Relative Temperature and Humidity Sensor - HTM2500/HTM2500LF

  • Relative Temperature and Humidity Sensor
  • Relative Temperature and Humidity Sensor
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• Humidity Measuring Range: 1 ~ 99%RH
• Temperature Measuring Range: -40 ~ 85°C
• Relative Humidity Accuracy (10 to 95% RH): ±3 %RH
• Supply Voltage: 4.75 - 5.25Vdc
• Current consumption: 0.4mA
• Temperature Coefficient (10 to 50°C): +0.1%RH/°C
• Humidity Operating Range: 0 to 100 % RH
• Temperature Operating: -30 to 70 °C

  • Model Number: HTM2500/HTM2500LF
  • Data Sheet: Date Sheet File
Quantity:
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Product Specification

HTM2500/HTM2500LF Relative Temperature and Humidity Sensor

    • Hermetic Housing
    • Humidity calibrated within +/-2% @55%RH
    • Temperature measurement through NTC 10kOohms +/-3% direct output
    • Small size product
    • Typical 1 to 4 Volt DC output for 0 to 100%RH at 5Vdc

HTM2500LF Relative Temperature and Humidity Sensor DESCRIPTION
Based on the rugged HTS2010 humidity / temperature sensor, HTM2500 is a dedicated humidity and temperature transducer designed for OEM applications where a reliable and accurate measurement is needed. Direct interface with a micro-controller is made possible with the module's humidity linear voltage output.

HTM2500LF Relative Temperature and Humidity Sensor FEATURES
• Full interchangeability
• High reliability and long term stability
• Not affected by water immersion
• Ratiometric to vlotage supply
• Suitable for 3 to 10 Vdc supply voltage
Humidity Sensor Specific Features
• Instantaneous de-saturation after long periods in saturation phase
• Fast response time
• High resistance to chemicals
• Patented solid polymer structures
Temperature Sensor Specific Features 
• Stable
• High sensitivity

HTM2500LF Relative Temperature and Humidity Sensor APPLICATIONS
• Industrial
• Process control
• Hygrostat
• Data logger

HTM2500LF Relative Temperature and Humidity Sensor PERFORMANCE SPECS
MAXIMUM RATINGS

Ratings
Symbol
Value
Unit
Storage Temperature
Tstg
-40 to 85
°C
Storage Humidity
RHstg
0 to 100
% RH
Supply Voltage (Peak)
Vs
12 Vdc
Humidity Operating Range
RH
0 to 100
% RH
Temperature Operating
Ta
-30 to 70
°C
Peak conditions: less than 10% of the operating time

ELECTRICAL CHARACTERISTICS
(Ta=23°C, Vs=5Vdc +/-5%, RL>1M unless otherwise stated)
Humidity Characteristics 
Symbol
 Min 
Typ
 Max 
Unit 
Humidity Measuring Range
RH
1
99 %RH
Relative Humidity Accuracy (10 to 95% RH)
RH

+/-3
+/-5
%RH
Supply Voltage
V
4.75 5.00 5.25 Vdc
Nominal Output @55%RH (at 5Vdc)
Vout
2.42 2.48 2.54 V
Current consumption
Ic

0.4 0.4 mA
Temperature Coefficient (10 to 50°C)
Tcc

+0.1

%RH/°C
Average Sensitivity from 33% to 75%RH
Vout/RH

+25

mV/%RH
Sink Current Capability (RL=15kΩ)
Is


300 µA
Recovery time after 150 hours of condensation
tr

10

s
Humidity Hysteresis


+/-1.5

%RH
Long term stability
T

+/-0.5

%RH/yr
Time Constant (at 63% of signal, static) 33% to 76%RH
τ

5

s
Output Impedance
Z
70
Ω

(Ta=25°C)

Temperature Characteristics
Symbol
Min
Typ
 Max 
 Unit 
Nominal Resistance @25°C 
R

10
kΩ
Beta value: B25/100
β
3600
3730 3800
Temperature Measuring Range
Ta
-40
85 °C
Nominal Resistance Tolerance @25°C
RN

2 3 %
Beta Value Tolerance
β

3
%
Response Time
τ

10
s

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