Industry-Verified Manufacturing Data (2026)

Humidity Sensor

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Humidity Sensor used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Humidity Sensor is characterized by the integration of Hygroscopic Sensing Element and Electrode Grid. In industrial production environments, manufacturers listed on CNFX commonly emphasize Polymer-based hygroscopic film construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A device that measures and monitors the amount of water vapor present in the air or other gases.

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Product Specifications

Technical details and manufacturing context for Humidity Sensor

Definition
A critical component within an Environmental Control Unit that detects and quantifies humidity levels to enable precise environmental regulation, ensuring optimal conditions for processes, storage, or equipment operation.
Working Principle
Typically operates by measuring changes in electrical capacitance, resistance, or thermal conductivity of a hygroscopic material as it absorbs or releases moisture from the surrounding environment.
Common Materials
Polymer-based hygroscopic film, Ceramic substrate, Metal electrodes
Technical Parameters
  • Measurement range and accuracy of relative humidity (%RH) Standard Spec
Components / BOM
  • Hygroscopic Sensing Element
    Absorbs and releases moisture from the air, changing its electrical properties proportionally to humidity.
    Material: Polymer or ceramic
  • Electrode Grid
    Measures the change in capacitance or resistance of the sensing element.
    Material: Gold or silver
  • Protective Housing
    Shields the sensing element from contaminants, dust, and condensation while allowing air exchange.
    Material: Plastic or metal mesh
Engineering Reasoning
0-100% RH at -40°C to 85°C ambient temperature, 0-5V DC output
Condensation at 100% RH causing sensor element short-circuit, or exposure to >95% RH for >24 hours leading to permanent calibration drift >±5%
Design Rationale: Capacitive polymer dielectric breakdown at dew point (saturation vapor pressure 6.11 hPa at 0°C), hygroscopic swelling causing mechanical stress >2 MPa on MEMS structure
Risk Mitigation (FMEA)
Trigger Condensation forming on sensing element at dew point temperature differential >3°C
Mode: Capacitance measurement error >±15% due to water film dielectric constant ε=80 vs air ε=1
Strategy: Integrated Peltier heater maintaining sensor 5°C above ambient dew point with PID control (Kp=2.5, Ki=0.1, Kd=0.5)
Trigger Ionic contamination from airborne salts (NaCl, KNO3) at >50 μg/m³ concentration
Mode: Polymer dielectric polarization loss increasing leakage current >1 μA at 1 MHz
Strategy: Nafion membrane filter with 0.3 μm pore size and electrostatic precipitation at -5 kV bias

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Humidity Sensor.

industrial humidity sensor for electronics polymer film humidity sensor manufacturing ceramic substrate moisture detection device humidity monitoring for optical product assembly hygroscopic sensing element BOM

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Environmental Control Unit
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Humidity Control Module
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Humidifier
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Humidity Control System
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Environmental Sensor Array
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar
flow rate: 0 to 5 m/s
temperature: -40°C to 85°C
humidity range: 0% to 100% RH
Media Compatibility
✓ Clean air HVAC systems ✓ Industrial dryers and ovens ✓ Greenhouse climate control
Unsuitable: High-concentration corrosive gas environments (e.g., chlorine, ammonia)
Sizing Data Required
  • Required measurement accuracy (% RH)
  • Operating temperature range
  • Response time requirement

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Sensor drift/calibration loss
Cause: Contamination from dust, oils, or chemicals accumulating on sensing element, altering its electrical properties and response to humidity changes.
Electronic circuit failure
Cause: Moisture ingress or condensation inside the housing leading to corrosion, short circuits, or component degradation, often due to inadequate sealing or extreme environmental conditions.
Maintenance Indicators
  • Inconsistent or erratic readings compared to known reference values or other sensors in the same environment
  • Visible condensation inside the sensor housing or corrosion on electrical connectors/exposed components
Engineering Tips
  • Install sensors in locations with adequate airflow and minimal exposure to direct contaminants; use protective filters or shrouds where contamination risk is high
  • Implement regular calibration checks against traceable standards, especially after environmental changes or exposure events, and maintain proper sealing integrity of housings

Compliance & Manufacturing Standards

Reference Standards
ISO 4677-1:1985 - Atmospheres for conditioning and testing - Determination of relative humidity ANSI/ASHRAE 41.6-2014 - Standard Method for Measurement of Moist Air Properties DIN EN 60751:2008 - Industrial platinum resistance thermometers and platinum temperature sensors
Manufacturing Precision
  • Relative Humidity Accuracy: +/-2% RH
  • Response Time: 8 seconds typical (for 63% step change)
Quality Inspection
  • Calibration Verification against NIST-traceable standards
  • Environmental Stress Testing (temperature cycling, humidity cycling)

Factories Producing Humidity Sensor

Verified manufacturers with capability to produce this product in China

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✓ 98% Supplier Capability Match Found

S Sourcing Manager from Singapore Feb 13, 2026
★★★★★
"The technical documentation for this Humidity Sensor is very thorough, especially regarding technical reliability."
Technical Specifications Verified
P Procurement Specialist from Germany Feb 10, 2026
★★★★☆
"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Humidity Sensor so far. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Brazil Feb 07, 2026
★★★★★
"Testing the Humidity Sensor now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

9 sourcing managers are analyzing this specification now. Last inquiry for Humidity Sensor from Vietnam (1h ago).

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Frequently Asked Questions

What makes this humidity sensor suitable for computer and electronics manufacturing?

Our sensor uses a polymer-based hygroscopic film and ceramic substrate construction that provides stable, accurate readings in controlled manufacturing environments, preventing moisture damage to sensitive electronic components during production and assembly.

How does the hygroscopic sensing element work in this humidity sensor?

The polymer-based hygroscopic film absorbs or releases water vapor based on ambient humidity, changing its electrical properties. This change is measured by the metal electrode grid on the ceramic substrate, converting moisture levels into precise electrical signals.

What are the key applications for this sensor in optical product manufacturing?

This humidity sensor is essential for maintaining optimal conditions in clean rooms and assembly areas for optical products like lenses, cameras, and displays, where moisture control prevents fogging, condensation, and material degradation during production.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Computer, Electronic and Optical Product Manufacturing sector.

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