HS1101LF Humidity Sensor - Capacitive RH Sensor, 1-99% RH, -60°C to 140°C

Name: HS1101LF Humidity Sensor - Capacitive RH Sensor, 1-99% RH, -60°C to 140°C
Brand: Generic
SKU: SENS-1004
Price: 369.00 INR
Availability: OutOfStock

₹369.00 (Inclusive of all taxes)

Out of Stock

The HS1101LF is a precision capacitive relative humidity sensor with a measurement range of 1-99% RH, designed for integration into microcontroller-based systems like Arduino, Raspberry Pi, and industrial PLCs. It features a wide operating temperature range from -60°C to 140°C for use in demanding environments.

Features

Capacitive sensing principle for 1% to 99% RH measurement
Wide operating temperature range from -60°C to 140°C
Fast 3-second response time and 10-second recovery from condensation
Nominal capacitance of 180pF at 55% RH for stable signal conditioning
Gold-plated leads ensure reliable, long-term electrical connections

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Description

The HS1101LF Humidity Sensor operates on a capacitive sensing principle, where changes in relative humidity alter the dielectric constant of its polymer film, resulting in a measurable capacitance shift. This provides a stable, repeatable analog signal that can be conditioned with an external oscillator circuit for precise humidity readings.

Engineered for durability, the sensor’s wide -60°C to 140°C operating temperature range allows deployment in extreme environmental conditions, from industrial freezers to high-temperature process lines. Its fast response and recovery times ensure accurate tracking of dynamic humidity changes, making it suitable for real-time control systems.

Key Features

Precision capacitive polymer sensing element for accurate RH measurement
Excellent long-term stability and repeatability across the full humidity range
Robust construction suitable for harsh industrial and automotive environments
Low power consumption and simple interface for easy system integration
Gold-plated electrode leads prevent oxidation and ensure signal integrity
Optimized performance-to-cost ratio for high-volume OEM applications

Applications

HVAC system duct humidity monitoring and control
Industrial process control in drying ovens and environmental chambers
Weather station and meteorological data logging equipment
Automotive climate control and defogging systems
Precision agriculture and greenhouse environment monitoring

Technical Specifications

Humidity Measuring Range	1 to 99% RH
Supply Voltage (Max)	10V
Nominal Capacitance (@55% RH)	180 pF (typ)
Accuracy Deviation	±2%
Response Time	3 s
Recovery Time	10 s (typ)
Operating Temperature Range	-60°C to 140°C
Lead Finish	Gold-plated
Weight	1 g

Frequently Asked Questions

What is the operating principle of the HS1101LF sensor?

The HS1101LF is a capacitive humidity sensor. Its polymer dielectric changes capacitance proportionally with ambient relative humidity. This analog capacitance change (typically 180pF at 55% RH) must be converted to a digital reading using an external oscillator or capacitance-to-digital converter circuit.

How do I interface the HS1101LF with an Arduino or microcontroller?

The sensor outputs a variable capacitance, so it cannot be read directly by a digital GPIO. You need an interface circuit, such as a 555 timer configured as an astable multivibrator, where the sensor's capacitance determines the output frequency. The microcontroller then measures this frequency to calculate the corresponding relative humidity.

What is the maximum supply voltage for this humidity sensor?

The HS1101LF has a maximum supply voltage rating of 10V. It is a passive capacitive element, so this rating applies to the excitation voltage used in the external conditioning circuit. Ensure your interface circuit operates within this limit to prevent damage to the sensing polymer.

Can this sensor be used in outdoor or high-temperature environments?

Yes, its wide operating temperature range of -60°C to 140°C makes it suitable for extreme environments, including outdoor weather stations, industrial ovens, and automotive applications. For prolonged exposure to condensation, ensure proper mounting to allow for the specified 10-second recovery time.