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参数资料
| 型号： | HTS2030SMD |
| 厂商： | Measurement Specialties Inc/MEAS France |
| 文件页数： | 5/9页 |
| 文件大小： | 0K |
| 描述： | SENSOR RH NTC CAP SIDE OPEN SMD |
| 产品目录绘图： | HTS2030SMD Top |
| 标准包装： | 76 |
| 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) |
HTS2030SMD – Temperature and Relative Humidity Sensor
?
Steinhart-Hart coefficients
According to the equation below, the Steinhart-Hart coefficients for the operating temperature range for
HTS2030SMD 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= 9.94805E-04)
Constant value (b= 2.46791E-04)
Constant value (c= 1.10298E-07)
?
Temperature Interface circuit
Concerning the temperature sensor of the HTS2030SMD, 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
HTS2230 temperature sensor interfacing circuit. Rbatch is chosen to be equal to NTC @25°C to get: Vout =
Vcc/2 @25°C. There are two proposal configurations: If Rbatch is connected to Vcc and NTC to Ground, it leads
to a negative slope characteristic (Pull-Down Configuration). For a positive slope, Rbatch and NTC resistors
have to be switched (Pull-Up Configuration).
Pull-Up Configuration
VCC (mV)
Rbatch
10k
Pull-Down Configuration
VCC (mV)
HTS2030SMD
NTC 10k @25°C
HTS2030SMD
NTC 10k @25°C
Vout (mV)
Rbatch
10k
Vout (mV)
V OUT ( mV ) =
Vcc ( mV ) * NTC HTS 2030 SMD ( ? )
R batch ( ? ) + NTC HTS 2030 SMD ( ? )
V OUT ( mV ) =
Vcc ( mV ) * R batch ( ? )
R batch ( ? ) + NTC HTS 2030 SMD ( ? )
HTS2030SMD HPC055_H
www.meas-spec.com
5/9
October 2012
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