Quality Inspection Report of DXHC10-290 Custom Adjustable Turn Helmholtz Coil

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DXHC10-290 custom adjustable turn helmholtz coil

Overall Dimensions: 600mm(L) x 600mm(W) x 1590mm(H)

Weight: 33kg

Performance test report
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: Custom adjustable turn coil				Product model:		DXHC10-290
Product Name: Custom adjustable turn coil				Test time:		July 14, 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
23.0℃		23.0℃		~		0~30000nT
Table 1 Measurement environment data
Magnetic field parameter test
1. Using the device
DX-F2031 power supply DX-180 Gauss Meter
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）
10 turns (coil edge)		3		-		2.29
20 turns (coil edge)		3		-		4.20
30 turns (coil edge)		3		-		5.97
Table 2 Magnetic field strength data
Electrical parameter test
1. Using equipment
Digital Multimeter Impedance analyzer
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℃
23.0℃	23.0℃	0.810Ω		0.799Ω		1.038Ω
Table 3 Resistance R data
Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H]		FREQ[Hz]		Ls MAX[H]		FREQ[Hz]
218.922u		1.00000k		265.011u		20
Z MIN[Ω]		FREQ[Hz]		Z MAX[Ω]		FREQ[Hz]
0.81576		20		1.75303		1.00000k
Table 4 inductance Ls and reactance Z data
Inductance Ls, reactance Z-scan measurement
POINTS	FREQ[Hz]	Ls	Z	POINTS	FREQ[Hz]	Ls	Z
1	20	265.011u	0.81576	102	514.9	243.191u	1.21469
2	24.9	264.605u	0.81614	103	519.8	242.947u	1.22031
3	29.8	263.583u	0.81678	104	524.7	242.692u	1.22592
4	34.7	261.969u	0.81734	105	529.6	242.424u	1.2317
5	39.6	262.118u	0.81811	106	534.5	242.212u	1.23725
6	44.5	261.343u	0.81889	107	539.4	241.923u	1.24284
7	49.4	260.576u	0.81983	108	544.3	241.714u	1.24845
8	54.3	261.207u	0.82098	109	549.2	241.509u	1.25418
9	59.2	261.509u	0.82214	110	554.1	241.175u	1.25973
10	64.1	261.180u	0.82353	111	559	240.950u	1.26528
11	69	260.955u	0.82493	112	563.9	240.658u	1.27092
12	73.9	260.591u	0.82648	113	568.8	240.430u	1.27668
13	78.8	260.115u	0.82802	114	573.7	240.140u	1.28217
14	83.7	259.965u	0.82966	115	578.6	239.891u	1.28789
15	88.6	259.791u	0.83132	116	583.5	239.653u	1.29351
16	93.5	259.810u	0.83318	117	588.4	239.361u	1.29904
17	98.4	260.041u	0.83513	118	593.3	239.099u	1.30465
18	103.3	259.823u	0.83717	119	598.2	238.868u	1.31042
19	108.2	259.677u	0.83933	120	603.1	238.617u	1.31607
20	113.1	259.567u	0.84167	121	608	238.328u	1.32155
21	118	259.310u	0.844	122	612.9	238.077u	1.32716
22	122.9	259.261u	0.84642	123	617.8	237.811u	1.33285
23	127.8	259.149u	0.84889	124	622.7	237.545u	1.33851
24	132.7	258.950u	0.8513	125	627.6	237.286u	1.34403
25	137.6	258.837u	0.85396	126	632.5	237.007u	1.34964
26	142.5	258.644u	0.85661	127	637.4	236.762u	1.35524
27	147.4	258.440u	0.8594	128	642.3	236.493u	1.36093
28	152.3	258.387u	0.86223	129	647.2	236.241u	1.36655
29	157.2	258.293u	0.86533	130	652.1	235.975u	1.37208
30	162.1	258.198u	0.86851	131	657	235.684u	1.37757
31	167	258.109u	0.8717	132	661.9	235.462u	1.38326
32	171.9	257.940u	0.87485	133	666.8	235.224u	1.38889
33	176.8	257.806u	0.87823	134	671.7	234.946u	1.39447
34	181.7	257.666u	0.88156	135	676.6	234.626u	1.3998
35	186.6	257.519u	0.88504	136	681.5	234.400u	1.40552
36	191.5	257.378u	0.88864	137	686.4	234.151u	1.41105
37	196.4	257.141u	0.89217	138	691.3	233.893u	1.4167
38	201.3	256.999u	0.89593	139	696.2	233.593u	1.4221
39	206.2	256.881u	0.89959	140	701.1	233.356u	1.42772
40	211.1	256.720u	0.90341	141	706	233.141u	1.43356
41	216	256.602u	0.90731	142	710.9	232.835u	1.43874
42	220.9	256.406u	0.91113	143	715.8	232.604u	1.44437
43	225.8	256.253u	0.91516	144	720.7	232.345u	1.44984
44	230.7	256.145u	0.91919	145	725.6	232.091u	1.45535
45	235.6	255.952u	0.92327	146	730.5	231.830u	1.46082
46	240.5	255.740u	0.9274	147	735.4	231.554u	1.46628
47	245.4	255.523u	0.93169	148	740.3	231.296u	1.4717
48	250.3	255.329u	0.93581	149	745.2	231.037u	1.47724
49	255.2	255.133u	0.94012	150	750.1	230.799u	1.4828
50	260.1	254.941u	0.94456	151	755	230.552u	1.48838
51	265	254.786u	0.94899	152	759.9	230.275u	1.49375
52	269.9	254.572u	0.95341	153	764.8	230.060u	1.49934
53	274.8	254.446u	0.95798	154	769.7	229.811u	1.50472
54	279.7	254.289u	0.96258	155	774.6	229.532u	1.51007
55	284.6	254.141u	0.96724	156	779.5	229.308u	1.51562
56	289.5	253.933u	0.9718	157	784.4	229.056u	1.52103
57	294.4	253.755u	0.97659	158	789.3	228.810u	1.52646
58	299.3	253.509u	0.98128	159	794.2	228.547u	1.53182
59	304.2	253.353u	0.986	160	799.1	228.300u	1.53724
60	309.1	253.135u	0.99087	161	804	228.076u	1.54273
61	314	252.937u	0.99565	162	808.9	227.788u	1.54795
62	318.9	252.715u	1.00054	163	813.8	227.539u	1.55333
63	323.8	252.492u	1.00539	164	818.7	227.313u	1.55876
64	328.7	252.283u	1.01027	165	823.6	227.037u	1.56404
65	333.6	252.101u	1.01537	166	828.5	226.807u	1.56947
66	338.5	251.839u	1.02034	167	833.4	226.543u	1.57473
67	343.4	251.618u	1.02526	168	838.3	226.300u	1.58005
68	348.3	251.441u	1.0304	169	843.2	226.076u	1.58547
69	353.2	251.179u	1.03549	170	848.1	225.809u	1.59064
70	358.1	251.011u	1.04067	171	853	225.585u	1.59609
71	363	250.798u	1.04584	172	857.9	225.360u	1.60138
72	367.9	250.543u	1.05105	173	862.8	225.135u	1.60687
73	372.8	250.289u	1.05611	174	867.7	224.870u	1.6121
74	377.7	250.123u	1.06145	175	872.6	224.649u	1.61737
75	382.6	249.853u	1.0667	176	877.5	224.395u	1.62251
76	387.5	249.622u	1.07198	177	882.4	224.168u	1.62784
77	392.4	249.399u	1.07731	178	887.3	223.951u	1.63324
78	397.3	249.150u	1.08253	179	892.2	223.729u	1.63856
79	402.2	248.909u	1.08786	180	897.1	223.489u	1.64381
80	407.1	248.692u	1.09333	181	902	223.279u	1.6492
81	412	248.440u	1.09865	182	906.9	223.047u	1.65447
82	416.9	248.180u	1.10404	183	911.8	222.826u	1.65972
83	421.8	247.956u	1.10943	184	916.7	222.589u	1.66496
84	426.7	247.725u	1.11491	185	921.6	222.369u	1.67017
85	431.6	247.459u	1.12032	186	926.5	222.150u	1.67546
86	436.5	247.214u	1.12576	187	931.4	221.931u	1.68072
87	441.4	246.980u	1.13133	188	936.3	221.718u	1.68597
88	446.3	246.742u	1.13685	189	941.2	221.486u	1.69099
89	451.2	246.502u	1.14235	190	946.1	221.291u	1.69639
90	456.1	246.235u	1.14784	191	951	221.051u	1.70157
91	461	245.959u	1.1533	192	955.9	220.781u	1.70641
92	465.9	245.714u	1.15882	193	960.8	220.635u	1.71177
93	470.8	245.463u	1.16434	194	965.7	220.464u	1.71723
94	475.7	245.219u	1.1699	195	970.6	220.221u	1.72222
95	480.6	244.938u	1.17544	196	975.5	219.981u	1.72728
96	485.5	244.665u	1.18098	197	980.4	219.766u	1.73237
97	490.4	244.418u	1.18658	198	985.3	219.559u	1.73753
98	495.3	244.179u	1.19221	199	990.2	219.354u	1.74272
99	500.2	243.952u	1.19785	200	995.1	219.148u	1.74792
100	505.1	243.663u	1.2034	201	1.00000k	218.922u	1.75303
101	510	243.446u	1.20904
Table 5 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.