DXHC16-05 One-dimensional AC Helmholtz Coil: Quality Inspection Report

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Overall Dimensions: 350mm x 225mm x 350mm
Coil spacing: 135mm
Inside diameter of coil: 290mm
Outside diameter of coil: 330mm
Weight: 3.49kg

 

 

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 AC Helmholtz Coil		 Product model: DXHC16-05
Test time: July 9th, 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
26.0℃ 26.0℃ - 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 Voltage (V) Magnetic field
strength（Gs）
1 2 0.25 0.11116
2 4 0.49 0.22386
3 6 0.74 0.33494
4 8 0.98 0.44816
5 10 1.23 0.56013
6 10（100KHz） 25.5 0.52
Note The coil coefficient is 0.056 Gs/A, and the alternating magnetic field intensity at a frequency of 100 KHz is 0.52 Gs.
Table 2 Magnetic field strength data
 
Magnetic field uniformity
No. Area Current Center Max Min Uniformity
1 SΦ80mm 10A 56013nT 56050nT 55658nT -0.63%
XYZ Magnetic field strength
(0,0,0) 56013nT
(0,0,-40) 55662nT
(0,0,40) 56050nT
(40,0,0) 55658nT
(-40,0,0) 55975nT
(0,40,0) 55909nT
(0,-40,0) 55938nT
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
Environment temp Product temperature Measuring resistance ResistanceR@20℃ ResistanceR@85℃
26.0℃ 26.0℃ 0.099Ω 0.096Ω 0.125Ω
Table 4 Resistance R data
　
Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 4.65009u  95.5009k  5.89590u 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
0.1139 519.9 2.93321  100.000k
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  5.89590u 0.11574 102  50.5099k  4.71840u 1.50477
2 519.9  4.82238u 0.1139 103  51.0098k  4.71770u 1.51935
3  1.01980k  4.82575u 0.11786 104  51.5097k  4.71673u 1.53383
4  1.51970k  4.82241u 0.12272 105  52.0096k  4.71545u 1.5482
5  2.01960k  4.82682u 0.12906 106  52.5095k  4.71395u 1.56249
6  2.51950k  4.81774u 0.13679 107  53.0094k  4.71191u 1.57658
7  3.01940k  4.82326u 0.14578 108  53.5093k  4.70945u 1.59051
8  3.51930k  4.82309u 0.15575 109  54.0092k  4.70722u 1.60459
9  4.01920k  4.82087u 0.16647 110  54.5091k  4.70683u 1.61923
10  4.51910k  4.81671u 0.17781 111  55.0090k  4.70627u 1.6338
11  5.01900k  4.82048u 0.18984 112  55.5089k  4.70559u 1.64834
12  5.51890k  4.82234u 0.20249 113  56.0088k  4.70474u 1.6628
13  6.01880k  4.83061u 0.21575 114  56.5087k  4.70448u 1.67747
14  6.51870k  4.82278u 0.22866 115  57.0086k  4.70388u 1.69201
15  7.01860k  4.81741u 0.24185 116  57.5085k  4.70321u 1.70652
16  7.51850k  4.81452u 0.25535 117  58.0084k  4.70259u 1.72105
17  8.01840k  4.81522u 0.26914 118  58.5083k  4.70199u 1.73559
18  8.51830k  4.81670u 0.28289 119  59.0082k  4.70137u 1.75011
19  9.01820k  4.81724u 0.29673 120  59.5081k  4.70065u 1.7646
20  9.51810k  4.81646u 0.31062 121  60.0080k  4.70001u 1.77912
21  10.0180k  4.82371u 0.32509 122  60.5079k  4.69938u 1.79363
22  10.5179k  4.81755u 0.33892 123  61.0078k  4.69872u 1.80812
23  11.0178k  4.81163u 0.35283 124  61.5077k  4.69818u 1.82266
24  11.5177k  4.80470u 0.36668 125  62.0076k  4.69761u 1.83719
25  12.0176k  4.80762u 0.38132 126  62.5075k  4.69709u 1.85173
26  12.5175k  4.80780u 0.39579 127  63.0074k  4.69669u 1.86632
27  13.0174k  4.80748u 0.41027 128  63.5073k  4.69612u 1.88084
28  13.5173k  4.80702u 0.42479 129  64.0072k  4.69550u 1.89533
29  14.0172k  4.80648u 0.43933 130  64.5071k  4.69485u 1.9098
30  14.5171k  4.80348u 0.45374 131  65.0070k  4.69404u 1.9242
31  15.0170k  4.78836u 0.467 132  65.5069k  4.69303u 1.93851
32  15.5169k  4.77965u 0.48075 133  66.0068k  4.69193u 1.95279
33  16.0168k  4.78001u 0.4954 134  66.5067k  4.69054u 1.96691
34  16.5167k  4.78104u 0.51013 135  67.0066k  4.68867u 1.98083
35  17.0166k  4.77510u 0.52422 136  67.5065k  4.68722u 1.99492
36  17.5165k  4.77684u 0.53907 137  68.0064k  4.68539u 2.00884
37  18.0164k  4.77747u 0.55386 138  68.5063k  4.68311u 2.02255
38  18.5163k  4.77100u 0.56795 139  69.0062k  4.68170u 2.03663
39  19.0162k  4.77267u 0.58284 140  69.5061k  4.68028u 2.05071
40  19.5161k  4.77133u 0.59735 141  70.0060k  4.67876u 2.06473
41  20.0160k  4.77121u 0.61209 142  70.5059k  4.67796u 2.07906
42  20.5159k  4.77092u 0.62679 143  71.0058k  4.67737u 2.09349
43  21.0158k  4.77039u 0.64155 144  71.5057k  4.67729u 2.10816
44  21.5157k  4.76965u 0.65627 145  72.0056k  4.67725u 2.12283
45  22.0156k  4.76896u 0.67099 146  72.5055k  4.67776u 2.13777
46  22.5155k  4.76829u 0.68569 147  73.0054k  4.67901u 2.15306
47  23.0154k  4.76767u 0.7004 148  73.5053k  4.67947u 2.16797
48  23.5153k  4.76691u 0.71511 149  74.0052k  4.68156u 2.18367
49  24.0152k  4.76637u 0.72988 150  74.5051k  4.68275u 2.19895
50  24.5151k  4.76547u 0.74458 151  75.0050k  4.68485u 2.21467
51  25.0150k  4.76418u 0.75915 152  75.5049k  4.68566u 2.22978
52  25.5149k  4.76338u 0.77387 153  76.0048k  4.68718u 2.24524
53  26.0148k  4.76290u 0.78863 154  76.5047k  4.68829u 2.2605
54  26.5147k  4.75760u 0.80258 155  77.0046k  4.68876u 2.27546
55  27.0146k  4.75654u 0.81718 156  77.5045k  4.69035u 2.29097
56  27.5145k  4.76391u 0.83327 157  78.0044k  4.69078u 2.30591
57  28.0144k  4.77397u 0.84999 158  78.5043k  4.69188u 2.32119
58  28.5143k  4.78198u 0.86644 159  79.0042k  4.69257u 2.33627
59  29.0142k  4.77996u 0.88089 160  79.5041k  4.69203u 2.35073
60  29.5141k  4.77467u 0.89476 161  80.0040k  4.69225u 2.36557
61  30.0140k  4.74958u 0.90498 162  80.5039k  4.69148u 2.3799
62  30.5139k  4.74811u 0.91953 163  81.0038k  4.69120u 2.39448
63  31.0138k  4.74722u 0.93421 164  81.5037k  4.69003u 2.4086
64  31.5137k  4.74611u 0.94883 165  82.0036k  4.68927u 2.42292
65  32.0136k  4.74506u 0.96348 166  82.5035k  4.68833u 2.43714
66  32.5135k  4.74437u 0.97818 167  83.0034k  4.68671u 2.451
67  33.0134k  4.74350u 0.99283 168  83.5033k  4.68545u 2.46504
68  33.5133k  4.74263u 1.00747 169  84.0032k  4.68414u 2.47906
69  34.0132k  4.74175u 1.02211 170  84.5031k  4.68248u 2.49286
70  34.5131k  4.74103u 1.03681 171  85.0030k  4.68106u 2.50679
71  35.0130k  4.74031u 1.05149 172  85.5029k  4.67924u 2.5205
72  35.5129k  4.73978u 1.06619 173  86.0028k  4.67771u 2.53436
73  36.0128k  4.73919u 1.08088 174  86.5027k  4.67601u 2.54811
74  36.5127k  4.73869u 1.09557 175  87.0026k  4.67444u 2.56192
75  37.0126k  4.73820u 1.11026 176  87.5025k  4.67269u 2.57563
76  37.5125k  4.73766u 1.12495 177  88.0024k  4.67079u 2.58924
77  38.0124k  4.73713u 1.13962 178  88.5023k  4.66919u 2.603
78  38.5123k  4.73646u 1.15427 179  89.0022k  4.66752u 2.61672
79  39.0122k  4.73596u 1.16895 180  89.5021k  4.66574u 2.63037
80  39.5121k  4.73540u 1.18361 181  90.0020k  4.66415u 2.64411
81  40.0120k  4.73480u 1.19827 182  90.5019k  4.66294u 2.65806
82  40.5119k  4.73414u 1.21291 183  91.0018k  4.66164u 2.67196
83  41.0118k  4.73343u 1.22753 184  91.5017k  4.65992u 2.6856
84  41.5117k  4.73275u 1.24218 185  92.0016k  4.65849u 2.6994
85  42.0116k  4.73198u 1.2568 186  92.5015k  4.65703u 2.71317
86  42.5115k  4.73117u 1.27144 187  93.0014k  4.65590u 2.72713
87  43.0114k  4.73044u 1.2861 188  93.5013k  4.65466u 2.74102
88  43.5113k  4.72957u 1.30069 189  94.0012k  4.65338u 2.75488
89  44.0112k  4.72861u 1.31526 190  94.5011k  4.65219u 2.76878
90  44.5111k  4.72759u 1.32982 191  95.0010k  4.65107u 2.78271
91  45.0110k  4.72670u 1.34441 192  95.5009k  4.65009u 2.79674
92  45.5109k  4.72589u 1.359 193  96.0008k  4.67168u 2.82468
93  46.0108k  4.72526u 1.37364 194  96.5007k  4.67258u 2.83991
94  46.5107k  4.72470u 1.38829 195  97.0006k  4.67307u 2.85487
95  47.0106k  4.72404u 1.40291 196  97.5005k  4.67254u 2.86921
96  47.5105k  4.72327u 1.41748 197  98.0004k  4.67275u 2.884
97  48.0104k  4.72241u 1.43202 198  98.5003k  4.67204u 2.89822
98  48.5103k  4.72154u 1.44656 199  99.0002k  4.67186u 2.91277
99  49.0102k  4.72066u 1.46109 200  99.5001k  4.67094u 2.92685
100  49.5101k  4.71988u 1.47565 201  100.000k  4.65811u 2.93321
101  50.0100k  4.71914u 1.49021 　 　 　 　
Table 6 Detailed frequency data of inductance Ls and reactance Z
 
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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