MH-Z1911A NDIR CO₂ Module
Compact carbon dioxide module for indoor ventilation demand monitoring and fresh-air equipment integration.
- Target CO₂
- Range 400–10000 ppm optional
- Principle NDIR
- Output UART / PWM
WINSEN FRESH AIR & VENTILATION SENSING
Fresh Air & Ventilation Sensor Solutions
Build smarter fresh-air and ventilation equipment with Winsen CO2, PM2.5, VOC, formaldehyde, temperature and humidity sensors. Explore sensor modules for residential fresh-air systems, ERV/HRV equipment, ventilation fans and intelligent air exchange control.
Ventilation Demand Monitoring
Use indoor CO₂ data to inform ventilation demand evaluation.
Air Pollution Awareness
Monitor PM and gaseous air quality according to the equipment design.
Smart Ventilation Control
Provide environmental data for OEM-defined ventilation strategies.
Flexible OEM Integration
Choose individual sensor modules or integrated IAQ platforms.
INTELLIGENT VENTILATION
Why Air Quality Sensors Matter in Fresh Air Systems
Fresh-air ventilation systems introduce outdoor air and remove indoor air to support building ventilation. Sensor data helps equipment manufacturers respond to changing indoor conditions while considering outdoor pollution, filtration and environmental comfort.
A Smarter Approach to Indoor and Outdoor Air
Indoor ventilation demand and outdoor air quality are related but different monitoring objectives. A well-designed ventilation system evaluates the measurements that are relevant to each function.
- Indoor CO₂: provides information about ventilation demand in occupied spaces.
- Particle monitoring: helps assess airborne particle levels and can support filtration-related functions.
- VOC and HCHO: provide additional information about selected indoor gaseous pollutants.
- Temperature and humidity: support indoor environmental monitoring and ventilation equipment controls.
- Outdoor air conditions: may be considered when designing intake air quality and filtration strategies.
Important:
A standard indoor PM or gas sensor module
should not automatically be considered suitable
for direct outdoor exposure. Outdoor sampling
requires verification of operating temperature,
humidity, condensation protection, enclosure
and environmental durability.
VENTILATION SENSING PARAMETERS
Which Sensors Does a Fresh Air Ventilation System Need?
Sensor configuration depends on whether the equipment is designed for basic ventilation control, multi-parameter air quality monitoring or integrated fresh-air management.
Carbon Dioxide
CO₂ sensors help ventilation controllers evaluate changes in ventilation demand in occupied indoor environments.
MH-Z1911A / PAS CO₂ / MH-Z19EPM1.0 / PM2.5 / PM10
Particle measurements provide information about fine airborne particulate pollution and can support air-quality monitoring and filtration decisions.
ZH10-F / ZH10-VHTVOC & Air Quality
Semiconductor air-quality modules respond to selected organic volatile gases or broader gaseous pollution changes in indoor environments.
ZPS20 / ZP07Formaldehyde
Dedicated electrochemical HCHO sensors support formaldehyde measurement in fresh-air equipment with specific HCHO monitoring functions.
ZE08K-CH2O / ZE08-CH2OTemperature & Humidity
Environmental sensing can provide inputs for comfort monitoring, humidity control and ERV/HRV equipment management.
ZS13A / ZS21Multi-Parameter IAQ
Integrated sensor modules combine several air-quality functions to simplify product-level integration in smart ventilation equipment.
ZPHS01C / ZH10-VHT
VOC vs. formaldehyde:
Broad semiconductor VOC responses
are not equivalent to dedicated,
selective formaldehyde concentration
measurement. Select an HCHO-specific
module when formaldehyde concentration
is a defined product requirement.
FROM SENSING TO CONTROL
How Sensors Support Smart Fresh Air Ventilation Control
Environmental sensors provide measurement signals to the ventilation controller. The OEM defines how those signals influence fan operation, damper position, filtration functions, warnings and environmental feedback.
STEP 01
Environmental Detection
Monitor selected CO₂, PM, VOC, HCHO, temperature or humidity parameters.
STEP 02
Controller Processing
Receive sensor data, perform signal processing and evaluate operating conditions.
STEP 03
Ventilation Response
Adjust fan speed or other equipment functions according to validated control logic.
STEP 04
Continuous Feedback
Updated measurements help the controller evaluate changing indoor conditions.
Ventilation safety:
Elevated outdoor particle levels should
not automatically trigger complete
fresh-air shutdown. Control design
should consider required ventilation,
filtration capability, indoor conditions
and applicable building requirements.
FRESH AIR EQUIPMENT APPLICATIONS
Sensor Solutions for ERV, HRV and Intelligent Ventilation Equipment
Different ventilation products require different environmental sensing combinations. Winsen sensor modules can be evaluated for residential air exchange equipment, heat recovery systems and smart ventilation products.
Residential Fresh Air Systems
CO₂, PM and optional VOC measurements can support environmental monitoring and intelligent ventilation functions in residential fresh-air equipment.
Energy Recovery Ventilators
CO₂ and temperature/humidity measurements can inform ventilation and environmental control in energy recovery ventilation products.
Heat Recovery Ventilators
Environmental sensors provide temperature, humidity and air-quality signals for HRV monitoring and control architectures.
Smart Ventilation Fans
Gas-related air-quality signals, temperature or humidity measurements can serve as inputs for automatic ventilation operation.
Fresh Air Purification Equipment
PM and gaseous air-quality sensing can be incorporated into filtered fresh-air products and integrated air treatment systems.
Integrated Ventilation Controllers
Multiple environmental measurements can be integrated into equipment controllers and user interfaces according to product requirements.
Temperature and humidity sensors
provide measurements that may be
useful in ERV/HRV systems.
They do not independently establish
heat recovery efficiency, ventilation
airflow or total energy performance.
SENSOR ARCHITECTURE
Dedicated Sensors or Multi-in-One Modules for Fresh Air Systems?
Ventilation equipment manufacturers can integrate separate environmental sensors or use compact multi-parameter modules. Selection depends on the monitored air streams, enclosure, electrical interfaces and required measurements.
Dedicated Sensor Architecture
Use individual CO₂, PM, VOC, HCHO and T&H modules where different parameters or sampling positions are required.
- Flexible sensing combinations
- Independent mechanical placement
- Parameter-specific sensor selection
- Suitable for customized equipment layouts
- Different output interfaces available
Typical combination:
MH-Z1911A + ZH10-F + ZS13A
Multi-in-One Architecture
Use an integrated IAQ module to combine several measurements in one sensing assembly.
- Fewer independent modules
- Compact integrated sensor options
- Potentially simpler host wiring
- Reduced mechanical integration work
- Suitable for multi-parameter monitoring products
Typical modules:
ZPHS01C / ZH10-VHT
WINSEN VENTILATION SENSOR PORTFOLIO
Recommended Winsen Sensors for Fresh Air and Ventilation Systems
Winsen provides CO₂, laser particle, semiconductor air-quality, formaldehyde and temperature/humidity sensing modules for equipment manufacturers and system integrators.
ZH10-F Laser Dust Sensor
Laser particulate matter sensor for ventilation systems, fresh-air equipment and environmental monitoring devices.
- Target PM1.0 / PM2.5 / PM10
- Range 0–1000 μg/m³
- Principle Laser scattering
- Output UART / PWM
ZP07 Air Quality Detection Module
Semiconductor sensing module providing graded gaseous pollution signals for ventilators, fresh-air systems and smart building equipment.
- Target Broad gaseous air quality response
- Signal 0–3 grade pollution signal
- Principle Semiconductor
- Output TTL level
ZPS20 Digital Air Quality Module
Integrated semiconductor VOC-related sensing and temperature/humidity monitoring for fresh-air equipment, ventilation fans and air treatment products.
- Target VOC, Temperature, Humidity
- Range VOC-related: 0–10 mg/m³
- Principle Semiconductor + T&H sensing
- Output I²C
ZE08K-CH2O Formaldehyde Module
Dedicated electrochemical formaldehyde detection module for ventilation equipment requiring HCHO monitoring.
- Target HCHO / Formaldehyde
- Range 0–5 ppm
- Principle Electrochemical
- Output UART / Analog / PWM
ZS13A Temperature & Humidity Sensor
Digital temperature and humidity sensor for ventilation equipment, indoor environmental controls and ERV/HRV monitoring applications.
- Target Temperature / Relative Humidity
- Temp. -40°C to 85°C measurement range
- Humidity 0–100% RH measurement range
- Output I²C
FEATURED MULTI-IN-ONE SENSOR
ZPHS01C Multi-in-One IAQ Module
ZPHS01C combines PM2.5, CO₂, temperature and humidity measurements with a selectable HCHO or VOC sensing version. It provides a compact option for ventilation equipment requiring multiple environmental parameters.
ZPHS01C version selection:
The HCHO and VOC functions are supplied
in different configurations. They are
not simultaneous measurements in
the same standard module version.
FRESH AIR SENSOR SELECTION
How to Select Sensors for Different Fresh Air System Designs
Start with the monitoring and control functions of the finished ventilation equipment. Then choose the appropriate sensor combination, communication interface and mechanical architecture.
| Equipment Type | Monitoring Requirement | Suggested Winsen Sensors | Engineering Focus |
|---|---|---|---|
| Basic CO₂ Fresh Air System | Indoor CO₂ monitoring for ventilation demand evaluation | MH-Z1911A | Verify measurement location, controller interface and operating conditions. |
| PM Monitoring Fresh Air Equipment | Particulate matter monitoring and filtration-related functions | ZH10-F | Evaluate air sampling, dust accumulation and humidity influence. |
| Air-Quality-Based Ventilation Fan | Graded gas pollution indication for automatic ventilation control | ZP07 | Suitable when broad pollution grading meets the product requirements. |
| VOC & Environment Monitoring | VOC-related changes, temperature and humidity | ZPS20 | Broad semiconductor response is not equivalent to selective gas analysis. |
| Formaldehyde Monitoring Fresh Air System | Dedicated HCHO concentration measurement | ZE08K-CH2O | Use a dedicated electrochemical HCHO module for specific formaldehyde monitoring. |
| ERV / HRV Environmental Monitoring | Temperature and relative humidity data | ZS13A | Environmental measurements do not independently determine recovery efficiency or airflow. |
| Integrated Smart Fresh Air System | PM2.5, CO₂, T&H and optional HCHO or VOC | ZPHS01C | Confirm module version, sampling representativeness, size and electrical interface. |
The listed combinations are
reference configurations for OEM
development. Final sensor choice
depends on the air streams being
monitored, device enclosure,
airflow, interfaces and
validation requirements.
OEM INTEGRATION
Fresh Air Sensor Integration for Ventilation Equipment Manufacturers
Smart ventilation products require reliable environmental measurement and compatible electronics. Winsen supports sensor selection and module integration discussions for fresh-air and ventilation OEM projects.
- Select CO₂, PM, VOC, HCHO and temperature/humidity sensing options.
- Match model-specific UART, PWM, TTL, analog or I²C outputs to the host controller.
- Evaluate sampling airflow and enclosure design.
- Consider condensation, contamination and environmental limits.
- Plan warm-up, signal handling, controller processing and diagnostics.
- Validate sensing performance in the finished ventilation equipment.
Representative Air Sampling
A sensor should measure the intended air stream or occupied environment. Indoor, intake and exhaust conditions may differ.
Moisture & Condensation
Fresh-air equipment may experience humidity variation and condensation. Sensor protection and operating conditions must be evaluated.
Electrical Integration
Confirm power supply, logic voltage, interface format and connector design for each selected module.
Airflow & Contamination
Consider sampling flow, particulate accumulation, filter position and maintenance requirements.
Data Processing
Account for startup, signal stabilization, compensation and response requirements in controller logic.
System Validation
Verify performance under representative ventilation modes, environmental conditions and equipment operating states.
MORE WINSEN IAQ SOLUTIONS
Explore More Indoor Air Quality Sensor Solutions
Winsen provides sensing modules for a wide range of indoor air-quality applications, including HVAC systems, smart air purifiers and integrated environmental monitoring equipment.
FREQUENTLY ASKED QUESTIONS
Fresh Air & Ventilation Sensor FAQs
Common questions about ventilation air-quality monitoring, ERV/HRV sensing, CO₂ control, PM2.5 detection and OEM integration.
Why do fresh air systems use CO₂ sensors?
CO₂ sensors provide concentration data that can help evaluate ventilation demand in occupied indoor spaces. The ventilation controller uses the data according to the OEM's control strategy.
Should a fresh air system measure indoor and outdoor PM2.5?
Indoor and outdoor particle measurements can provide different information. Whether both are needed depends on the monitoring and filtration objectives. Sensors intended for outdoor sampling require suitable environmental protection and validation.
What sensors are useful for ERV and HRV systems?
Depending on equipment functions, ERV/HRV systems may use temperature, humidity, CO₂ and additional air-quality sensors. The sensors provide environmental measurements, while airflow and energy recovery performance require appropriate system-level evaluation.
Can VOC sensors replace formaldehyde sensors?
A broad semiconductor VOC sensor does not directly replace a dedicated HCHO sensor when specific formaldehyde concentration measurement is required.
Can air quality sensors automatically control ventilation fans?
Yes. Sensor data can be processed by compatible equipment controllers to support automatic fan control. Thresholds, operating modes and protection logic are defined by the OEM.
Is 1000 ppm CO₂ a universal ventilation standard?
No. A single CO₂ concentration value is not a universal measure of ventilation compliance. CO₂ measurements should be interpreted according to occupancy, outdoor CO₂, building use and the applicable ventilation criteria.
Can ZPHS01C measure both HCHO and VOC simultaneously?
No. The standard ZPHS01C is offered in an HCHO version or a VOC version. Both functions are not provided simultaneously in the same standard configuration.
Does Winsen support OEM fresh-air sensor integration projects?
Winsen supports sensor selection, model-specific electrical interface discussions and application-level technical communication for ventilation equipment manufacturers.
Build Your Fresh Air Sensor Solution with Winsen
Tell us your ventilation equipment type, target sensing parameters, required interfaces and installation constraints. Our team can help evaluate suitable sensors for fresh-air, ERV/HRV and smart ventilation OEM projects.
