CWF系列风华NTC热敏电阻温度传感器规格书

传感器SENSORSSENSOR MANUALTEMPERATUREMEASUREMENTCONTROLSHANGHAI BENMU INDUSTRY CO., LTD.上海本牧实业有限公司QUICK LINKSCONNECTINGSENSOR TECH电阻值耗散常数ResistanceThermal dissipation constantB值热时间常数B constantThermal time constant热敏电阻的电阻值R和绝对温度T之间，有以下近似关系。

Between resistance R and absolute temperature T, there is the following approximate relationship.11T1T2根据公式、可以求证任意温度T时的热敏电阻R。

Thermistor resistance R at any temperature T can be calculated from equation (1)R1: Resistance (Ω) at absolute temperature T1 (K)绝对温度T1 (K) 时的电阻值R2: Resistance (Ω) at absolute temperature T2 (K)绝对温度T2 (K) 时的电阻值A thermistor is "a thermally sensitive resistor"that is a semiconductor whose resistance varies significantly with temperature.In general,there are two types thermal senstive resistor.One is PTC (Postive Temperature Coefficient);the resistance increases as temperature increases.The other is NTC (Negative Temperature Coefficient);the resistance decreases as temperature increases.The following description is applicable only to NTC thermistors.热敏电阻是应用于信息系统与控制系统的敏感元件，主要用于对温度的测量、控制、保护及用作加热器。

NTC热敏电阻的主要技术参数说明NTC热敏电阻（Negative Temperature Coefficient Thermistor）是一种温度敏感元件，其电阻值随温度的变化而变化。

它在温度测量、温度补偿、温度控制等领域中得到广泛应用。

下面是NTC热敏电阻的主要技术参数说明：1. 电阻值（Resistance Value）：NTC热敏电阻的电阻值在不同温度下会有不同的取值，通常以欧姆（Ω）为单位表示。

常见的电阻值有1Ω、10Ω、100Ω等。

2. 温度系数（Temperature Coefficient）：温度系数是指NTC热敏电阻的电阻值随温度变化的速率。

一般使用ppm/℃（每百万分之一度每摄氏度）来表示。

温度系数越大，说明NTC热敏电阻对温度的敏感性越高。

3. 工作温度范围（Operating Temperature Range）：NTC热敏电阻能够正常工作的温度范围。

一般来说，工作温度范围为-40℃至+125℃。

4. 额定功率（Rated Power）：NTC热敏电阻能够长时间连续工作的功率。

额定功率以瓦特（W）为单位表示。

通常的额定功率有0.1W、0.25W、0.5W等。

5. 热时间常数（Thermal Time Constant）：热时间常数是NTC热敏电阻从一个温度到另一个温度所需的时间。

热时间常数可以用来描述NTC热敏电阻的响应速度和惯性。

热时间常数越小，NTC热敏电阻的响应速度越快。

6. 稳定偏差（Stability Tolerance）：稳定偏差是指NTC热敏电阻在标准温度下的电阻值与额定值之间的差异。

通常以百分比（%）来表示。

稳定偏差越小，说明NTC热敏电阻的稳定性越好。

7. 破坏温度（Maximum Operating Temperature）：NTC热敏电阻能够承受的最高温度。

超过破坏温度，NTC热敏电阻可能会发生损坏。

8. 尺寸（Size）：NTC热敏电阻的尺寸对于具体应用场景和安装要求非常重要。

APPLICATIONSTemperature test in all kinds of air-condition,refrigerator,water boiler,microwave oven.PART NUMBERINGFEATURESHigh precision and high stability Quick temperature response Resistant to heat shock Moisture resistantExcellent quality and high stabilityGuang Dong Fenghua Advanced Technology (Holding)Co.,LTD.codeNTCNTC temperature sensors code25Rated zero-power resistance R unit:The first two are significant figure of resistance and the third one expresses number of following zeros25FH -CWFXXXX XXXXXX /XXXXX%Tolerance of R %25B B value CodeB%Tolerance of B value %BB value Temperature CodeLength of the sensor unit:mmTermination shape codeNTCNTC THERMISTOR TEMPERATURE SENSORSAPPEARACE AND DIMENSIONSCPour typetype CSHELL PARAMETERE EPOXY TYPE TYPE ENOTE We can absolutely design NTC Sensors as your requirement.shellPVCR 1010Rated zero-power resistanceR 10100.5%1%2%3%5%Resistance tolerance 0.5%1%2%3%5%.B 25/5025/8525005000KB Constant 25/50or 25/852*******K.B0.5%1%2%3%5%.Tolerance of B-constant0.5%1%2%3%5%.40100Operating temperature40100C2.04.0mw/E3.04.5mw/.Dissipation factor (in still air)type C 2.0 4.0mw/type E3.04.5mw/.C30s E 20s.Thermal time constant (in still air)type C30s type E 20s.R TR T characteristics25252626PERFORMANCE PARAMETERNTCNTC THERMISTOR TEMPERATURE SENSORSR T characteristicsNOTE We can absolutely design NTC sensors as your requirement.1.R 251.Rated zero-power resistance (R )The zero-power resistance at 25(298.15K).2.BB=ln(R /R )/(1/T1-1/T2)R T1RT22525T1T2T1T2THE MAIN CHARACTERISTICS2.B valueB value is expressed by the following equation:B=ln(R /R )/(1/T1-1/T2)R Resistance at T1(K).R Resistance at T2(K).363.2%C=C/3.Thermal time constantThe time necessary for a thermistor to vary its temperature by 63.2%of the total difference its initial temperature and its final temperature when it is subjected to a temperature step under zero-power conditions.4=P/T4.Dissipation factorThe quotient of the change in power dissipation in a thermistor and the Resultant temperature change of the element.T1T2T1T25.=1/R dR /dT =-B/TT R TT KBB(K)5.Temperature coefficient at zero-power of the resistance At a specific temperature Tis a ratio of the zero-power resistance change with temperatureand the zero-power resistance.=1/R dR /dT =-B/T TTT T TT TTTT T 22NTCNTC THERMISTOR TEMPERATURE SENSORSRELIABILITY CHARACTERISTICSFH-CWF502F3470FA/B(25/50)3470K1%R255K1%NTCNTC THERMISTOR TEMPERATURE SENSORSATTENTIONS OF ORDERPlease comment the next if you want to make some order:1APPLICATIONSuch as temperature survey,control,compensating and so on.2SERVICE ENVIROMENTSuch as atmosphere,water,moisture and so on.3THE WORKING RANGE OF TEMPERATURE()()4ITEM NAME FORM AND SIZE5THE RESISTANCE VALUEK%at()6B THE VALUE OF BB(/)=()K%7THERMAL TIME CONSTANT()()()S()S()enviroment8DISSIPATON FACTORmW/9OTHER SPECIAL TECHNICAL CONDITIONSAttentions:If the service request you want is out of the list parameter,please contact with us,and we will design and manufact as your requirement.。

CWFCWF Precision NTC Thermistor Probes for Temperature MeasurementThe CWF series NTC Thermistors are supplied in 5 basic styles of enclosures designed to facilitate installation in a wide variety of applications. PVC leads are applied to a precision, high-reliability NTC thermistor, insulated with heat conductive water resistant materials and potted into any of a wide variety of probe bodies.CWF thermistors are also available with custom housings or custom lead lengths for remote sensing and temperature control in difficult conditions.Also see the Cantherm Thermistor Probe Brochure for additional models.CWFCWF1 (Ethoxyline dipped)Characteristics: Moisture resistant, good insulation, high reliability, small time constant, quick responses.Available Wire Types: AWG 24#, 26#, 28#,30#, PVCApplications: Household air-conditioning, refrigeration and many others.CWF2 (Packaged in aluminum, copper, or stainless steel probe body)Characteristics: High resistance to thermal shock, moisture resistant, strong and secure structure, high dissipation coefficient, the test current can be higher than that of the ethoxyline resin-package.Standard Wire Type: AWG 24#, 26#, 28#,30#, PVCApplications: Refrigeration, air-conditioning, water heaters, drinking fountains, and more.CWF3 (Plastic body)Characteristics: Good dimensional tolerances, good heat resistance and moisture protection, high voltage resistance.Available Wire Types: AWG 24#, 26#, 28#,30#, PVCApplications:Air-conditioning, refrigeration, and more.ABApplications• Heating, ventilation & air conditioning• Temperature regulation and measurement • Automotive electronics • Water heaters• Household appliances such as refrigerators, water coolers, dishwashers and many othersCharacteristics• Wide variety of installation fixtures and probes are available to suit your needs.• Small size and fast response (temperature coefficient of resistance can reach- (2~5%/°C)• Long-term stability and reliability (yearly drift of ≤1%)• Excellent tolerance and interchangeability (the accuracy of R and B value can be ±1%)• Double layer packaging provides excellent insulation and high strength and impact resistance.• Dissipation constant type 1 package ≥2.0mW/°C, type 2 package ≥4.0mW/°C • Time constant of ≤15S to 70SCWF4 (Sheet metal attachment fixtures)Characteristics: Wide variety of fixtures, suitable for most applications.Applications:Fan control, industrial temperature controllers, and more.CWF5 (Custom probes)Characteristics: Small time constant, fast response, flexible and secure.Applications: Water heaters, electronic thermometers, and more.* Also refer to the Cantherm Custom NTC Thermistor Probe Brochure .4A4B4D4C8415 Mountain Sights Avenue • Montreal (Quebec), H4P 2B8, CanadaTel: (514) 739-3274 • 1-800-561-7207 • Fax: (514) 739-2902 • E-mail: sales@NTC Temp sensor Package Option1- Dipped ethoxyline resin (ex. 1S1)2- Aluminum,copper, or stainless steel housing (ex. 2S1) 3- Plastic body (ex. 3AS1)4- Sheet metal attachment fixtures (ex. 4B) 5- Special probes (ex. 5B)The Rated Resistance at 25ºCExample:103 10×103 10000 =10K The Precision Symbol of Rated Resistance F ±1 G ±2 H ±3 J ±5 B value 25/50B value example: 3380KCWF – 103 J 3380分销商库存信息:CANTHERMCWF1B104H3950CWF1B103H3380CWF1B103G3380 CWF1B104F3950CWF1B103F3380CWF4B103G3380 CWF3AA503G3950CWF3AA103G3380CWF1B104J3950 CWF1B104G3950CWF1B103J3380CWF3AA153F3470 CWF3AA202F3470CWF3AA222F3470CWF3AA223F3470 CWF3AA224F4150CWF3AA272F3100CWF3AA332F3470 CWF3AA333F3470CWF3AA472F3470CWF3AA473F3950 CWF3AA474F4300CWF3AA683F3950CWF4B153F3470 CWF4B202F3470CWF4B222F3470CWF4B223F3470 CWF4B224F4150CWF4B272F3100CWF4B332F3470 CWF4B333F3470CWF4B472F3470CWF4B473F3950 CWF4B474F4300CWF4B503F3950CWF4B683F3950 CWF1A103F3380CWF1A104F4150CWF1A503F3950 CWF4B104G4150CWF3AA104G4150。

广州维智电子科技有限公司
N T C 热 敏 电 阻 规 格 书
型号:AT-103F3470F
1.概要
本规格书详细说明了AT 型NTC 热敏电阻的有关性能、结构尺寸和主要试验条件。

2.热敏电阻特性
项目 代号 特性值 单位 精度 2.1 阻值 R25℃ 10 K Ω ±1% 2.2 B 值 B25/85 3470 K ±1% 2.3 时间常数 τ 10 Sec Max 2.4 耗散系数
δ
mW/℃
Min
3.工作条件
:-40~100℃ 3.2最大电流:1.0mA 3.3最大功率:5mW
NO. 材质、规格
1. 热敏电阻芯片
2.
环氧树脂
3. Φ
5.电阻对应温度分度表见附页
６.1 温度循环 -30℃X5min →25℃X5min
25℃X5min ← +100℃X5min 500cycles ΔR/R ≤2%
６.2 高温储藏 placed for 1000hours,at 100℃ ΔR/R ≤2%
６.3 低温储藏
placed for 1000hours,at -30℃
ΔR/R ≤2%
６.4 高温高湿
40℃-95%R.H,placed for 1000 hours ΔR/R ≤2%
６.5 漂移试验
ΔR/R ≤2%
若加热缩套管时,注意电阻包封头所受温
度应≤250℃,焊枪出风口应保持适当距 离,避免高温对电阻本体的过度热冲击,导 致阻值漂移. 文件编号 版本更改 日期 编制 审批
WZBF07 A。