Quality Inspection Report of Electromagnet and Helmholtz Coil

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DXWD-100 Electromagnet

 

Overall Dimensions: 600mm(L) x 480mm(W) x 770mm(H)

Coil spacing: 100mm
Pole diameter: 100mm

Pole face diameter: 100mm

Air gap range: 0-100mm

Weight: 317kg

 

 

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:
Electromagnet and Helmholtz coil		 Product model: DXWD-100 Electromagnet
DXHC-5 Helmholtz coil
DXHC-20 Helmholtz coil
Test time: Jan.29, 2024
    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
7.0℃ 7.0℃ 3m 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）
DXHC-5(pole face 100mm) 100KHz/4A 40 -
DXHC-5(pole face 100mm) 4A - 18.5
DXHC-20(pole face 100mm) 100Hz/10A 7 21.6
DXHC-20(pole face 100mm) 10KHz/10A 24 -
DXHC-20(pole face 100mm) 10A - 29.8
DXWD-100(pole face 100mm) 2A - 1545.7
DXWD-100(pole face 100mm) 4A - 3082.1
DXWD-100(pole face 100mm) 6A - 4568.5
DXWD-100(pole face 100mm) 8A - 5925.9
DXWD-100(pole face 100mm) 10A - 7031.4
　
Measuring air gap Display current (A) Display voltage Voltage (V) Magnetic field
strength（Gs）
20mmGap(pole face 100mm) 2A - 3855.9
20mmGap(pole face 100mm) 4A - 7397.7
20mmGap(pole face 100mm) 6A - 10026.4
20mmGap(pole face 100mm) 8A - 11509.3
20mmGap(pole face 100mm) 10A - 12437.4
20mmGap(pole face 60mm) 2A - 3845.7
20mmGap(pole face 60mm) 4A - 7645.8
20mmGap(pole face 60mm) 6A - 11135.1
20mmGap(pole face 60mm) 8A - 13807.2
20mmGap(pole face 60mm) 10A 111 15573.5
Table 2 Magnetic field strength 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 temperature Product temperature Measuring resistance ResistanceR@20℃ ResistanceR@85℃
DXHC-5 7.0℃ 0.230Ω 0.245Ω 0.318Ω
DXHC-20 7.0℃ 0.053Ω 0.056Ω 0.073Ω
DXWD-100 7.0℃ 10.970Ω 11.668Ω 15.156Ω
Table 3 Resistance R data
　
DXHC-5 Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 43.4120u  100.000k  47.1047u 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
0.17461 20 27.2911  100.000k
Table 4 DXHC-5 inductance Ls and reactance Z data
DXHC-5 Inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  47.1047u 0.17461 102  50.5099k  44.1106u 14.0134
2 519.9  45.9411u 0.23033 103  51.0098k  44.0985u 14.148
3  1.01980k  45.9435u 0.34252 104  51.5097k  44.0860u 14.2825
4  1.51970k  45.9243u 0.47242 105  52.0096k  44.0737u 14.417
5  2.01960k  45.9214u 0.60885 106  52.5095k  44.0616u 14.5515
6  2.51950k  45.9150u 0.74831 107  53.0094k  44.0497u 14.686
7  3.01940k  45.9106u 0.88923 108  53.5093k  44.0381u 14.8205
8  3.51930k  45.8994u 1.03091 109  54.0092k  44.0203u 14.9527
9  4.01920k  45.8870u 1.17309 110  54.5091k  44.0094u 15.0873
10  4.51910k  45.8743u 1.31562 111  55.0090k  43.9985u 15.2218
11  5.01900k  45.8658u 1.45844 112  55.5089k  43.9874u 15.3561
12  5.51890k  45.8615u 1.60149 113  56.0088k  43.9741u 15.4896
13  6.01880k  45.8492u 1.74445 114  56.5087k  43.9663u 15.625
14  6.51870k  45.8334u 1.8873 115  57.0086k  43.9560u 15.7594
15  7.01860k  45.8155u 2.03009 116  57.5085k  43.9457u 15.8938
16  7.51850k  45.7983u 2.17284 117  58.0084k  43.9356u 16.0282
17  8.01840k  45.7831u 2.31563 118  58.5083k  43.9254u 16.1624
18  8.51830k  45.7713u 2.45858 119  59.0082k  43.9155u 16.2968
19  9.01820k  45.7581u 2.60141 120  59.5081k  43.9057u 16.431
20  9.51810k  45.7441u 2.74414 121  60.0080k  43.8962u 16.5654
21  10.0180k  45.7255u 2.88653 122  60.5079k  43.8868u 16.6997
22  10.5179k  45.7033u 3.02863 123  61.0078k  43.8773u 16.8339
23  11.0178k  45.6815u 3.17062 124  61.5077k  43.8680u 16.9682
24  11.5177k  45.6607u 3.31255 125  62.0076k  43.8590u 17.1024
25  12.0176k  45.6413u 3.45446 126  62.5075k  43.8497u 17.2366
26  12.5175k  45.6235u 3.59641 127  63.0074k  43.8407u 17.3707
27  13.0174k  45.6045u 3.73816 128  63.5073k  43.8319u 17.5049
28  13.5173k  45.5853u 3.87978 129  64.0072k  43.8232u 17.6391
29  14.0172k  45.5654u 4.02124 130  64.5071k  43.8143u 17.7732
30  14.5171k  45.5447u 4.16251 131  65.0070k  43.8057u 17.9073
31  15.0170k  45.5237u 4.30362 132  65.5069k  43.7971u 18.0414
32  15.5169k  45.5007u 4.44443 133  66.0068k  43.7889u 18.1755
33  16.0168k  45.4775u 4.58508 134  66.5067k  43.7803u 18.3095
34  16.5167k  45.4536u 4.72551 135  67.0066k  43.7722u 18.4436
35  17.0166k  45.4216u 4.86498 136  67.5065k  43.7641u 18.5777
36  17.5165k  45.3994u 5.00528 137  68.0064k  43.7562u 18.7118
37  18.0164k  45.3774u 5.14548 138  68.5063k  43.7482u 18.8458
38  18.5163k  45.3549u 5.28547 139  69.0062k  43.7402u 18.9797
39  19.0162k  45.3322u 5.42531 140  69.5061k  43.7324u 19.1137
40  19.5161k  45.3093u 5.56499 141  70.0060k  43.7248u 19.2477
41  20.0160k  45.2865u 5.70453 142  70.5059k  43.7172u 19.3817
42  20.5159k  45.2636u 5.84393 143  71.0058k  43.7098u 19.5157
43  21.0158k  45.2409u 5.9832 144  71.5057k  43.7025u 19.6497
44  21.5157k  45.2182u 6.12233 145  72.0056k  43.6950u 19.7836
45  22.0156k  45.1953u 6.26129 146  72.5055k  43.6879u 19.9177
46  22.5155k  45.1723u 6.40011 147  73.0054k  43.6811u 20.0517
47  23.0154k  45.1492u 6.53876 148  73.5053k  43.6741u 20.1857
48  23.5153k  45.1260u 6.67726 149  74.0052k  43.6677u 20.3199
49  24.0152k  45.1025u 6.81557 150  74.5051k  43.6609u 20.4539
50  24.5151k  45.0792u 6.95375 151  75.0050k  43.6545u 20.588
51  25.0150k  45.0559u 7.0918 152  75.5049k  43.6481u 20.7221
52  25.5149k  45.0334u 7.22985 153  76.0048k  43.6419u 20.8562
53  26.0148k  45.0113u 7.36781 154  76.5047k  43.6356u 20.9903
54  26.5147k  44.9897u 7.50569 155  77.0046k  43.6291u 21.1242
55  27.0146k  44.9685u 7.64352 156  77.5045k  43.6236u 21.2585
56  27.5145k  44.9473u 7.78122 157  78.0044k  43.6175u 21.3926
57  28.0144k  44.9265u 7.91884 158  78.5043k  43.6119u 21.5268
58  28.5143k  44.9071u 8.05659 159  79.0042k  43.6062u 21.661
59  29.0142k  44.8883u 8.19431 160  79.5041k  43.6004u 21.795
60  29.5141k  44.8696u 8.33195 161  80.0040k  43.5950u 21.9293
61  30.0140k  44.8467u 8.46877 162  80.5039k  43.5897u 22.0635
62  30.5139k  44.8235u 8.60527 163  81.0038k  43.5842u 22.1976
63  31.0138k  44.8024u 8.74201 164  81.5037k  43.5789u 22.3318
64  31.5137k  44.7802u 8.87842 165  82.0036k  43.5736u 22.4659
65  32.0136k  44.7586u 9.01479 166  82.5035k  43.5685u 22.6002
66  32.5135k  44.7384u 9.15132 167  83.0034k  43.5631u 22.7342
67  33.0134k  44.7173u 9.28752 168  83.5033k  43.5581u 22.8683
68  33.5133k  44.6964u 9.42366 169  84.0032k  43.5527u 23.0023
69  34.0132k  44.6762u 9.55979 170  84.5031k  43.5474u 23.1363
70  34.5131k  44.6558u 9.69576 171  85.0030k  43.5424u 23.2704
71  35.0130k  44.6360u 9.83172 172  85.5029k  43.5373u 23.4044
72  35.5129k  44.5843u 9.96075 173  86.0028k  43.5323u 23.5385
73  36.0128k  44.5648u 10.0964 174  86.5027k  43.5271u 23.6724
74  36.5127k  44.5450u 10.232 175  87.0026k  43.5216u 23.8061
75  37.0126k  44.5258u 10.3675 176  87.5025k  43.5167u 23.9401
76  37.5125k  44.5067u 10.5029 177  88.0024k  43.5117u 24.074
77  38.0124k  44.4881u 10.6383 178  88.5023k  43.5063u 24.2076
78  38.5123k  44.4692u 10.7736 179  89.0022k  43.5012u 24.3415
79  39.0122k  44.4515u 10.909 180  89.5021k  43.4960u 24.4751
80  39.5121k  44.4339u 11.0443 181  90.0020k  43.4909u 24.6089
81  40.0120k  44.4170u 11.1797 182  90.5019k  43.4858u 24.7426
82  40.5119k  44.3998u 11.3149 183  91.0018k  43.4809u 24.8764
83  41.0118k  44.3835u 11.4503 184  91.5017k  43.4758u 25.01
84  41.5117k  44.3673u 11.5855 185  92.0016k  43.4711u 25.1438
85  42.0116k  44.3512u 11.7207 186  92.5015k  43.4660u 25.2774
86  42.5115k  44.3360u 11.856 187  93.0014k  43.4613u 25.4112
87  43.0114k  44.3201u 11.9911 188  93.5013k  43.4564u 25.5448
88  43.5113k  44.3051u 12.1262 189  94.0012k  43.4516u 25.6784
89  44.0112k  44.2903u 12.2614 190  94.5011k  43.4469u 25.8121
90  44.5111k  44.2750u 12.3962 191  95.0010k  43.4423u 25.9458
91  45.0110k  44.2604u 12.5312 192  95.5009k  43.4379u 26.0796
92  45.5109k  44.2461u 12.6662 193  96.0008k  43.4414u 26.2182
93  46.0108k  44.2325u 12.8013 194  96.5007k  43.4379u 26.3525
94  46.5107k  44.2186u 12.9362 195  97.0006k  43.4342u 26.4867
95  47.0106k  44.2044u 13.0709 196  97.5005k  43.4301u 26.6206
96  47.5105k  44.1903u 13.2056 197  98.0004k  43.4266u 26.7548
97  48.0104k  44.1763u 13.3402 198  98.5003k  43.4227u 26.8888
98  48.5103k  44.1630u 13.475 199  99.0002k  43.4188u 27.0228
99  49.0102k  44.1496u 13.6096 200  99.5001k  43.4150u 27.1568
100  49.5101k  44.1362u 13.7441 201  100.000k  43.4120u 27.2911
101  50.0100k  44.1234u 13.8788 　 　 　 　
Table 5 DXHC-5 Detailed frequency data of inductance Ls and reactance Z

 

DXHC-20 Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 30.1406u  100.000k  33.0316u 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
0.08335 20 18.9423  100.000k
Table 6 DXHC-20 inductance Ls and reactance Z data
DXHC-20 Inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  33.0316u 0.08335 102  50.5099k  30.4152u 9.65693
2 519.9  32.3712u 0.13466 103  51.0098k  30.4110u 9.7511
3  1.01980k  32.3507u 0.22376 104  51.5097k  30.3820u 9.8374
4  1.51970k  32.3147u 0.32026 105  52.0096k  30.3780u 9.93151
5  2.01960k  32.2761u 0.41885 106  52.5095k  30.3739u 10.0256
6  2.51950k  32.2311u 0.51816 107  53.0094k  30.3700u 10.1197
7  3.01940k  32.1782u 0.61754 108  53.5093k  30.3663u 10.2138
8  3.51930k  32.1211u 0.71678 109  54.0092k  30.3574u 10.3062
9  4.01920k  32.0593u 0.81572 110  54.5091k  30.3540u 10.4004
10  4.51910k  31.9946u 0.91431 111  55.0090k  30.3505u 10.4945
11  5.01900k  31.9339u 1.01271 112  55.5089k  30.3468u 10.5886
12  5.51890k  31.8770u 1.11088 113  56.0088k  30.3408u 10.6818
13  6.01880k  31.8177u 1.20865 114  56.5087k  30.3402u 10.7768
14  6.51870k  31.7568u 1.30601 115  57.0086k  30.3366u 10.8708
15  7.01860k  31.6975u 1.40307 116  57.5085k  30.3333u 10.9649
16  7.51850k  31.6399u 1.49988 117  58.0084k  30.3303u 11.0591
17  8.01840k  31.5872u 1.59657 118  58.5083k  30.3267u 11.1531
18  8.51830k  31.5403u 1.69323 119  59.0082k  30.3235u 11.2471
19  9.01820k  31.4944u 1.78966 120  59.5081k  30.3203u 11.3412
20  9.51810k  31.4514u 1.88597 121  60.0080k  30.3167u 11.4351
21  10.0180k  31.4093u 1.98208 122  60.5079k  30.3139u 11.5292
22  10.5179k  31.3663u 2.07786 123  61.0078k  30.3108u 11.6232
23  11.0178k  31.3248u 2.17348 124  61.5077k  30.3074u 11.7171
24  11.5177k  31.2878u 2.26918 125  62.0076k  30.3045u 11.8112
25  12.0176k  31.2516u 2.36472 126  62.5075k  30.3014u 11.9051
26  12.5175k  31.2199u 2.46036 127  63.0074k  30.2983u 11.9991
27  13.0174k  31.1898u 2.55593 128  63.5073k  30.2953u 12.0931
28  13.5173k  31.1612u 2.65145 129  64.0072k  30.2922u 12.187
29  14.0172k  31.1338u 2.74689 130  64.5071k  30.2891u 12.2809
30  14.5171k  31.1078u 2.84229 131  65.0070k  30.2863u 12.3748
31  15.0170k  31.0827u 2.93759 132  65.5069k  30.2832u 12.4687
32  15.5169k  31.0579u 3.03279 133  66.0068k  30.2803u 12.5626
33  16.0168k  31.0343u 3.12795 134  66.5067k  30.2775u 12.6566
34  16.5167k  31.0118u 3.22306 135  67.0066k  30.2745u 12.7504
35  17.0166k  30.9815u 3.31723 136  67.5065k  30.2717u 12.8443
36  17.5165k  30.9618u 3.41235 137  68.0064k  30.2689u 12.9382
37  18.0164k  30.9436u 3.50752 138  68.5063k  30.2659u 13.032
38  18.5163k  30.9257u 3.60261 139  69.0062k  30.2632u 13.1259
39  19.0162k  30.9087u 3.6977 140  69.5061k  30.2603u 13.2197
40  19.5161k  30.8920u 3.79272 141  70.0060k  30.2576u 13.3135
41  20.0160k  30.8762u 3.88774 142  70.5059k  30.2549u 13.4074
42  20.5159k  30.8611u 3.98276 143  71.0058k  30.2522u 13.5012
43  21.0158k  30.8468u 4.07778 144  71.5057k  30.2496u 13.5951
44  21.5157k  30.8331u 4.17281 145  72.0056k  30.2472u 13.689
45  22.0156k  30.8198u 4.26779 146  72.5055k  30.2445u 13.7827
46  22.5155k  30.8071u 4.36278 147  73.0054k  30.2421u 13.8766
47  23.0154k  30.7948u 4.45777 148  73.5053k  30.2396u 13.9705
48  23.5153k  30.7827u 4.55268 149  74.0052k  30.2372u 14.0644
49  24.0152k  30.7710u 4.64759 150  74.5051k  30.2347u 14.1581
50  24.5151k  30.7597u 4.74248 151  75.0050k  30.2324u 14.2521
51  25.0150k  30.7487u 4.83736 152  75.5049k  30.2301u 14.3459
52  25.5149k  30.7384u 4.93228 153  76.0048k  30.2279u 14.4398
53  26.0148k  30.7285u 5.02721 154  76.5047k  30.2257u 14.5337
54  26.5147k  30.7186u 5.12205 155  77.0046k  30.2233u 14.6275
55  27.0146k  30.7090u 5.21691 156  77.5045k  30.2215u 14.7216
56  27.5145k  30.6995u 5.31171 157  78.0044k  30.2196u 14.8155
57  28.0144k  30.6905u 5.40654 158  78.5043k  30.2177u 14.9095
58  28.5143k  30.6828u 5.50156 159  79.0042k  30.2162u 15.0037
59  29.0142k  30.6774u 5.59694 160  79.5041k  30.2141u 15.0975
60  29.5141k  30.6732u 5.69251 161  80.0040k  30.2124u 15.1916
61  30.0140k  30.6566u 5.78586 162  80.5039k  30.2106u 15.2856
62  30.5139k  30.6466u 5.88023 163  81.0038k  30.2090u 15.3797
63  31.0138k  30.6385u 5.97488 164  81.5037k  30.2068u 15.4734
64  31.5137k  30.6293u 6.06928 165  82.0036k  30.2054u 15.5676
65  32.0136k  30.6208u 6.16375 166  82.5035k  30.2036u 15.6615
66  32.5135k  30.6136u 6.25845 167  83.0034k  30.2016u 15.7554
67  33.0134k  30.6056u 6.35292 168  83.5033k  30.1999u 15.8493
68  33.5133k  30.5978u 6.44737 169  84.0032k  30.1976u 15.9429
69  34.0132k  30.5904u 6.54188 170  84.5031k  30.1956u 16.0367
70  34.5131k  30.5830u 6.63635 171  85.0030k  30.1936u 16.1305
71  35.0130k  30.5760u 6.73085 172  85.5029k  30.1911u 16.224
72  35.5129k  30.5691u 6.82531 173  86.0028k  30.1892u 16.3178
73  36.0128k  30.5626u 6.91985 174  86.5027k  30.1867u 16.4113
74  36.5127k  30.5560u 7.01431 175  87.0026k  30.1843u 16.5048
75  37.0126k  30.5493u 7.10872 176  87.5025k  30.1818u 16.5982
76  37.5125k  30.5431u 7.2032 177  88.0024k  30.1797u 16.6919
77  38.0124k  30.5368u 7.29763 178  88.5023k  30.1766u 16.7849
78  38.5123k  30.5307u 7.39205 179  89.0022k  30.1741u 16.8783
79  39.0122k  30.5249u 7.48653 180  89.5021k  30.1716u 16.9717
80  39.5121k  30.5194u 7.58103 181  90.0020k  30.1690u 17.065
81  40.0120k  30.5140u 7.67552 182  90.5019k  30.1665u 17.1583
82  40.5119k  30.5084u 7.76996 183  91.0018k  30.1642u 17.2518
83  41.0118k  30.5030u 7.8644 184  91.5017k  30.1617u 17.3451
84  41.5117k  30.4979u 7.95887 185  92.0016k  30.1592u 17.4384
85  42.0116k  30.4928u 8.05333 186  92.5015k  30.1566u 17.5316
86  42.5115k  30.4877u 8.14777 187  93.0014k  30.1541u 17.6248
87  43.0114k  30.4827u 8.24218 188  93.5013k  30.1521u 17.7183
88  43.5113k  30.4778u 8.33659 189  94.0012k  30.1495u 17.8115
89  44.0112k  30.4727u 8.43091 190  94.5011k  30.1473u 17.905
90  44.5111k  30.4682u 8.52537 191  95.0010k  30.1451u 17.9983
91  45.0110k  30.4636u 8.61977 192  95.5009k  30.1429u 18.0917
92  45.5109k  30.4593u 8.71424 193  96.0008k  30.1496u 18.1904
93  46.0108k  30.4553u 8.80873 194  96.5007k  30.1485u 18.2844
94  46.5107k  30.4510u 8.90315 195  97.0006k  30.1474u 18.3785
95  47.0106k  30.4466u 8.99746 196  97.5005k  30.1461u 18.4723
96  47.5105k  30.4419u 9.09169 197  98.0004k  30.1450u 18.5664
97  48.0104k  30.4372u 9.18588 198  98.5003k  30.1435u 18.6601
98  48.5103k  30.4326u 9.28009 199  99.0002k  30.1423u 18.7541
99  49.0102k  30.4281u 9.3743 200  99.5001k  30.1407u 18.8477
100  49.5101k  30.4237u 9.46849 201  100.000k  30.1406u 18.9423
101  50.0100k  30.4194u 9.56271 　 　 　 　
Table 7 DXHC-20 Detailed frequency data of inductance Ls and reactance Z

 

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