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Temperature Humidity Sensor Module - HTF3223LF

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• Size and connector type match existing humidity modules.
• Stable, linear proportional frequency output from 10 to 95% RH.
• Calibrated within +/- 5% RH @ 55% RH.
• Optional 10 K +/- 3% NTC temperature sensor (HTF 3223)
• Stable characteristics with temperature.
• High reliability and long term stability

Model Number: HTF3223LF
Data Sheet:

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Product Specification

HTF3223LF Temperature Humidity Sensor Module Description
Based on the rugged HS1101LF humidity sensor, HTF3223LF is a dedicated humidity and temperature transducer designed for OEM applications where a reliable and accurate measurement is needed. It features a miniature connector for easy, cost-effective mechanical mounting. Direct interface with a micro-controller is made possible with the module’s linear frequency output.

HTF3223LF Temperature Humidity Sensor MAIN FEATURES
• Size and connector type match existing humidity modules.
• Stable, linear proportional frequency output from 10 to 95% RH.
• Calibrated within +/- 5% RH @ 55% RH.
• Optional 10 K +/- 3% NTC temperature sensor (HTF 3223)
• Stable characteristics with temperature.
• High reliability and long term stability

HUMIDITY SENSOR SPECIFIC FEATURES
• Instantaneous de-saturation after long periods in saturation phase.
• Fast response time.
• High resistance to chemicals.
• Not affected by water immersion.
• Patented solid polymer structure.

TEMPERATURE SENSOR SPECIFIC FEATURES
• High quality thermistor
• Stable
• High sensitivity

HTF3223LF Temperature Humidity Sensor MAXIMUM RATINGS

Ratings	Symbol	Value	Unit
Storage Temperature	Tstg	-40 to 85	°C
Storage Humidity Range	RHstg	0 to 100	% RH
Supply Voltage (Peak)	Vs	7	Vdc
Humidity Operating Range	RH	0 to 99	% RH
Temperature Operating Range	Ta	-30 to 80	°C

HTF3223LF Temperature Humidity Sensor CHARACTERISTICS

Humidity sensor (Ta = 25°C, Vs = 5.0 Vdc +/- 5%, R L > 100 KΩ unless otherwise stated)

Characteristics	Symbol	Min.	Typ.	Max.	Unit.
Humidity metrology range	RH	10		95	% RH
Relative Humidity accuracy (10 to 95 % RH)	RH		+/- 5	+/- 10	% RH
Voltage supply	Vs	4.75	5.0	5.25	VdC
Nominal output @ RH = 55 %	Fout	8670	8750	8830	Hz
Current consumption	Ic			0.1	mA
Temperature coefficient (0 to 60 °C)	Tcc		+/- 0.1		% RH/°C
Averaged Sensitivity from 33 % to 75 % RH	∆F out /∆RH	-16	- 18	-19	Hz/% RH
Sink current capability	Is		100		µA
Recovery time after 150 hours of condensation	t		10		s
Humidity Hysteresis			+/-1.5		% RH
Long term stability			0.5		% RH/yr
Response time (33 to 76% RH static @63 %)	τ		10		s

Temperature sensor (Ta = 25°C)

Characteristics	Symbol	Min.	Typ.	Max.	Unit.
Nominal resistance @ 25°C			10		kΩ
Beta value : B25/100	B	3600	3730	3800
Temperature measuring range	Ta	- 30		80	°C
Nominal Resistance Tolerance	Rn		2	3	%
B value tolerance	B		3		%
Response Time	τ		10		s