Relative Humidity Sensor - HM1520/HM1520LF

Tubular form for through wall mounting
Not affected by water condensation
Full interchangeability
Typical 1 to 1.6 Volt DC output for 0 to 20% RH at 5 V DC supply
Calibrated, linear voltage for easy electronic interface
Controlled temperature dependency
Ratiometric to voltage supply

  • Model Number: HM1520/HM1520LF
  • Data Sheet: Date Sheet File
Quantity:
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  • Relative Humidity Sensor
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Product Specification

Relative Humidity Sensor HM1520/HM1520LF Description

Based on the rugged HS1101LF capacitive humidity sensor, HM1520LF is a dedicated humidity transducer designed for measurements at low humidity. Direct measurement of dew point or water concentration can be easily obtained in really cost effective conditions. Direct interface with a micro-controller is made possible with the module’s linear voltage output.


Relative Humidity Sensor HM1520/HM1520LF Main features

•  Tubular form for through wall mounting 
•  Not affected by water condensation 
•  Full interchangeability 
•  Typical 1 to 1.6 Volt DC output for 0 to 20% RH at 5 V DC supply 
•  Calibrated, linear voltage for easy electronic interface 
•  Controlled temperature dependency 
•  Ratiometric to voltage supply  


Humidity sensor specific features
•  No affected by long period at low humidity values.
•  Patented solid polymer structure.
•  High resistance to chemicals.
•  Fast response time.


Relative Humidity Sensor HM1520/HM1520LF Applications

•  telecommunication environment 
•  Automotive cabin air control
•  Home appliances
•  Agriculture and environment protection 
•  Industrial process control systems


Relative Humidity Sensor HM1520/HM1520LF Maximum ratings

Ratings

Symbol

Value

Unit

Supply Voltage (Peak)

Vs

12

Vdc

Operating Range (see graph below)

RH

0 to 100

% RH

Operating Range (Dew Point)

Td

-50 to 30

°C

Operating Range in Temperature

Ta

-30 to 60

°C


Relative Humidity Sensor HM1520/HM1520LF Characteristics
(Vs = 5.0Vdc , RL > 1 MΩ otherwise stated)

Characteristics

Symbol

 Min 

Typ

 Max 

Unit

Humidity measuring range / Ta–30 to 60°C

RH

1

 

99

%RH

Relative Humidity accuracy(1-20%RH)at 23°C

RH

 

+/-2

+/-3

%RH

Relative Humidity accuracy at 55% RH at 23°C

RH

 

+/-5

 

%RH

Voltage supply

Vs

4.75

5.00

5.25

V

Nominal output @ RH = 10 % / Ta 25°C

Vout

1.17

1.24

1.31

V

Current consumption

Ic

 

0.4

0.8

mA

Temperature coefficient(10 to 50°C and 1 to 20% RH)

Tcc

 

< 0.1

 

%RH/°C

Averaged Sensitivity from 5% to 10 % RH

∆mV/%RH

 

+26

 

mV/%RH

Output Impedance

Z

 

70

 

Ohms

Sink current capability (R L  = 15 kohm)

Is

 

 

300

µA

Humidity Hysteresis

 

 

+/-1.5

 

% RH

Long term stability

 

 

0.5

 

%RH/yr

Response time (5 to 10% RH, static, @63%)

τ

 

5

 

s

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