.2217
67 343.4  12.8335m 27.7414 168 838.3  12.8319m 67.6164
68 348.3  12.8334m 28.1357 169 843.2  12.8319m 68.0113
69 353.2  12.8334m 28.5301 170 848.1  12.8319m 68.4061
70 358.1  12.8335m 28.925 171 853  12.8319m 68.8011
71 363  12.8334m 29.3193 172 857.9  12.8318m 69.1957
72 367.9  12.8334m 29.7139 173 862.8  12.8318m 69.5907
73 372.8  12.8334m 30.1085 174 867.7  12.8317m 69.9853
74 377.7  12.8335m 30.5031 175 872.6  12.8317m 70.3801
75 382.6  12.8334m 30.8976 176 877.5  12.8317m 70.7751
76 387.5  12.8334m 31.2922 177 882.4  12.8316m 71.1696
77 392.4  12.8344m 31.6892 178 887.3  12.8316m 71.5646
78 397.3  12.8343m 32.0836 179 892.2  12.8316m 71.9598
79 402.2  12.8343m 32.4784 180 897.1  12.8316m 72.3546
80 407.1  12.8342m 32.8729 181 902  12.8315m 72.7493
81 412  12.8343m 33.2677 182 906.9  12.8315m 73.1443
82 416.9  12.8342m 33.6623 183 911.8  12.8315m 73.5391
83 421.8  12.8342m 34.057 184 916.7  12.8314m 73.9339
84 426.7  12.8342m 34.4516 185 921.6  12.8314m 74.3286
85 431.6  12.8342m 34.8464 186 926.5  12.8314m 74.7238
86 436.5  12.8342m 35.2412 187 931.4  12.8313m 75.1182
87 441.4  12.8341m 35.6357 188 936.3  12.8313m 75.5134
88 446.3  12.8341m 36.0305 189 941.2  12.8313m 75.9079
89 451.2  12.8341m 36.4253 190 946.1  12.8313m 76.3029
90 456.1  12.8342m 36.8202 191 951  12.8312m 76.6978
91 461  12.8341m 37.2146 192 955.9  12.8312m 77.0928
92 465.9  12.8341m 37.6095 193 960.8  12.8314m 77.4886
93 470.8  12.8341m 38.0044 194 965.7  12.8314m 77.8839
94 475.7  12.8340m 38.3988 195 970.6  12.8314m 78.2785
95 480.6  12.8340m 38.7936 196 975.5  12.8313m 78.6735
96 485.5  12.8339m 39.1883 197 980.4  12.8313m 79.0682
97 490.4  12.8338m 39.5829 198 985.3  12.8313m 79.4631
98 495.3  12.8338m 39.9777 199 990.2  12.8312m 79.8579
99 500.2  12.8339m 40.3728 200 995.1  12.8312m 80.2527
100 505.1  12.8339m 40.7676 201  1.00000k  12.8311m 80.6473
101 510  12.8339m 41.1625 　 　 　 　
Table 8 Y-axis Detailed frequency data of inductance Ls and reactance Z

 

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