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参数资料
| 型号： | HTM2500LF |
| 厂商： | Measurement Specialties Inc/MEAS France |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | SENSOR RH CAP NTC THERM VOUT |
| 产品目录绘图： | HTM2500 Side |
| 标准包装： | 20 |
| 传感器类型： | 湿度和温度 |
| 输出类型： | 模拟电压 |
| 产品目录页面： | 2819 (CN2011-ZH PDF) |
| 其它名称： | HTM2500 HTM2500-ND |
HTM2500LF – Temperature and Relative Humidity Module
?
Steinhart-Hart coefficients
According to the equation below, the Steinhart-Hart coefficients for the operating temperature range for
HTM2500LF thermistor are:
1
T
= a + b * ln( R ) + C * ln( R ) * ln( R ) * ln( R )
R
NTC resistance in
at temperature T in K
T
a
b
c
Temperature in K
Constant value (a = 8.54942E-04)
Constant value (b = 2.57305E-04)
Constant value (c = 1.65368E-07)
?
Temperature Interface Circuit
Concerning the temperature sensor of the HTM2500LF, the following measuring method described below is
based on a voltage bridge divider circuit. It uses only one resistor component (Rbatch) at 1% to design
HTM2500LF temperature sensor interfacing circuit.
Rbatch is chosen to be equal to NTC @25°C to get: V out = Vcc/2 @25°C.
The proposal method connects Rbatch to Vcc (5Vdc) and NTC to Ground. It leads to a negative slope
characteristic (Pull-Up Configuration).
W2
VCC
V OUT ( mV ) =
Vcc ( mV ) * NTC HTM 2500 LF ( ? )
R batch ( ? ) + NTC HTM 2500 LF ( ? )
Temp (°C)
R(
)
Pull-up Configuration
Vout (mV)
Rbatch
10k
W4
NTC Resistance output
-40
-30
-20
-10
0
10
195652
113347
68237
42506
27219
17926
4757
4595
4361
4048
3657
3210
HTM2500LF NTC
10k @25°C
HTM2500LF HPC169 Rev C
Vout (mV)
W1
Ground
www.meas-spec.com
20
25
30
40
50
60
70
80
12081
10000
8315
5834
4161
3014
2228
1669
2736
2500
2270
1842
1469
1158
911
715
October 2012
6/9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HTM250JR-73-40K | 功能描述:RES METL FILM 40K OHM 2.5W 5% AX RoHS:是 类别:电阻器 >> 通孔电阻器 系列:HTM 产品变化通告:Global Part Number Change 9/Aug/2010 标准包装:1,000 系列:RSF 电阻（欧姆）:620 功率（瓦特）:2W 复合体:金属氧化物薄膜 特点:耐燃 温度系数:±200ppm/°C 容差:±2% 封装/外壳:轴向 尺寸/尺寸:0.197" 直径 x 0.591" L（5.00mm x 15.00mm） 高度:- 端子数:2 包装:带卷 (TR) 其它名称:RS 2 620 2% RRS 2 620 2% R-NDRS26202%RRS26202%R-NDRS2620GRRS2620GR-ND |
| HTM250JR-73-70K | 功能描述:RES METL FILM 70K OHM 2.5W 5% AX RoHS:是 类别:电阻器 >> 通孔电阻器 系列:HTM 产品变化通告:Global Part Number Change 9/Aug/2010 标准包装:1,000 系列:RSF 电阻（欧姆）:620 功率（瓦特）:2W 复合体:金属氧化物薄膜 特点:耐燃 温度系数:±200ppm/°C 容差:±2% 封装/外壳:轴向 尺寸/尺寸:0.197" 直径 x 0.591" L（5.00mm x 15.00mm） 高度:- 端子数:2 包装:带卷 (TR) 其它名称:RS 2 620 2% RRS 2 620 2% R-NDRS26202%RRS26202%R-NDRS2620GRRS2620GR-ND |
| HTM2A60 | 制造商:HUASHAN 制造商全称:HUASHAN 功能描述:NON INSULATED TYPE TRIAC (TO-126ML PACKAGE) |
| HTM300P | 制造商:JCS HI-TORQUE 功能描述:HI-TORQUE H/CLIP,270-300 |
| HTM32BRP | 功能描述:两端交流开关元件 30V-34V MINIMELF DIAC RoHS:否 制造商:STMicroelectronics 转折电流 VBO:45 V 安装风格:SMD/SMT 封装 / 箱体:SOT-23 封装:Reel |
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