Medical temperature measuring thermistor, medical temperature sensor, medical thermistor, medical temperature sensor, human body temperature measuring temperature sensor, human body temperature measuring thermistor

　　NTC (negative temperature coefficient) thermistor is a heat-sensitive semiconductor resistor. Its resistance value decreases as the temperature increases. The temperature coefficient of resistance is in the range of -2%/k~-6%/k, which is about that of metal. 10 times the temperature coefficient of resistance. Changes in the resistance value of the NTC thermistor can be caused by changes in the external ambient temperature, or can be caused by self-heating due to the flow of current. His various uses are based on this property. NTC thermistors are constructed from polycrystalline ceramics with mixed oxides. The conductive mechanism of this material is quite complex.

　　NTC thermistor, probe assembly (combination). A finished thermistor assembly (combination) composed of a thermistor shell, extension lead, and sometimes a connector. The structure generally consists of an NTC thermistor, a probe (metal shell or plastic shell, etc.), an extension lead, and a metal terminal or connector. The principle is that under a certain measurement power, the resistance value of the NTC thermistor increases rapidly as the temperature rises. Decrease. Using this characteristic, the NTC thermistor can be used to determine the corresponding temperature by measuring its resistance value, thereby achieving the purpose of detecting and controlling temperature. Huaju Electronics can use NTC temperature sensors according to different customer requirements. In order to meet the needs and requirements of customizing various high-quality medical temperature sensors, Nanjing Huaju Electronics Co., Ltd. has organized a dedicated technical research and development team to tackle this technology since the beginning of 2006. It has won four national patents and developed The constant-temperature oil tank used for testing this product has a temperature control accuracy of 0.002°C (two thousandths of a degree) (obtained national patent). After three years of technical research, at the end of 2008, it was finally developed that can compete with the world. The NTC temperature sensor for electronic thermometers is comparable to that of advanced NTC manufacturers. The resolution of this NTC temperature sensor can reach ±0.01°C, the accuracy can reach ±0.02°C, the response speed is <2.8 seconds, the product has good stability, and the annual drift rate of resistance is high. ≤0.1% (equivalent to less than 0.025℃). After repeated demonstrations by domestic and foreign users and testing by authoritative institutions, the product performance has fully reached the level of the world's advanced NTC manufacturers such as Japan, and far exceeds that of South Korea and Taiwan.

　　With the development of miniaturization and intelligence of electronic products and the application of the Internet of Things, more and more wearable electronic products have entered people's lives, such as smart bracelets, Google Glasses, shoes, underwear and other personal devices It is necessary to detect physiological indicators of the human body, among which the measurement of human body temperature is essential. The most economical and convenient solution for measuring human body temperature is a circuit solution made of a thermistor. Huaju Electronics is a professional thermistor manufacturer. Huaju has previously launched products with measurable resolution up to ±0.01°C, accuracy up to ±0.02°C, response speed <2.8 seconds, good product stability, and annual resistance drift rate. ≤0.1% (equivalent to less than 0.025℃) leaded NTC thermistor. In order to adapt to the miniaturization and low power consumption of wearable electronic products, Huaju Electronics has launched a patch type high-precision NTC thermistor. Huaju Electronics serves as One of the largest manufacturers of sensitive components in China, it shoulders the responsibility of the country and the nation, allows Chinese people to use its own high-precision electronic thermometer products, and has a strong sense of mission to enhance the self-confidence and self-esteem of the Chinese nation. Electronic thermometers are the core The component is the NTC temperature sensor that senses temperature. Because it is used to measure human body temperature, the accuracy, stability and sensitivity of the temperature sensor are required to be very high. Due to the high requirements on technical indicators such as measurement accuracy, response speed, and annual resistance drift rate, about 70% of the NTC thermistor temperature sensors used in electronic thermometers in my country still need to be imported. Therefore, this is also a bottleneck restricting the industrialization of electronic thermometers in my country. It has been previously reported that due to the influence of the technology of domestic NTC manufacturers, the NTC temperature sensors used in electronic thermometers in my country need to be provided 100% from abroad or from Taiwan and its wholly-owned enterprises in my country. This is inaccurate. There are also inaccurate ones in China. A few companies have already started special research and development in this area, and have begun to provide supporting products to manufacturers of finished electronic thermometers. However, limited by the technological level of its NTC temperature sensor, the electronic thermometers produced by it are always not ideal in terms of temperature measurement accuracy, response speed, stability, etc., and there are more or less differences from the actual temperature and temperature drift. In order to solve this difficult problem in the domestic industry, Nanjing Huaju Electronics Co., Ltd. has organized a dedicated technical research and development team to tackle this technology since the beginning of 2006. It has won four national awards and developed a The temperature control accuracy tested for this product is 0. 002℃ (that is, two thousandths of a degree) constant temperature oil tank (won the national award). After three years of technical research, at the end of 2008, we finally developed a dedicated NTC temperature sensor for electronic thermometers that is comparable to the world's advanced NTC manufacturers.

　　The sensor has a resolution of ±0.01°C, an accuracy of ±0.02°C, a response speed of <2.8 seconds, good product stability, and an annual resistance drift rate of ≤0.1% (equivalent to less than 0.025°C). After repeated demonstrations by users at home and abroad and testing by authoritative institutions, the product performance has fully reached the level of the world's advanced NTC manufacturers such as Japan, and far exceeds that of South Korea and Taiwan.

	Other domestic products	Japanese products	Huaju products
Zero power resistance value accuracy error	≤±0.16%	≤±0.08%	≤±0.03%
B value accuracy	≤±0.5%	≤±0.5%	≤±0.3%
Annual temperature drift rate	≤±0.1℃	≤±0.025℃	≤±0.025℃
Zero power resistance change rate	≤0.5%/year	≤0.1%/year	≤0.1%/year
Thermal time constant	≤3.2s	≤2.8s	≤2.8s
dissipation coefficient	≥0.7mw/℃	≥0.7mw/℃	≥0.7mW/℃
range of working temperature	-20～100℃	-30～100℃	-40～125℃

 

Product number	Nominal resistance	Nominal resistance	Resistance accuracy	B value	B value accuracy	Center point temperature measurement accuracy
	(KΩ)	(KΩ)	R37			℃
MFY□-104E3950FA-30-A	R25= 100	R 37 = 6 0	R 37 ≤±0.025%	B 25/50 = 3950	≤±0.3%	0.006
MFY□-104F3950FA-50-A	R25= 100	R 37 = 6 0	R 37 ≤±0.04%	B 25/50 = 3950	≤±0.3%	0.012
MFY□-503E3950FA-30-A	R25= 50	R 37 = 30	R 37 ≤±0.05%	B 25/50 = 3950	≤±0.3%	0.012
MFY□-503F3950EA-50-A	R25= 50	R 37 = 30	R 37 ≤±0.08%	B 25/50 = 3950	≤±0.3%	0.02
MFY□-303E3950FA-30-A	R25= 30	R 37 = 18	R 37 ≤±0.09%	B 25/50 = 3950	≤±0.3%	0.02
MFY□-303F3950FA-50-A	R25=30	R37=18	R 37 ≤±0.15%	B 25/50 = 3950	≤±0.3%	0.04
MFY□-103E3950FA-30-A	R25=10	R37=6.017	R 37 ≤±0.25%	B 25/50 = 3950	≤±0.3%	0.07
MFY□-2.252K-01-3935-03-A	R25= 2.252	R 37 = 1.3005	R25 ≤±0.1%	B 25/50 = 3935	≤±0.3%	0.03
MFY□-3K-01-3935-03-A	R25= 3	R 37 = 1.0846	R25 ≤±0.1%	B 25/50 = 3950	≤±0.3%	0.03
MFY□-5K-01-3470-03-A	R25= 5	R 37 = 3.1966	R25 ≤±0.1%	B 25/50 = 3470	≤±0.3%	0.03
MFY□-5K-01-3950-03-A	R25= 5	R 37 = 2.9983	R25 ≤±0.1%	B 25/50 = 3950	≤±0.3%	0.03
MFY□-10K-01-3950-03-A	R25= 10	R 37 = 6.017	R25 ≤±0.1%	B 25/50 = 3950	≤±0.3%	0.03
MFY□-10K-01-3977-03-B	R25= 10	R 37 = 6.0138	R25 ≤±0.1%	B 25/85 = 3977	≤±0.3%	0.03
MFY□-10K-01-3380-03-A	R25= 10	R 37 = 6.4709	R25 ≤±0.1%	B 25/50 = 3380	≤±0.3%	0.03
MFY□-10K-01-3435-03-B	R25=  10	R 37 = 6.4709	R25 ≤±0.1%	B 25/85 = 3435	≤±0.3%	0.03
MFY□-50K-01-3950-03-A	R25= 50	R 37 = 6.4709	R25 ≤±0.1%	B 25/50 = 3950	≤±0.3%	0.03
MFY□-100K-01-3950-03-A	R25= 100	R 37 = 6.4709	R25 ≤±0.1%	B 25/50 = 3950	≤±0.3%	0.03
DFY□-923E3950-05-A	R25= 93.2178	R 39.78 = 50	R39.78 ≤±0.1%	B 25/50 = 3950	≤±0.3%	0.04

CWF series NTC temperature sensor series	MFS1 epoxy encapsulation/injection molding series	MFS2 casing series	MFS3 video lead series	MFS4 crimp terminal series
MFS5 surface mount series	MFS6 bullet series	MFS7 flange series	MFS8 cap shell series	MFS9 threaded series
MFS10 tube card series	Medical temperature sensor	MFYS1 medical NTC temperature sensor	MFYS2 Medical NTC Temperature Sensor	MFYS3 medical NTC temperature sensor
MFYS4 medical NTC temperature sensor	MFYS5 medical NTC temperature sensor	MFYS6 medical NTC temperature sensor	MFYS7 medical NTC temperature sensor	MFYS8 medical NTC temperature sensor
MFYS9 medical NTC temperature sensor	MFYS10 medical NTC temperature sensor	MFYS10 medical NTC temperature sensor	MFYS11 medical NTC temperature sensor

 

　　Electronic thermometer temperature sensor series:

　　

 

　　Remarks: The MF54 series electronic thermometer thermistor has a temperature measurement accuracy of less than ±0.012 degrees when using the 30-ohm range. The temperature measurement accuracy is less than ±0.012 degrees when using the 50-ohm range.

　　

 

　　6. Appearance structure and dimensions:

　　

code name	D	L1	L2	L3	d
	max	max	type	±1	±0.05
B1	1.6	4.0	100/87	3	0.2

7. Electrical performance

	project	symbol	Test Conditions	unit	Performance requirements
7.1	Zero power resistance value at 25°C	R25	Ta=25± 0.05℃ Test power ≤0.05mw Test in flowing liquid	KΩ	50±1%
7.2	Zero power resistance value at 37°C	R37	Ta=37± 0.01℃ Test power ≤0.05mw Test in flowing liquid	KΩ	Center value of each gear
7.3	B1 value	B 25/50	B=[(Ta×Tb)/(Tb-Ta)]× ln(Ra/Rb)	K	3950±1%
7.4	B2 value	B 34 /4 2	B=[(Ta×Tb)/(Tb-Ta)]× ln(Ra/Rb)	K	3949±0.5%
7.5	dissipation coefficient	δ	Tb=50℃± 0.1℃	mW/℃	≥0.7 in still air
7.6	time constant	τ	Tb=50℃±0.1℃	sec	≤2.8 in still air
7.7	Insulation resistance	/	100DC,1min	MΩ	≥100
7.8	Zero power consumption resistance value drift rate at room temperature	/	Ta=25±0.05℃,	Time: 365 days	≤0.1
7.9	range of working temperature	/	/	℃	-40~100
7.10	Thermal resistance characteristics	/	/	/	See Appendix 1

7. Reliability test

	project	Test conditions and methods	skills requirement
7.1	Resistant to welding heat	Immerse the lead wire into the tin liquid at 260±5℃, with the liquid level above 6mm from the resistor body, for 10±1 seconds	No visible damage, ΔR/R≤±1%, ΔB/B≤±1%
7.2	Terminal strength	Axial static tension: 1N, time: 60S	No visible damage, ΔR/R≤±1%, ΔB/B≤±1%
7.3	rapid temperature changes	-20℃ 5min → 25℃ 3min → 100℃ 5min → 25℃ 1min, repeat 5 times	No visible damage, ΔR/R≤±1%, ΔB/B≤±1%
7.4	Load at high temperature	Temperature: 100±5℃, DC: 0.1±10%mA Time: 1000±24 hours	No visible damage, ΔR/R≤±1%, ΔB/B≤±1%
7.5	dry heat	Temperature: 100±5℃, time: 1000±24 hours	No visible damage, ΔR/R≤±1%, ΔB/B≤±1%
7.6	Steady state moist heat	Temperature: 40±2℃, Humidity: 95±2%, Time: 1000±24 hours	No visible damage, ΔR/R≤±1%, ΔB/B≤±1%, insulation resistance≥100MΩ
7.7	Zero power consumption resistance value drift rate at room temperature	Stored in a closed container without harmful gases and dry for one year at a temperature of 25±15℃	ΔR/R≤±0.1% ΔB/B≤±0.1%
7.8	Resin encapsulation strength	The lead wire is tightly wrapped around a cylinder with a diameter of 3 mm, and then a downward pulling force is applied to the lead wire and increased to 5N.	no visible damage
7.9	free fall	The sample is freely dropped from a height of 1m to a wooden board.	no visible damage

8. Welding conditions
When welding, the welding point should be at least 6mm away from the root of the resistor, the welding temperature should be lower than 300°C, and the welding time should be as short as possible.
9. Storage conditions
9.1 Storage temperature: -10℃ ~ 40℃;
9.2 Storage humidity: ≤75% RH;
9.3 Avoid storage in environments with corrosive gases and light; 9.4 
The package needs to be resealed after opening;
4. MF54 R 37 =30K Ω   30 Ω resistance value classification table 

1st gear	29.629KΩ	8 gears	29.846KΩ	15 gears	30.063KΩ
2nd gear	29.660KΩ	9 gears	29.877KΩ	16 gears	30.094KΩ
3rd gear	29.691KΩ	10 gears	29.908KΩ	17 gears	30.125KΩ
4th gear	29.722KΩ	11 gears	29.939KΩ	18 gears	30.156KΩ
5th gear	29.753KΩ	12 gears	29.970KΩ	19 gears	30.187KΩ
6 gears	29.784KΩ	13 gears	30.001KΩ	20 gears	30.218KΩ
7 gears	29.815KΩ	14 gears	30.032KΩ	21 gears	30.249KΩ

　

Note: When the test temperature accuracy exceeds ±0.01°C, the resistance value will drift slightly, and the drift amplitude increases as the temperature accuracy exceeds.

Gear: 1 R37=29.629KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.489	33.527	33.564	0.112	-0.112	0.027	-0.027
35	32.138	32.168	32.197	0.091	-0.091	0.022	-0.022
36	30.848	30.870	30.892	0.071	-0.071	0.017	-0.017
37	29.614	29.629	29.644	0.050	-0.050	0.012	-0.012
38	28.422	28.442	28.463	0.071	-0.071	0.017	-0.017
39	27.283	27.308	27.333	0.091	-0.091	0.022	-0.022
40	26.193	26.222	26.251	0.111	-0.111	0.027	-0.027
41	25.151	25.184	25.217	0.131	-0.131	0.032	-0.032
42	24.155	24.192	24.228	0.152	-0.151	0.038	-0.038

Gear level: 2          R37=29.660KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.524	33.562	33.600	0.112	-0.112	0.027	-0.027
35	32.172	32.201	32.231	0.091	-0.091	0.022	-0.022
36	30.880	30.902	30.924	0.071	-0.071	0.017	-0.017
37	29.645	29.660	29.675	0.050	-0.050	0.012	-0.012
38	28.452	28.472	28.492	0.071	-0.071	0.017	-0.017
39	27.311	27.336	27.361	0.091	-0.091	0.022	-0.022
40	26.220	26.250	26.279	0.111	-0.111	0.027	-0.027
41	25.177	25.211	25.244	0.131	-0.131	0.032	-0.032
42	24.180	24.217	24.254	0.152	-0.151	0.038	-0.038

  Gear: 3          R37=29.691KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.559	33.597	33.635	0.112	-0.112	0.027	-0.027
35	32.205	32.235	32.265	0.091	-0.091	0.022	-0.022
36	30.913	30.935	30.957	0.071	-0.071	0.017	-0.017
37	29.676	29.691	29.706	0.050	-0.050	0.012	-0.012
38	28.482	28.502	28.522	0.071	-0.071	0.017	-0.017
39	27.340	27.365	27.390	0.091	-0.091	0.022	-0.022
40	26.248	26.277	26.306	0.111	-0.111	0.027	-0.027
41	25.204	25.237	25.270	0.131	-0.131	0.032	-0.032
42	24.205	24.242	24.279	0.152	-0.151	0.038	-0.038

Gear level: 4     R37=29.722KΩ Accuracy: ±0.050%  Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

　

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.594	33.631	33.667	0.108	-0.108	0.026	-0.026
35	32.239	32.268	32.296	0.088	-0.088	0.021	-0.021
36	30.945	30.966	30.987	0.067	-0.067	0.016	-0.016
37	29.707	29.722	29.737	0.047	-0.047	0.011	-0.011
38	28.511	28.531	28.550	0.067	-0.067	0.016	-0.016
39	27.368	27.392	27.416	0.087	-0.087	0.021	-0.021
40	26.275	26.304	26.332	0.108	-0.108	0.026	-0.026
41	25.230	25.262	25.295	0.128	-0.128	0.032	-0.031
42	24.231	24.267	24.303	0.148	-0.148	0.037	-0.037

Gear: 5            R37=29.753KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)    

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.629	33.667	33.705	0.112	-0.112	0.026	-0.026
35	32.273	32.302	32.332	0.091	-0.091	0.022	-0.022
36	30.977	30.999	31.021	0.070	-0.070	0.017	-0.017
37	29.738	29.753	29.768	0.050	-0.050	0.012	-0.012
38	28.541	28.561	28.582	0.070	-0.070	0.017	-0.017
39	27.397	27.422	27.447	0.091	-0.091	0.022	-0.022
40	26.303	26.332	26.361	0.111	-0.111	0.027	-0.027
41	25.256	25.290	25.323	0.131	-0.131	0.032	-0.032
42	24.256	24.293	24.330	0.151	-0.151	0.038	-0.038

Gear: 6                R37=29.784KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.664	33.702	33.740	0.112	-0.112	0.026	-0.026
35	32.306	32.336	32.366	0.091	-0.091	0.022	-0.022
36	31.009	31.031	31.053	0.070	-0.070	0.017	-0.017
37	29.768	29.784	29.799	0.050	-0.050	0.012	-0.012
38	28.571	28.591	28.611	0.070	-0.070	0.017	-0.017
39	27.425	27.450	27.475	0.091	-0.091	0.022	-0.022
40	26.330	26.359	26.389	0.111	-0.111	0.027	-0.027
41	25.283	25.316	25.349	0.131	-0.131	0.032	-0.032
42	24.281	24.318	24.355	0.151	-0.151	0.038	-0.038

  Gear: 7            R37=29.815KΩ Accuracy: ±0.050%              B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy (%)		Temperature accuracy (℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.700	33.737	33.775	0.112	-0.112	0.026	-0.026
35	32.340	32.370	32.399	0.091	-0.091	0.022	-0.022
36	31.042	31.064	31.086	0.070	-0.070	0.017	-0.017
37	29.800	29.815	29.830	0.050	-0.050	0.012	-0.012
38	28.601	28.621	28.641	0.070	-0.070	0.017	-0.017
39	27.454	27.479	27.504	0.091	-0.091	0.022	-0.022
40	26.358	26.387	26.416	0.111	-0.111	0.027	-0.027
41	25.309	25.342	25.376	0.131	-0.131	0.032	-0.032
42	24.307	24.344	24.381	0.151	-0.151	0.038	-0.037

Gear: 8            R37=29.846KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

　

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.734	33.772	33.810	0.112	-0.112	0.026	-0.026
35	32.374	32.403	32.433	0.091	-0.091	0.022	-0.022
36	31.074	31.096	31.118	0.070	-0.070	0.017	-0.017
37	29.831	29.846	29.861	0.050	-0.050	0.012	-0.012
38	28.630	28.651	28.671	0.070	-0.070	0.017	-0.017
39	27.483	27.508	27.533	0.091	-0.091	0.022	-0.022
40	26.385	26.414	26.444	0.111	-0.111	0.027	-0.027
41	25.335	25.369	25.402	0.131	-0.131	0.032	-0.032
42	24.332	24.369	24.406	0.151	-0.151	0.038	-0.037

Gear: 9            R37=29.877KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.770	33.806	33.843	0.108	-0.108	0.026	-0.026
35	32.407	32.436	32.465	0.088	-0.087	0.021	-0.021
36	31.106	31.127	31.148	0.067	-0.067	0.016	-0.016
37	29.862	29.877	29.892	0.046	-0.046	0.011	-0.011
38	28.660	28.680	28.699	0.067	-0.067	0.016	-0.016
39	27.511	27.535	27.559	0.087	-0.087	0.021	-0.021
40	26.412	26.441	26.469	0.107	-0.107	0.026	-0.026
41	25.362	25.394	25.427	0.128	-0.128	0.031	-0.031
42	24.357	24.393	24.430	0.148	-0.148	0.037	-0.037

Gear: 10   R37=29.908KΩ Accuracy: ±0.050%     B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.804	33.842	33.880	0.112	-0.111	0.026	-0.026
35	32.441	32.471	32.500	0.091	-0.091	0.022	-0.022
36	31.139	31.161	31.183	0.070	-0.070	0.017	-0.017
37	29.893	29.908	29.923	0.050	-0.050	0.012	-0.012
38	28.690	28.710	28.730	0.070	-0.070	0.017	-0.017
39	27.540	27.565	27.590	0.090	-0.090	0.022	-0.022
40	26.440	26.469	26.498	0.111	-0.111	0.027	-0.027
41	25.388	25.421	25.455	0.131	-0.131	0.032	-0.032
42	24.382	24.419	24.456	0.151	-0.151	0.038	-0.037

Gear: 11        R37=29.939KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.840	33.877	33.915	0.111	-0.111	0.026	-0.026
35	32.475	32.504	32.534	0.091	-0.091	0.022	-0.022
36	31.171	31.193	31.215	0.070	-0.070	0.017	-0.017
37	29.924	29.939	29.954	0.050	-0.050	0.012	-0.012
38	28.720	28.740	28.760	0.070	-0.070	0.017	-0.017
39	27.568	27.593	27.618	0.090	-0.090	0.022	-0.022
40	26.467	26.497	26.526	0.111	-0.111	0.027	-0.027
41	25.414	25.448	25.481	0.131	-0.131	0.032	-0.032
42	24.408	24.445	24.482	0.151	-0.151	0.037	-0.037

Gear: 12        R37=29.970KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.875	33.913	33.951	0.111	-0.111	0.026	-0.026
35	32.508	32.538	32.568	0.091	-0.091	0.022	-0.022
36	31.203	31.225	31.247	0.070	-0.070	0.017	-0.017
37	29.955	29.970	29.985	0.050	-0.050	0.012	-0.012
38	28.749	28.770	28.790	0.070	-0.070	0.017	-0.017
39	27.597	27.622	27.647	0.090	-0.090	0.022	-0.022
40	26.494	26.524	26.553	0.111	-0.111	0.027	-0.027
41	25.441	25.474	25.507	0.131	-0.131	0.032	-0.032
42	24.433	24.470	24.507	0.151	-0.151	0.037	-0.037

Gear: 13                     R37=30.001K Ω Accuracy : ± 0.050% B34/42=3949K  Accuracy : ± 0.5% (P233-22)   

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.910	33.948	33.986	0.111	-0.111	0.026	-0.026
35	32.542	32.572	32.601	0.091	-0.091	0.022	-0.022
36	31.236	31.258	31.280	0.070	-0.070	0.017	-0.017
37	29.986	30.001	30.016	0.050	-0.050	0.012	-0.012
38	28.779	28.799	28.820	0.070	-0.070	0.017	-0.017
39	27.625	27.650	27.676	0.090	-0.090	0.022	-0.022
40	26.522	26.551	26.581	0.111	-0.111	0.027	-0.027
41	25.467	25.500	25.534	0.131	-0.131	0.032	-0.032
42	24.458	24.495	24.532	0.151	-0.151	0.037	-0.037

Gear: 14          R37=30.032KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.945	33.983	34.021	0.111	-0.111	0.026	-0.026
35	32.576	32.605	32.635	0.091	-0.091	0.022	-0.022
36	31.268	31.290	31.312	0.070	-0.070	0.017	-0.017
37	30.017	30.032	30.047	0.049	-0.049	0.012	-0.012
38	28.809	28.829	28.850	0.070	-0.070	0.017	-0.017
39	27.654	27.679	27.704	0.090	-0.090	0.022	-0.022
40	26.549	26.579	26.608	0.111	-0.110	0.027	-0.027
41	25.493	25.527	25.560	0.131	-0.131	0.032	-0.032
42	24.484	24.521	24.558	0.151	-0.151	0.037	-0.037

Gear: 15          R37=30.063KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	33.980	34.018	34.056	0.111	-0.111	0.026	-0.026
35	32.609	32.639	32.669	0.091	-0.091	0.022	-0.021
36	31.300	31.322	31.344	0.070	-0.070	0.017	-0.017
37	30.048	30.063	30.078	0.049	-0.049	0.012	-0.012
38	28.839	28.859	28.879	0.070	-0.070	0.017	-0.017
39	27.682	27.708	27.733	0.090	-0.090	0.022	-0.022
40	26.577	26.606	26.636	0.111	-0.110	0.027	-0.027
41	25.520	25.553	25.587	0.131	-0.131	0.032	-0.032
42	24.509	24.546	24.583	0.151	-0.151	0.037	-0.037

Gear: 16                R37=30.094K Ω Accuracy : ± 0.050% B34/42=3949K  Accuracy : ± 0.5% (P233-22)   

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	34.015	34.053	34.091	0.111	-0.111	0.026	-0.026
35	32.643	32.673	32.702	0.091	-0.090	0.021	-0.021
36	31.332	31.354	31.377	0.070	-0.070	0.017	-0.017
37	30.079	30.094	30.109	0.049	-0.049	0.012	-0.012
38	28.868	28.889	28.909	0.070	-0.070	0.017	-0.017
39	27.711	27.736	27.761	0.090	-0.090	0.022	-0.022
40	26.604	26.634	26.663	0.110	-0.110	0.027	-0.027
41	25.546	25.579	25.613	0.131	-0.131	0.032	-0.032
42	24.534	24.571	24.608	0.151	-0.151	0.037	-0.037

　

Gear: 17          R37=30.125KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	34.050	34.088	34.126	0.111	-0.111	0.026	-0.026
35	32.676	32.706	32.736	0.090	-0.090	0.021	-0.021
36	31.365	31.387	31.409	0.070	-0.070	0.017	-0.017
37	30.110	30.125	30.140	0.049	-0.049	0.012	-0.012
38	28.898	28.918	28.939	0.070	-0.070	0.017	-0.017
39	27.740	27.765	27.790	0.090	-0.090	0.022	-0.022
40	26.632	26.661	26.691	0.110	-0.110	0.027	-0.027
41	25.572	25.606	25.639	0.131	-0.131	0.032	-0.032
42	24.559	24.597	24.634	0.151	-0.151	0.037	-0.037

Gear: 18          R37=30.156KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	34.085	34.123	34.161	0.111	-0.111	0.026	-0.026
35	32.710	32.740	32.770	0.090	-0.090	0.021	-0.021
36	31.397	31.419	31.441	0.070	-0.070	0.017	-0.017
37	30.141	30.156	30.171	0.049	-0.049	0.012	-0.012
38	28.928	28.948	28.969	0.070	-0.070	0.017	-0.017
39	27.768	27.793	27.818	0.090	-0.090	0.022	-0.022
40	26.659	26.689	26.718	0.110	-0.110	0.027	-0.027
41	25.599	25.632	25.666	0.131	-0.130	0.032	-0.032
42	24.585	24.622	24.659	0.151	-0.151	0.037	-0.037

Gear: 19   R37=30.187KΩ Accuracy: ±0.050%     B34/42=3949K Accuracy: ±0.5% (P233-22)   

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	34.120	34.158	34.196	0.111	-0.111	0.026	-0.026
35	32.744	32.774	32.803	0.090	-0.090	0.021	-0.021
36	31.429	31.451	31.473	0.070	-0.070	0.017	-0.017
37	30.172	30.187	30.202	0.049	-0.049	0.012	-0.012
38	28.958	28.978	28.998	0.070	-0.070	0.017	-0.017
39	27.797	27.822	27.847	0.090	-0.090	0.022	-0.022
40	26.686	26.716	26.746	0.110	-0.110	0.027	-0.027
41	25.625	25.658	25.692	0.131	-0.130	0.032	-0.032
42	24.610	24.647	24.684	0.151	-0.150	0.037	-0.037

Gear: 20          R37=30.218KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)    

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	34.155	34.193	34.231	0.111	-0.111	0.026	-0.026
35	32.777	32.807	32.837	0.090	-0.090	0.021	-0.021
36	31.462	31.484	31.506	0.070	-0.070	0.017	-0.017
37	30.203	30.218	30.233	0.049	-0.049	0.012	-0.012
38	28.987	29.008	29.028	0.070	-0.070	0.017	-0.017
39	27.825	27.850	27.876	0.090	-0.090	0.022	-0.022
40	26.714	26.743	26.773	0.110	-0.110	0.027	-0.027
41	25.651	25.685	25.718	0.130	-0.130	0.032	-0.032
42	24.635	24.672	24.710	0.151	-0.150	0.037	-0.037

Gear: 21          R37=30.249KΩ Accuracy: ±0.050% B34/42=3949K Accuracy: ±0.5% (P233-22)

Temperature(℃)	Resistance(KΩ)			Resistance accuracy(%)		Temperature accuracy(℃)
	minimum value	central value	maximum value	△R	-△R	△T	-△T
34	34.190	34.228	34.266	0.111	-0.111	0.026	-0.026
35	32.811	32.841	32.871	0.090	-0.090	0.021	-0.021
36	31.494	31.516	31.538	0.070	-0.070	0.017	-0.017
37	30.234	30.249	30.264	0.049	-0.049	0.012	-0.012
38	29.017	29.038	29.058	0.070	-0.070	0.017	-0.017
39	27.854	27.879	27.904	0.090	-0.090	0.022	-0.022
40	26.741	26.771	26.801	0.110	-0.110	0.027	-0.027
41	25.678	25.711	25.745	0.130	-0.130	0.032	-0.032
42	24.661	24.698	24.735	0.151	-0.150	0.037	-0.037

Note: ·In addition to the above specifications, our company can also supply products according to the special requirements of users.