DXHC60-100 Big One-dimensional Helmholtz Coil: Quality Inspection Report

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DXHC60-100 Big One-dimensional Helmholtz Coil 1 DXHC60-100 Big One-dimensional Helmholtz Coil 2 DXHC60-100 Big One-dimensional Helmholtz Coil 3

 

Overall Dimensions: 1327mm x 735mm x 1335mm

 

 

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:
One-dimensional Helmholtz Coil		 Product model: DXHC60-100
Test time: Apr. 09, 2025
    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
12.0℃ 12.0℃ 　 0~30000nT
Table 1: Measurement environment data
　
Magnetic field parameter test
    1. Using the device
DX-F2031 power supply
DX-180 Gauss Meter
DXACP Power Amplifier
    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 (V) Magnetic field
strength（Gs）
1 5 - 20.22
2 10 - 38.26
3 15 - 56.48
4 20 - 74.43
5 25 - 92.70
6 30 - 110.86
7 27.2 - 100.70
Table 2 Magnetic field strength data
 
Magnetic field uniformity
No. Area Current Center Max Min Uniformity
1 Sφ500mm 27.2A 110.86Gs 110.86Gs 107.64Gs -2.90%
Table 3 Uniformity data
　
Electrical parameter test
    1. Using equipment
Digital multimeter
Impedance analyzer
    2. Test method
The digital instrument with a bridge circuit and voltammetry is used for measurement. The measurement results are shown in the table below.
Resistance R measurement
Environment temp Product temperature Measuring resistance ResistanceR@20℃ ResistanceR@85℃
12.0℃ 12.0℃ 2.640Ω 2.741Ω 3.560Ω
Table 4 Resistance R data
　
Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 24.3921m  1.00000k  49.1053m 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
9.94637 20 172.261  1.00000k
Table 5 inductance Ls and reactance Z data
　
Inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  49.1053m 9.94637 102 514.9  30.2725m 105.937
2 24.9  46.3024m 10.8237 103 519.8  30.2003m 106.735
3 29.8  44.4939m 11.7275 104 524.7  30.1284m 107.531
4 34.7  43.2361m 12.6592 105 529.6  30.0567m 108.324
5 39.6  42.2893m 13.6099 106 534.5  29.9853m 109.114
6 44.5  41.5733m 14.5888 107 539.4  29.9142m 109.9
7 49.4  40.9891m 15.5804 108 544.3  29.8447m 110.689
8 54.3  40.5306m 16.5968 109 549.2  29.7740m 111.469
9 59.2  40.1237m 17.618 110 554.1  29.7038m 112.247
10 64.1  39.7865m 18.6539 111 559  29.6337m 113.021
11 69  39.4814m 19.694 112 563.9  29.5638m 113.792
12 73.9  39.2102m 20.7409 113 568.8  29.4944m 114.561
13 78.8  38.9716m 21.7953 114 573.7  29.4250m 115.327
14 83.7  38.7489m 22.8507 115 578.6  29.3562m 116.09
15 88.6  38.5452m 23.91 116 583.5  29.2872m 116.849
16 93.5  38.3550m 24.9701 117 588.4  29.2187m 117.606
17 98.4  38.1733m 26.0288 118 593.3  29.1506m 118.36
18 103.3  38.0050m 27.0907 119 598.2  29.0826m 119.111
19 108.2  37.8449m 28.152 120 603.1  29.0151m 119.86
20 113.1  37.6926m 29.2129 121 608  28.9477m 120.605
21 118  37.5464m 30.2727 122 612.9  28.8806m 121.348
22 122.9  37.4105m 31.3345 123 617.8  28.8138m 122.088
23 127.8  37.2742m 32.3911 124 622.7  28.7473m 122.825
24 132.7  37.1432m 33.4467 125 627.6  28.6809m 123.559
25 137.6  37.0159m 34.5 126 632.5  28.6149m 124.291
26 142.5  36.8921m 35.5512 127 637.4  28.5491m 125.02
27 147.4  36.7709m 36.5994 128 642.3  28.4835m 125.745
28 152.3  36.6529m 37.6455 129 647.2  28.4182m 126.468
29 157.2  36.5377m 38.6893 130 652.1  28.3531m 127.188
30 162.1  36.4246m 39.7301 131 657  28.2884m 127.906
31 167  36.3133m 40.768 132 661.9  28.2238m 128.621
32 171.9  36.2025m 41.8018 133 666.8  28.1596m 129.333
33 176.8  36.0953m 42.8343 134 671.7  28.0956m 130.042
34 181.7  35.9896m 43.8637 135 676.6  28.0318m 130.749
35 186.6  35.8853m 44.8898 136 681.5  27.9686m 131.454
36 191.5  35.7825m 45.913 137 686.4  27.9053m 132.155
37 196.4  35.6808m 46.9327 138 691.3  27.8423m 132.854
38 201.3  35.5804m 47.9495 139 696.2  27.7796m 133.55
39 206.2  35.4811m 48.963 140 701.1  27.7171m 134.244
40 211.1  35.3827m 49.973 141 706  27.6549m 134.935
41 216  35.2851m 50.9795 142 710.9  27.5932m 135.624
42 220.9  35.1884m 51.9826 143 715.8  27.5316m 136.31
43 225.8  35.0927m 52.9825 144 720.7  27.4701m 136.993
44 230.7  34.9978m 53.979 145 725.6  27.4090m 137.674
45 235.6  34.9036m 54.9719 146 730.5  27.3482m 138.353
46 240.5  34.8101m 55.9614 147 735.4  27.2876m 139.029
47 245.4  34.7172m 56.9473 148 740.3  27.2272m 139.702
48 250.3  34.6250m 57.9299 149 745.2  27.1672m 140.374
49 255.2  34.5337m 58.9092 150 750.1  27.1074m 141.042
50 260.1  34.4428m 59.8847 151 755  27.0478m 141.708
51 265  34.3526m 60.8569 152 759.9  26.9884m 142.372
52 269.9  34.2629m 61.8257 153 764.8  26.9294m 143.033
53 274.8  34.1740m 62.7912 154 769.7  26.8706m 143.692
54 279.7  34.0851m 63.7527 155 774.6  26.8121m 144.349
55 284.6  33.9970m 64.7109 156 779.5  26.7538m 145.003
56 289.5  33.9095m 65.6659 157 784.4  26.6958m 145.655
57 294.4  33.8222m 66.6171 158 789.3  26.6381m 146.305
58 299.3  33.7356m 67.5649 159 794.2  26.5805m 146.952
59 304.2  33.6497m 68.5103 160 799.1  26.5232m 147.596
60 309.1  33.5640m 69.4514 161 804  26.4663m 148.239
61 314  33.4788m 70.3891 162 808.9  26.4096m 148.88
62 318.9  33.3941m 71.3236 163 813.8  26.3531m 149.518
63 323.8  33.3098m 72.2547 164 818.7  26.2968m 150.154
64 328.7  33.2258m 73.182 165 823.6  26.2408m 150.788
65 333.6  33.1421m 74.1059 166 828.5  26.1851m 151.419
66 338.5  33.0588m 75.0262 167 833.4  26.1297m 152.049
67 343.4  32.9760m 75.9434 168 838.3  26.0744m 152.676
68 348.3  32.8934m 76.8569 169 843.2  26.0195m 153.301
69 353.2  32.8114m 77.7673 170 848.1  25.9647m 153.924
70 358.1  32.7295m 78.6741 171 853  25.9103m 154.544
71 363  32.6481m 79.5776 172 857.9  25.8560m 155.163
72 367.9  32.5670m 80.4776 173 862.8  25.8021m 155.779
73 372.8  32.4862m 81.374 174 867.7  25.7484m 156.394
74 377.7  32.4057m 82.2672 175 872.6  25.6949m 157.006
75 382.6  32.3257m 83.1572 176 877.5  25.6417m 157.617
76 387.5  32.2458m 84.0437 177 882.4  25.5887m 158.225
77 392.4  32.1661m 84.9264 178 887.3  25.5360m 158.831
78 397.3  32.0870m 85.8064 179 892.2  25.4837m 159.436
79 402.2  32.0080m 86.6826 180 897.1  25.4314m 160.038
80 407.1  31.9294m 87.5556 181 902  25.3795m 160.639
81 412  31.8510m 88.425 182 906.9  25.3278m 161.237
82 416.9  31.7731m 89.2916 183 911.8  25.2763m 161.834
83 421.8  31.6953m 90.1545 184 916.7  25.2251m 162.428
84 426.7  31.6182m 91.0149 185 921.6  25.1741m 163.021
85 431.6  31.5409m 91.8709 186 926.5  25.1234m 163.612
86 436.5  31.4640m 92.7239 187 931.4  25.0729m 164.201
87 441.4  31.3873m 93.5736 188 936.3  25.0227m 164.788
88 446.3  31.3110m 94.42 189 941.2  24.9727m 165.373
89 451.2  31.2351m 95.2636 190 946.1  24.9229m 165.957
90 456.1  31.1594m 96.1037 191 951  24.8734m 166.538
91 461  31.0839m 96.9404 192 955.9  24.8241m 167.118
92 465.9  31.0088m 97.7742 193 960.8  24.7759m 167.701
93 470.8  30.9338m 98.6045 194 965.7  24.7270m 168.277
94 475.7  30.8595m 99.4326 195 970.6  24.6785m 168.851
95 480.6  30.7852m 100.257 196 975.5  24.6302m 169.424
96 485.5  30.7111m 101.077 197 980.4  24.5820m 169.994
97 490.4  30.6373m 101.895 198 985.3  24.5342m 170.564
98 495.3  30.5637m 102.709 199 990.2  24.4867m 171.132
99 500.2  30.4908m 103.522 200 995.1  24.4392m 171.696
100 505.1  30.4178m 104.33 201  1.00000k  24.3921m 172.261
101 510  30.3450m 105.135 　 　 　 　
Table 6 Detailed frequency data of inductance Ls and reactance Z
               
    3. Temperature test
This product uses the following measurement methods:
a. Using magnetic field temperature rise measurement: given the limit working time and maximum temperature under the target magnetic field current required by the user.
b. Maximum current temperature rise measurement: Measure the ultimate working time and maximum temperature under the maximum safe current that the product can withstand
c. Measure the data on temperature, time and current of the entire coil. The measurement results are shown in the table below.
Temperature rise test
Current[A] Working time[min]  Temp[℃]
27.2 0 17.4
27.2 5 22.0
27.2 10 27.0
27.2 15 29.7
27.2 20 35.4
27.2 25 39.6
Table 7 Relationship data between temperature, working time and current
 
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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Dexinmag® • 2025

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