Quality Inspection Report of DXHC7-100 One-dimensional Helmholtz Coil

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DXHC7-100 One-dimensional Helmholtz coil  DXHC7-100 One-dimensional Helmholtz coil  DXHC7-100 One-dimensional Helmholtz coil

 

Overall Dimensions: 200mm x 150mm x 195mm
Coil spacing: 28mm
Inside diameter of coil: 93mm
Outside diameter of coil: 180mm
Weight: 4.51kg

 

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: DXHC7-100
Test time: July 24, 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
26.0℃ 26.0℃ 2m 0~30000nT
Table 1 Measurement environment data
 
Magnetic field parameter test
    1. Using the device
DX-F2031 power supply
DXACP power amplifier
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）
0，0，0(AC) 5 24 105.56
0，0，0(DC) 1 - 21.89
0，0，0(DC) 2 - 43.384
0，0，0(DC) 3 - 65.82
0，0，0(DC) 4 - 87.78
0，0，0(DC) 5 - 109.749
Table 2 Magnetic field strength data
 
Magnetic field uniformity
Measuring air gap Measuring area Measuring current Extremum
Max		 Extremum
Min		 Uniformity Note
1 Sφ20mm 2A 43.418Gs 43.348Gs -0.08% 　
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 temperature Product temperature Measuring resistance ResistanceR@20℃ ResistanceR@85℃
26.0℃ 26.0℃ 1.370Ω 1.333Ω 1.732Ω
Table 4 Resistance R data
 
Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 12.5971m  1.00000k  12.6239m 29.8
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
2.09698 20 79.174  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  12.6101m 2.09698 102 514.9  12.6015m 40.7972
2 24.9  12.6031m 2.40307 103 519.8  12.6014m 41.1848
3 29.8  12.6239m 2.73385 104 524.7  12.6014m 41.5724
4 34.7  12.6216m 3.07543 105 529.6  12.6013m 41.9601
5 39.6  12.6141m 3.42563 106 534.5  12.6013m 42.3479
6 44.5  12.6117m 3.78427 107 539.4  12.6013m 42.7355
7 49.4  12.5977m 4.1441 108 544.3  12.6012m 43.123
8 54.3  12.6111m 4.51674 109 549.2  12.6011m 43.5107
9 59.2  12.6123m 4.88848 110 554.1  12.6012m 43.8988
10 64.1  12.6103m 5.2613 111 559  12.6012m 44.2865
11 69  12.6096m 5.63687 112 563.9  12.6011m 44.6743
12 73.9  12.6082m 6.01371 113 568.8  12.6011m 45.0619
13 78.8  12.6045m 6.39066 114 573.7  12.6011m 45.4497
14 83.7  12.6007m 6.76843 115 578.6  12.6010m 45.8373
15 88.6  12.5995m 7.14823 116 583.5  12.6010m 46.2251
16 93.5  12.6032m 7.53142 117 588.4  12.6010m 46.6129
17 98.4  12.6053m 7.91414 118 593.3  12.6009m 47.0004
18 103.3  12.6052m 8.2966 119 598.2  12.6009m 47.3882
19 108.2  12.6050m 8.67957 120 603.1  12.6010m 47.7763
20 113.1  12.6049m 9.0631 121 608  12.6009m 48.1638
21 118  12.6049m 9.44697 122 612.9  12.6008m 48.5515
22 122.9  12.6038m 9.83043 123 617.8  12.6009m 48.9394
23 127.8  12.6025m 10.2138 124 622.7  12.6008m 49.327
24 132.7  12.6020m 10.5982 125 627.6  12.6007m 49.7147
25 137.6  12.6016m 10.9827 126 632.5  12.6006m 50.1021
26 142.5  12.6018m 11.3681 127 637.4  12.6006m 50.4901
27 147.4  12.6026m 11.754 128 642.3  12.6006m 50.8777
28 152.3  12.6032m 12.1401 129 647.2  12.6006m 51.2654
29 157.2  12.6037m 12.5262 130 652.1  12.6005m 51.6531
30 162.1  12.6040m 12.9123 131 657  12.6005m 52.0408
31 167  12.6038m 13.298 132 661.9  12.6004m 52.4284
32 171.9  12.6031m 13.6833 133 666.8  12.6004m 52.8162
33 176.8  12.6029m 14.0692 134 671.7  12.6003m 53.2037
34 181.7  12.6028m 14.4554 135 676.6  12.6003m 53.5915
35 186.6  12.6026m 14.8415 136 681.5  12.6002m 53.979
36 191.5  12.6023m 15.2277 137 686.4  12.6002m 54.3669
37 196.4  12.6021m 15.6139 138 691.3  12.6001m 54.7542
38 201.3  12.6019m 16.0003 139 696.2  12.6001m 55.1422
39 206.2  12.6018m 16.3868 140 701.1  12.6000m 55.5297
40 211.1  12.6018m 16.7735 141 706  12.6000m 55.9175
41 216  12.6017m 17.1601 142 710.9  12.6000m 56.3052
42 220.9  12.6017m 17.5469 143 715.8  12.5999m 56.6929
43 225.8  12.6017m 17.9339 144 720.7  12.5997m 57.0799
44 230.7  12.6017m 18.3208 145 725.6  12.5996m 57.467
45 235.6  12.6019m 18.708 146 730.5  12.5996m 57.8551
46 240.5  12.6020m 19.0951 147 735.4  12.5996m 58.2428
47 245.4  12.6019m 19.482 148 740.3  12.5995m 58.6304
48 250.3  12.6021m 19.8693 149 745.2  12.5995m 59.0181
49 255.2  12.6022m 20.2567 150 750.1  12.5995m 59.4059
50 260.1  12.6023m 20.6439 151 755  12.5994m 59.7935
51 265  12.6023m 21.0312 152 759.9  12.5993m 60.1809
52 269.9  12.6025m 21.4187 153 764.8  12.5993m 60.5686
53 274.8  12.6024m 21.8058 154 769.7  12.5992m 60.9561
54 279.7  12.6024m 22.1931 155 774.6  12.5992m 61.3441
55 284.6  12.6024m 22.5804 156 779.5  12.5991m 61.7315
56 289.5  12.6024m 22.9676 157 784.4  12.5992m 62.1194
57 294.4  12.6023m 23.355 158 789.3  12.5990m 62.5068
58 299.3  12.6022m 23.742 159 794.2  12.5990m 62.8945
59 304.2  12.6016m 24.1283 160 799.1  12.5990m 63.2823
60 309.1  12.6015m 24.5155 161 804  12.5989m 63.6696
61 314  12.6014m 24.9029 162 808.9  12.5988m 64.0572
62 318.9  12.6014m 25.2902 163 813.8  12.5988m 64.4449
63 323.8  12.6013m 25.6776 164 818.7  12.5987m 64.8325
64 328.7  12.6013m 26.0651 165 823.6  12.5987m 65.2203
65 333.6  12.6012m 26.4524 166 828.5  12.5987m 65.6079
66 338.5  12.6013m 26.84 167 833.4  12.5986m 65.9954
67 343.4  12.6012m 27.2274 168 838.3  12.5986m 66.3833
68 348.3  12.6012m 27.6148 169 843.2  12.5985m 66.7707
69 353.2  12.6011m 28.0022 170 848.1  12.5985m 67.1582
70 358.1  12.6012m 28.3899 171 853  12.5984m 67.5457
71 363  12.6012m 28.7775 172 857.9  12.5984m 67.9335
72 367.9  12.6012m 29.165 173 862.8  12.5983m 68.3209
73 372.8  12.6012m 29.5527 174 867.7  12.5982m 68.7085
74 377.7  12.6012m 29.9402 175 872.6  12.5982m 69.0961
75 382.6  12.6012m 30.3279 176 877.5  12.5982m 69.4839
76 387.5  12.6012m 30.7154 177 882.4  12.5982m 69.8716
77 392.4  12.6012m 31.1031 178 887.3  12.5981m 70.259
78 397.3  12.6023m 31.4935 179 892.2  12.5981m 70.647
79 402.2  12.6023m 31.8812 180 897.1  12.5980m 71.0344
80 407.1  12.6023m 32.2689 181 902  12.5980m 71.4222
81 412  12.6023m 32.6565 182 906.9  12.5979m 71.8095
82 416.9  12.6022m 33.0441 183 911.8  12.5979m 72.1973
83 421.8  12.6022m 33.4319 184 916.7  12.5978m 72.5847
84 426.7  12.6022m 33.8194 185 921.6  12.5978m 72.9723
85 431.6  12.6021m 34.207 186 926.5  12.5978m 73.3601
86 436.5  12.6021m 34.5947 187 931.4  12.5977m 73.7476
87 441.4  12.6021m 34.9824 188 936.3  12.5976m 74.1349
88 446.3  12.6021m 35.3701 189 941.2  12.5976m 74.5229
89 451.2  12.6020m 35.7577 190 946.1  12.5975m 74.9103
90 456.1  12.6020m 36.1454 191 951  12.5975m 75.2979
91 461  12.6020m 36.5331 192 955.9  12.5975m 75.6856
92 465.9  12.6019m 36.9207 193 960.8  12.5976m 76.0743
93 470.8  12.6019m 37.3082 194 965.7  12.5975m 76.4616
94 475.7  12.6018m 37.6957 195 970.6  12.5976m 76.8496
95 480.6  12.6018m 38.0835 196 975.5  12.5975m 77.2368
96 485.5  12.6017m 38.4711 197 980.4  12.5974m 77.6245
97 490.4  12.6016m 38.8587 198 985.3  12.5974m 78.012
98 495.3  12.6016m 39.2464 199 990.2  12.5973m 78.3996
99 500.2  12.6016m 39.6342 200 995.1  12.5973m 78.7871
100 505.1  12.6016m 40.0218 201  1.00000k  12.5971m 79.174
101 510  12.6016m 40.4096 　 　 　 　
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 version of the product is subject to this document.

 

 

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