2DXHC30-200 2D Helmholtz coil: Quality Inspection Report

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Overall Dimensions: 652mm(L) x 860mm(W) x 840mm(H)
Weight: 172kg

 

 

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:
2D Helmholtz coil		 Product model: 2DXHC30-200
Test time: June 4th, 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
20.5℃ 20.5℃ 　 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
No. Display current (A) Display voltage Voltage (V) Magnetic field
strength（Gs）
X Axis 25 26.8 71.13
50 53.88 142.16
75 81.96 213.15
Z Axis 20 21.72 70.39
40 43.42 141.28
60 64.16 212.05
Table 2 Magnetic field strength data
　
Magnetic field uniformity
Air gap Area Current Center Max Min Uniformity
X Axis Sφ190mm 75A 213.15Gs 213.17Gs 212.08Gs -0.50%
Z Axis Sφ150mm 60A 212.03Gs 212.08Gs 210.75Gs -0.60%
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
No. Product temperature Measuring resistance ResistanceR@20℃ ResistanceR@85℃
X axis 20.5℃ 1.050Ω 1.048Ω 1.361Ω
Z axis 20.5℃ 1.040Ω 1.038Ω 1.348Ω
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]
 5.01915m  1.00000k  9.75319m 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
2.64818 20 34.1224  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  9.75319m 2.64818 102 514.9  5.74099m 19.8854
2 24.9  8.98196m 2.77602 103 519.8  5.73190m 20.0425
3 29.8  8.53265m 2.91123 104 524.7  5.72287m 20.1994
4 34.7  8.22127m 3.05098 105 529.6  5.71388m 20.356
5 39.6  8.00441m 3.19874 106 534.5  5.70500m 20.5124
6 44.5  7.83282m 3.3499 107 539.4  5.69613m 20.6684
7 49.4  7.69307m 3.50693 108 544.3  5.68710m 20.8233
8 54.3  7.59809m 3.672 109 549.2  5.67831m 20.9786
9 59.2  7.51359m 3.83902 110 554.1  5.66962m 21.1338
10 64.1  7.43533m 4.00964 111 559  5.66098m 21.2888
11 69  7.36981m 4.18364 112 563.9  5.65239m 21.4433
12 73.9  7.31110m 4.35993 113 568.8  5.64385m 21.5977
13 78.8  7.25557m 4.53678 114 573.7  5.63534m 21.7516
14 83.7  7.20648m 4.71614 115 578.6  5.62694m 21.9055
15 88.6  7.16180m 4.8969 116 583.5  5.61855m 22.059
16 93.5  7.12272m 5.07987 117 588.4  5.61021m 22.2122
17 98.4  7.08765m 5.26395 118 593.3  5.60194m 22.3652
18 103.3  7.05214m 5.44818 119 598.2  5.59366m 22.5177
19 108.2  7.01827m 5.63285 120 603.1  5.58548m 22.6702
20 113.1  6.98608m 5.81802 121 608  5.57728m 22.8222
21 118  6.95511m 6.00325 122 612.9  5.56919m 22.9741
22 122.9  6.92583m 6.1889 123 617.8  5.56112m 23.1257
23 127.8  6.89662m 6.37351 124 622.7  5.55312m 23.2772
24 132.7  6.86885m 6.55839 125 627.6  5.54511m 23.4281
25 137.6  6.84196m 6.74316 126 632.5  5.53719m 23.579
26 142.5  6.81594m 6.9278 127 637.4  5.52927m 23.7295
27 147.4  6.79101m 7.11247 128 642.3  5.52141m 23.8797
28 152.3  6.76731m 7.29754 129 647.2  5.51356m 24.0296
29 157.2  6.74447m 7.48276 130 652.1  5.50578m 24.1793
30 162.1  6.72200m 7.66734 131 657  5.49803m 24.3288
31 167  6.70005m 7.85159 132 661.9  5.49030m 24.4779
32 171.9  6.67874m 8.03526 133 666.8  5.48261m 24.6267
33 176.8  6.65753m 8.2186 134 671.7  5.47495m 24.7753
34 181.7  6.63678m 8.40159 135 676.6  5.46734m 24.9237
35 186.6  6.61652m 8.58423 136 681.5  5.45976m 25.0717
36 191.5  6.59667m 8.76651 137 686.4  5.45220m 25.2195
37 196.4  6.57717m 8.94833 138 691.3  5.44468m 25.367
38 201.3  6.55808m 9.12972 139 696.2  5.43718m 25.5142
39 206.2  6.53920m 9.31034 140 701.1  5.42971m 25.6611
40 211.1  6.52081m 9.49069 141 706  5.42232m 25.808
41 216  6.50270m 9.67051 142 710.9  5.41489m 25.9544
42 220.9  6.48484m 9.84981 143 715.8  5.40755m 26.1006
43 225.8  6.46704m 10.0282 144 720.7  5.40022m 26.2466
44 230.7  6.44971m 10.2066 145 725.6  5.39288m 26.3921
45 235.6  6.43266m 10.3845 146 730.5  5.38561m 26.5375
46 240.5  6.41590m 10.5621 147 735.4  5.37838m 26.6826
47 245.4  6.39939m 10.7392 148 740.3  5.37117m 26.8275
48 250.3  6.38316m 10.9159 149 745.2  5.36395m 26.9719
49 255.2  6.36726m 11.0923 150 750.1  5.35678m 27.1163
50 260.1  6.35162m 11.2682 151 755  5.34962m 27.2602
51 265  6.33619m 11.4437 152 759.9  5.34253m 27.4041
52 269.9  6.32086m 11.6185 153 764.8  5.33543m 27.5475
53 274.8  6.30583m 11.793 154 769.7  5.32838m 27.6908
54 279.7  6.29096m 11.967 155 774.6  5.32132m 27.8337
55 284.6  6.27629m 12.1407 156 779.5  5.31429m 27.9763
56 289.5  6.26180m 12.3138 157 784.4  5.30729m 28.1187
57 294.4  6.24748m 12.4865 158 789.3  5.30034m 28.261
58 299.3  6.23334m 12.6588 159 794.2  5.29332m 28.4025
59 304.2  6.21919m 12.83 160 799.1  5.28644m 28.5443
60 309.1  6.20535m 13.0014 161 804  5.27949m 28.6854
61 314  6.19175m 13.1725 162 808.9  5.27264m 28.8266
62 318.9  6.17826m 13.3431 163 813.8  5.26576m 28.9673
63 323.8  6.16500m 13.5135 164 818.7  5.25889m 29.1077
64 328.7  6.15180m 13.6832 165 823.6  5.25211m 29.2482
65 333.6  6.13880m 13.8527 166 828.5  5.24530m 29.3881
66 338.5  6.12597m 14.0218 167 833.4  5.23850m 29.5277
67 343.4  6.11327m 14.1905 168 838.3  5.23173m 29.667
68 348.3  6.10072m 14.3589 169 843.2  5.22499m 29.8062
69 353.2  6.08830m 14.5268 170 848.1  5.21830m 29.9453
70 358.1  6.07604m 14.6945 171 853  5.21159m 30.0838
71 363  6.06391m 14.8618 172 857.9  5.20490m 30.2222
72 367.9  6.05192m 15.0287 173 862.8  5.19826m 30.3604
73 372.8  6.04002m 15.1952 174 867.7  5.19161m 30.4982
74 377.7  6.02831m 15.3615 175 872.6  5.18497m 30.6357
75 382.6  6.01673m 15.5274 176 877.5  5.17838m 30.7731
76 387.5  6.00521m 15.6929 177 882.4  5.17180m 30.9101
77 392.4  5.99383m 15.858 178 887.3  5.16520m 31.0467
78 397.3  5.98255m 16.0228 179 892.2  5.15865m 31.1833
79 402.2  5.97140m 16.1873 180 897.1  5.15261m 31.3223
80 407.1  5.96037m 16.3515 181 902  5.14611m 31.4583
81 412  5.94942m 16.5153 182 906.9  5.13960m 31.594
82 416.9  5.93861m 16.6789 183 911.8  5.13313m 31.7295
83 421.8  5.92784m 16.8421 184 916.7  5.12667m 31.8648
84 426.7  5.91723m 17.005 185 921.6  5.12025m 31.9997
85 431.6  5.90675m 17.1677 186 926.5  5.11380m 32.1343
86 436.5  5.89634m 17.33 187 931.4  5.10739m 32.2687
87 441.4  5.88597m 17.4919 188 936.3  5.10100m 32.4029
88 446.3  5.87573m 17.6536 189 941.2  5.09462m 32.5367
89 451.2  5.86561m 17.815 190 946.1  5.08828m 32.6705
90 456.1  5.85554m 17.9761 191 951  5.08193m 32.8038
91 461  5.84557m 18.1369 192 955.9  5.07561m 32.9369
92 465.9  5.83568m 18.2973 193 960.8  5.06905m 33.0688
93 470.8  5.82586m 18.4574 194 965.7  5.06276m 33.2014
94 475.7  5.81614m 18.6173 195 970.6  5.05647m 33.3337
95 480.6  5.80649m 18.7768 196 975.5  5.05024m 33.4659
96 485.5  5.79690m 18.936 197 980.4  5.04398m 33.5976
97 490.4  5.78741m 19.0949 198 985.3  5.03775m 33.7292
98 495.3  5.77795m 19.2535 199 990.2  5.03155m 33.8606
99 500.2  5.76862m 19.412 200 995.1  5.02534m 33.9917
100 505.1  5.75934m 19.57 201  1.00000k  5.01915m 34.1224
101 510  5.75013m 19.7278 　 　 　 　
Table 6 X axis Detailed frequency data of inductance Ls and reactance Z

 

Z Axis Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 4.34781m  1.00000k  8.46684m 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
2.21152 20 28.9334  1.00000k
Table 7 Z axis inductance Ls and reactance Z data
Z Axis Inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  8.46684m 2.21152 102 514.9  4.80938m 16.4851
2 24.9  7.75887m 2.33056 103 519.8  4.80308m 16.6178
3 29.8  7.32760m 2.45092 104 524.7  4.79682m 16.7504
4 34.7  7.02740m 2.57312 105 529.6  4.79063m 16.8828
5 39.6  6.80982m 2.69862 106 534.5  4.78447m 17.015
6 44.5  6.64519m 2.8274 107 539.4  4.77840m 17.1471
7 49.4  6.51157m 2.95959 108 544.3  4.77217m 17.2782
8 54.3  6.41162m 3.09676 109 549.2  4.76614m 17.4098
9 59.2  6.32571m 3.23533 110 554.1  4.76022m 17.5415
10 64.1  6.24957m 3.37648 111 559  4.75432m 17.6729
11 69  6.18366m 3.51948 112 563.9  4.74847m 17.8042
12 73.9  6.12491m 3.66406 113 568.8  4.74271m 17.9354
13 78.8  6.07274m 3.81017 114 573.7  4.73691m 18.0662
14 83.7  6.02507m 3.95696 115 578.6  4.73123m 18.1971
15 88.6  5.98204m 4.10496 116 583.5  4.72553m 18.3277
16 93.5  5.94417m 4.2546 117 588.4  4.72000m 18.4585
17 98.4  5.90979m 4.40489 118 593.3  4.71556m 18.594
18 103.3  5.87566m 4.55507 119 598.2  4.70869m 18.7181
19 108.2  5.84380m 4.70591 120 603.1  4.70337m 18.8489
20 113.1  5.81378m 4.85705 121 608  4.69796m 18.979
21 118  5.78532m 5.00841 122 612.9  4.69251m 19.1086
22 122.9  5.75806m 5.15959 123 617.8  4.68715m 19.2383
23 127.8  5.73164m 5.31042 124 622.7  4.68186m 19.368
24 132.7  5.70647m 5.46127 125 627.6  4.67659m 19.4974
25 137.6  5.68236m 5.61209 126 632.5  4.67136m 19.6267
26 142.5  5.65913m 5.76279 127 637.4  4.66614m 19.7558
27 147.4  5.63695m 5.91353 128 642.3  4.66099m 19.8849
28 152.3  5.61581m 6.06447 129 647.2  4.65588m 20.0138
29 157.2  5.59564m 6.21565 130 652.1  4.65076m 20.1424
30 162.1  5.57589m 6.36635 131 657  4.64571m 20.271
31 167  5.55695m 6.51702 132 661.9  4.64070m 20.3995
32 171.9  5.53856m 6.66705 133 666.8  4.63566m 20.5276
33 176.8  5.52008m 6.81657 134 671.7  4.63072m 20.6559
34 181.7  5.50259m 6.96648 135 676.6  4.62580m 20.7839
35 186.6  5.48536m 7.11587 136 681.5  4.62089m 20.9118
36 191.5  5.46848m 7.26488 137 686.4  4.61599m 21.0394
37 196.4  5.45203m 7.41363 138 691.3  4.61118m 21.1672
38 201.3  5.43595m 7.56206 139 696.2  4.60635m 21.2946
39 206.2  5.42026m 7.71001 140 701.1  4.60157m 21.422
40 211.1  5.40492m 7.85765 141 706  4.59747m 21.5527
41 216  5.38989m 8.00496 142 710.9  4.59210m 21.6764
42 220.9  5.37513m 8.15186 143 715.8  4.58740m 21.8033
43 225.8  5.36074m 8.29856 144 720.7  4.58272m 21.9301
44 230.7  5.34664m 8.44494 145 725.6  4.57808m 22.0568
45 235.6  5.33282m 8.591 146 730.5  4.57346m 22.1833
46 240.5  5.31923m 8.73671 147 735.4  4.56888m 22.3098
47 245.4  5.30595m 8.88218 148 740.3  4.56431m 22.4361
48 250.3  5.29298m 9.02742 149 745.2  4.55975m 22.5622
49 255.2  5.28005m 9.17224 150 750.1  4.55522m 22.6882
50 260.1  5.26739m 9.31678 151 755  4.55073m 22.8141
51 265  5.25499m 9.46108 152 759.9  4.54628m 22.9399
52 269.9  5.24280m 9.60501 153 764.8  4.54185m 23.0656
53 274.8  5.23079m 9.74857 154 769.7  4.53743m 23.1911
54 279.7  5.21898m 9.89184 155 774.6  4.53300m 23.3163
55 284.6  5.20724m 10.0342 156 779.5  4.52863m 23.4416
56 289.5  5.19587m 10.1769 157 784.4  4.52426m 23.5666
57 294.4  5.18466m 10.3193 158 789.3  4.51990m 23.6914
58 299.3  5.17355m 10.4612 159 794.2  4.51557m 23.8162
59 304.2  5.16259m 10.6026 160 799.1  4.51127m 23.9409
60 309.1  5.15181m 10.744 161 804  4.50699m 24.0654
61 314  5.14125m 10.8852 162 808.9  4.50271m 24.1898
62 318.9  5.13085m 11.0262 163 813.8  4.49847m 24.3141
63 323.8  5.12051m 11.1667 164 818.7  4.49425m 24.4381
64 328.7  5.11044m 11.3073 165 823.6  4.49003m 24.5621
65 333.6  5.10050m 11.4475 166 828.5  4.48584m 24.686
66 338.5  5.09064m 11.5874 167 833.4  4.48167m 24.8097
67 343.4  5.08099m 11.7271 168 838.3  4.47749m 24.9332
68 348.3  5.07142m 11.8665 169 843.2  4.47334m 25.0566
69 353.2  5.06199m 12.0057 170 848.1  4.46922m 25.1799
70 358.1  5.05269m 12.1446 171 853  4.46511m 25.3031
71 363  5.04353m 12.2833 172 857.9  4.46102m 25.4261
72 367.9  5.03450m 12.4219 173 862.8  4.45690m 25.5489
73 372.8  5.02561m 12.5601 174 867.7  4.45285m 25.6717
74 377.7  5.01679m 12.6981 175 872.6  4.44882m 25.7944
75 382.6  5.00813m 12.836 176 877.5  4.44477m 25.9168
76 387.5  4.99961m 12.9737 177 882.4  4.44075m 26.0391
77 392.4  4.99112m 13.111 178 887.3  4.43676m 26.1614
78 397.3  4.98276m 13.2482 179 892.2  4.43277m 26.2835
79 402.2  4.97457m 13.3852 180 897.1  4.42878m 26.4054
80 407.1  4.96642m 13.522 181 902  4.42480m 26.5271
81 412  4.95838m 13.6586 182 906.9  4.42087m 26.6489
82 416.9  4.95042m 13.7949 183 911.8  4.41691m 26.7703
83 421.8  4.94261m 13.9312 184 916.7  4.41299m 26.8917
84 426.7  4.93487m 14.0672 185 921.6  4.40909m 27.0131
85 431.6  4.92720m 14.203 186 926.5  4.40520m 27.1342
86 436.5  4.91964m 14.3387 187 931.4  4.40131m 27.2552
87 441.4  4.91214m 14.4741 188 936.3  4.39744m 27.3761
88 446.3  4.90477m 14.6094 189 941.2  4.39356m 27.4967
89 451.2  4.89746m 14.7445 190 946.1  4.38969m 27.6172
90 456.1  4.89025m 14.8795 191 951  4.38587m 27.7377
91 461  4.88310m 15.0141 192 955.9  4.38204m 27.858
92 465.9  4.87605m 15.1488 193 960.8  4.37799m 27.9771
93 470.8  4.86906m 15.2832 194 965.7  4.37418m 28.0971
94 475.7  4.86218m 15.4175 195 970.6  4.37039m 28.217
95 480.6  4.85534m 15.5515 196 975.5  4.36660m 28.3367
96 485.5  4.84856m 15.6854 197 980.4  4.36283m 28.4564
97 490.4  4.84187m 15.8191 198 985.3  4.35910m 28.5762
98 495.3  4.83523m 15.9526 199 990.2  4.35532m 28.6953
99 500.2  4.82869m 16.086 200 995.1  4.35153m 28.8142
100 505.1  4.82217m 16.2192 201  1.00000k  4.34781m 28.9334
101 510  4.81575m 16.3522 　 　 　 　
Table 10 Z axis Detailed frequency data of inductance Ls and reactance Z

 

Temperature test
Current [A] Working time [min] Product voltage [V]
75(X轴) 0 85.17
10 85.59
20 86.3
30 87.13
40 88.06
50 88.95
60 89.83
Note 　
Table 9: Relationship data between temperature, working time and current

 

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