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Relative Humidity Sensor - HM1520/HM1520LF

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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:

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Product Specification

HM1520/HM1520LF Relative Humidity Sensor 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.

HM1520/HM1520LF Relative Humidity Sensor 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.

HM1520/HM1520LF Relative Humidity Sensor Applications

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

HM1520/HM1520LF Relative Humidity Sensor 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

HM1520/HM1520LF Relative Humidity Sensor 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