DX5MT37-30 Coaxial Five-ring Square Coil (with custom base): Quality Inspection Report

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DX5MT37-30 Coaxial Five-ring Square Coil (with custom base) P1 DX5MT37-30 Coaxial Five-ring Square Coil (with custom base) P2 DX5MT37-30 Coaxial Five-ring Square Coil (with custom base) P2

 

Overall Dimensions: 2050mm(L) x 800mm(W) x 1930mm(H)

Weight: 130kg

 

 

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:
Coaxial five-ring square coil (with custom base)		 Product model: DX5MT37-30
Test time: July 6, 2026
    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
25.0℃ 25.0℃ - 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）
DX5MT37-30 2 - 12.440
4 - 23.524
5 59.81 31.073
6 - 37.280
8 - 49.719
10 119.26 61.798
Table 2 Magnetic field strength data
 
Magnetic field uniformity
No. Area Current Center(nT) Max(nT) Min(nT) Uniformity
DX5MT37-30 Φ250*900mm 0.1A 61798.8 62768.5 60415.832 -2.2379%
XYZ Magnetic field strength(nT)
(0,0,0） 61798.8
(-450,0,-125） 62737.9
(-450,125,0） 62768.5
(-450,0,0） 62094.6
(-450,-125,0） 62626.2
(-450,0,125） 62683.1
(-300,0,-125） 60795.3
(-300,125,0） 60688.6
(-300,0,0） 61401.1
(-300,-125,0） 60856.9
(-300,0,125） 60752.4
(-150,0,-125） 62760.0
(-150,125,0） 62763.0
(-150,0,0） 62074.8
(-150,-125,0） 62613.1
(-150,0,125） 62699.6
(0,0,-125） 62211.9
(0,125,0） 62558.9
(0,0,0） 61798.8
(0,-125,0） 62408.4
(0,0,125） 62400.3
(150,0,-125） 60415.8
(150,125,0） 60512.8
(150,0,0） 61061.6
(150,-125,0） 60615.9
(150,0,125） 60614.2
(300,0,-125） 62429.5
(300,125,0） 61836.3
(300,0,0） 61533.6
(300,-125,0） 61720.3
(300,0,125） 61868.0
(450,0,-125） 61777.0
(450,125,0） 61818.3
(450,0,0） 60432.8
(450,-125,0） 61893.2
(450,0,125） 61837.5
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℃
25.0℃ 25.0℃ 11.900Ω 11.632Ω 15.111Ω
Table 4 Resistance R data
　
Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 397.471m 392.4  402.091m 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
51.94 20  2.51302k  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  402.091m 51.94 102 514.9  398.103m  1.28822k
2 24.9  401.955m 64.0398 103 519.8  397.912m  1.29986k
3 29.8  401.746m 76.2017 104 524.7  397.946m  1.31222k
4 34.7  401.657m 88.4308 105 529.6  397.937m  1.32445k
5 39.6  401.387m 100.632 106 534.5  397.919m  1.33664k
6 44.5  401.431m 112.932 107 539.4  397.934m  1.34894k
7 49.4  401.247m 125.181 108 544.3  397.953m  1.36126k
8 54.3  401.161m 137.455 109 549.2  397.936m  1.37345k
9 59.2  400.957m 149.699 110 554.1  397.970m  1.38582k
10 64.1  400.869m 161.969 111 559  397.949m  1.39800k
11 69  400.671m 174.199 112 563.9  397.932m  1.41020k
12 73.9  400.597m 186.476 113 568.8  397.945m  1.42249k
13 78.8  400.461m 198.721 114 573.7  397.997m  1.43494k
14 83.7  400.283m 210.938 115 578.6  398.038m  1.44734k
15 88.6  400.188m 223.192 116 583.5  397.967m  1.45934k
16 93.5  400.048m 235.418 117 588.4  397.938m  1.47148k
17 98.4  399.936m 247.654 118 593.3  397.903m  1.48361k
18 103.3  399.813m 259.874 119 598.2  397.987m  1.49617k
19 108.2  399.688m 272.088 120 603.1  398.124m  1.50894k
20 113.1  399.617m 284.334 121 608  398.025m  1.52082k
21 118  399.521m 296.558 122 612.9  398.091m  1.53334k
22 122.9  399.407m 308.762 123 617.8  398.201m  1.54603k
23 127.8  399.273m 320.944 124 622.7  398.218m  1.55835k
24 132.7  399.208m 333.177 125 627.6  398.179m  1.57045k
25 137.6  399.167m 345.425 126 632.5  398.280m  1.58312k
26 142.5  399.078m 357.631 127 637.4  398.288m  1.59542k
27 147.4  398.871m 369.722 128 642.3  398.269m  1.60760k
28 152.3  398.769m 381.897 129 647.2  398.232m  1.61971k
29 157.2  398.830m 394.231 130 652.1  398.310m  1.63230k
30 162.1  398.710m 406.384 131 657  398.340m  1.64469k
31 167  398.738m 418.684 132 661.9  398.318m  1.65686k
32 171.9  398.636m 430.845 133 666.8  398.306m  1.66907k
33 176.8  398.603m 443.08 134 671.7  398.383m  1.68166k
34 181.7  398.529m 455.264 135 676.6  398.376m  1.69390k
35 186.6  398.442m 467.429 136 681.5  398.383m  1.70620k
36 191.5  398.402m 479.645 137 686.4  398.401m  1.71855k
37 196.4  398.464m 491.987 138 691.3  398.415m  1.73087k
38 201.3  398.332m 504.083 139 696.2  398.479m  1.74342k
39 206.2  398.334m 516.347 140 701.1  398.485m  1.75572k
40 211.1  398.381m 528.67 141 706  398.611m  1.76854k
41 216  398.237m 540.74 142 710.9  398.503m  1.78034k
42 220.9  398.202m 552.951 143 715.8  398.532m  1.79274k
43 225.8  398.161m 565.15 144 720.7  398.511m  1.80492k
44 230.7  398.135m 577.37 145 725.6  398.528m  1.81726k
45 235.6  398.095m 589.567 146 730.5  398.541m  1.82960k
46 240.5  398.051m 601.756 147 735.4  398.630m  1.84228k
47 245.4  397.981m 613.901 148 740.3  398.698m  1.85487k
48 250.3  398.006m 626.196 149 745.2  398.658m  1.86696k
49 255.2  397.984m 638.41 150 750.1  398.649m  1.87919k
50 260.1  397.937m 650.584 151 755  398.670m  1.89157k
51 265  397.919m 662.806 152 759.9  398.713m  1.90405k
52 269.9  397.903m 675.031 153 764.8  398.693m  1.91623k
53 274.8  397.851m 687.189 154 769.7  398.740m  1.92873k
54 279.7  397.842m 699.422 155 774.6  398.844m  1.94152k
55 284.6  397.835m 711.659 156 779.5  398.779m  1.95348k
56 289.5  397.784m 723.811 157 784.4  398.884m  1.96628k
57 294.4  397.738m 735.975 158 789.3  398.780m  1.97804k
58 299.3  397.823m 748.379 159 794.2  398.802m  1.99043k
59 304.2  397.748m 760.483 160 799.1  398.788m  2.00264k
60 309.1  397.749m 772.733 161 804  398.861m  2.01529k
61 314  397.744m 784.97 162 808.9  398.847m  2.02751k
62 318.9  397.703m 797.131 163 813.8  398.866m  2.03988k
63 323.8  397.668m 809.303 164 818.7  398.992m  2.05281k
64 328.7  397.662m 821.534 165 823.6  398.973m  2.06500k
65 333.6  397.648m 833.749 166 828.5  398.948m  2.07716k
66 338.5  397.601m 845.889 167 833.4  398.960m  2.08951k
67 343.4  397.634m 858.205 168 838.3  399.014m  2.10208k
68 348.3  397.589m 870.348 169 843.2  399.081m  2.11472k
69 353.2  397.584m 882.579 170 848.1  399.016m  2.12666k
70 358.1  397.597m 894.847 171 853  399.145m  2.13964k
71 363  397.564m 907.013 172 857.9  399.156m  2.15199k
72 367.9  397.527m 919.167 173 862.8  399.172m  2.16437k
73 372.8  397.557m 931.478 174 867.7  399.168m  2.17663k
74 377.7  397.549m 943.7 175 872.6  399.266m  2.18946k
75 382.6  397.540m 955.917 176 877.5  399.233m  2.20158k
76 387.5  397.521m 968.111 177 882.4  399.259m  2.21401k
77 392.4  397.471m 980.227 178 887.3  399.268m  2.22636k
78 397.3  398.101m 994.039 179 892.2  399.321m  2.23895k
79 402.2  398.015m  1.00608k 180 897.1  399.405m  2.25173k
80 407.1  398.142m  1.01866k 181 902  399.445m  2.26425k
81 412  398.186m  1.03104k 182 906.9  399.391m  2.27624k
82 416.9  398.104m  1.04307k 183 911.8  399.477m  2.28903k
83 421.8  398.053m  1.05520k 184 916.7  399.481m  2.30136k
84 426.7  398.116m  1.06762k 185 921.6  399.522m  2.31390k
85 431.6  398.084m  1.07979k 186 926.5  399.585m  2.32658k
86 436.5  398.024m  1.09188k 187 931.4  399.595m  2.33893k
87 441.4  397.977m  1.10401k 188 936.3  399.543m  2.35093k
88 446.3  397.978m  1.11626k 189 941.2  399.639m  2.36380k
89 451.2  397.959m  1.12847k 190 946.1  399.668m  2.37628k
90 456.1  397.948m  1.14069k 191 951  399.661m  2.38854k
91 461  397.998m  1.15309k 192 955.9  399.727m  2.40125k
92 465.9  397.927m  1.16513k 193 960.8  399.799m  2.41399k
93 470.8  397.878m  1.17723k 194 965.7  399.785m  2.42622k
94 475.7  397.978m  1.18979k 195 970.6  399.814m  2.43871k
95 480.6  397.984m  1.20206k 196 975.5  399.875m  2.45139k
96 485.5  398.004m  1.21437k 197 980.4  399.897m  2.46384k
97 490.4  397.973m  1.22653k 198 985.3  400.058m  2.47715k
98 495.3  397.938m  1.23868k 199 990.2  399.911m  2.48856k
99 500.2  397.813m  1.25054k 200 995.1  400.055m  2.50178k
100 505.1  397.922m  1.26313k 201  1.00000k  399.891m  2.51302k
101 510  397.975m  1.27556k 　 　 　 　
Table 6 Detailed frequency data of inductance Ls and reactance Z
 
Temperature Rise Test
    Testing Method
This product employs the following measurement methods:
Maximum Current Temperature Rise Measurement: Measure the product's maximum safe operating time and highest temperature under the maximum current it can withstand;
Measure the overall coil data regarding temperature, time, and current. The measurement results are shown in the table below.
Temperature Rise Test
Operating Current [A] Operating Time [min] Product Temperature [°C]

Current

[A]

Operating time [min]

Voltage [V]

 Product temperature [℃] Current [A]

Operating time [min]

Voltage [V]

 Product temperature [℃]
5 0 59.81 21.45 10 0 119.3 20.61
10 60.67 25.46 5 122.2 27.47
20 61.29 28.36 10 126.2 36.85
30 61.78 30.64 15 129.0 43.30
40 62.22 32.70 20 131.4 48.99
50 62.54 34.19 25 133.7 54.20
60 62.84 35.59 30 135.7 59.03
70 63.09 36.76 35 137.6 63.49
80 63.3 37.74 40 139.3 67.41
90 63.56 38.95 45 140.9 71.07
100 63.68 39.51 50 142.0 73.73
110 63.79 40.03 55 143.2 76.40
120 63.86 40.35 60 144.3 79.06
130 63.98 40.92 　
140 64.12 41.57
150 64.16 41.76
160 64.2 41.94
170 64.32 42.50
180 64.35 42.64
190 64.42 42.97
200 64.46 43.16
210 64.5 43.34
220 64.55 43.58
230 64.59 43.76
240 64.62 43.90
Notes: Product temperature represents the average temperature rise calculated using the resistance method;
Operating time exceeds 4 hours at 5A; operating time is 1 hour at 10A.
Table 6: Data on the relationship between temperature, operating 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.

 

Customization is available, please let us know your requirements, and we will design a professional plan for you. Thank you!

Dexinmag® • 2026

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