Negative Oxygen Ion Detector: Precision and Portability Combined

In today's world where air quality is increasingly emphasized, negative oxygen ions, known as "air vitamins," have become an important indicator for evaluating environmental quality. The multi-functional environmental negative oxygen ion detector integrates the detection of negative oxygen ions, formaldehyde, PM2.5/PM10, and temperature and humidity. Utilizing advanced technologies such as the cylindrical capacitive inhalation method, it achieves comprehensive and high-precision monitoring of air quality.

Core Technical Principles and Instrument Features

1. Cylindrical Capacitive Inhalation Method Principle

The multi-functional environmental negative oxygen ion detector employs the capacitive inhalation method for negative ion detection. Its core technology includes:

Polarized Electric Field: A quantitative voltage (typically 12V) is applied to the polarization plate of the ion sensor.

Ion Capture: When air passes through the sensor at a constant flow rate (0.6 m/s), small-sized negative ions are deflected under the electric field.

Charge Measurement: The charge quantity of captured ions is measured via a precision circuit.

Concentration Calculation: Negative ion concentration (adjustable from 0 to 10 million/cm³) is calculated based on the relationship between charge quantity and flow rate.

Compared to traditional parallel plate detectors, the cylindrical structure offers higher capture efficiency and stronger anti-interference capabilities.

2. Multi-Parameter Integrated Detection

The instrument achieves synchronous monitoring of multiple parameters through modular design:

Formaldehyde Detection: Electrochemical sensor (0-5 ppm, accuracy ±5%).

Particle Matter Detection: Laser scattering principle (PM2.5/PM10, 0.3-10 μm).

Temperature and Humidity Sensor: Digital sensor (temperature ±0.5°C, humidity ±3% RH).

Technical Advantages

1. High Precision and Stability

Anti-Interference Design: Metal casing and electromagnetic shielding technology effectively resist static electricity and electromagnetic wave interference, particularly highly sensitive to small-sized negative ions (<1 nm).

Dynamic Calibration: Built-in automatic zero-point calibration ensures measurement stability over long-term use.

2. Portability and Ease of Use

Lightweight Design: Dimensions of 200 mm × 132 mm × 58 mm, weighing 1 kg, with a metal casing that balances durability and heat dissipation.

5-Inch Full-Color Screen: Touchscreen with 800 × 480 resolution displays real-time multi-parameter data, allowing even novice users to operate it within 3 minutes.

3. Battery Life and Expandability

Extended Standby: Built-in 12V 3000 mAh lithium battery supports continuous operation for ≥8 hours, free from power constraints.

Data Interface: USB communication interface supports data export and is compatible with third-party analysis software.

Application Fields and Solutions

1. Environmental Monitoring and Ecological Research

Scenario: Monitoring negative oxygen ion concentrations in natural areas such as forest parks and wetlands.

Solution: Long-term fixed-point monitoring generates dynamic concentration curves, providing data support for eco-tourism ratings and air quality reports.

2. Indoor Air Treatment and Building Material Testing

Scenario: Verification of formaldehyde exceedance after home renovation and effectiveness of negative ion building materials.

Solution: Synchronous detection of formaldehyde and negative oxygen ions accurately assesses air treatment effectiveness.

3. Medical and Health Industries

Scenario: Air quality optimization in hospital wards and elderly care institutions.

Solution: Monitoring negative oxygen ion and PM2.5 concentrations, combined with temperature and humidity data, to create a healthy air environment.

Industry Challenges and Device Breakthroughs

1. Limitations of Traditional Equipment

Single-Parameter Detection: Unable to meet the needs of multi-indicator联动 analysis.

Low Precision: Small-sized negative ions are easily missed, reducing data reliability.

Complex Operation: High professional training costs limit widespread application.

2. Innovative Value of This Device

Comprehensive Monitoring: Covers five core indicators in a single detection, enabling more scientific data correlation analysis.

High Sensitivity: Achieves a 95% capture rate for negative ions with sizes <1 nm, far exceeding industry standards.

User-Friendly Operation: Intuitive touchscreen interface allows complex tasks to be completed without professional background.

The multi-functional environmental negative oxygen ion detector is not just a testing device but a bridge connecting environmental data and health decisions. By scientifically quantifying invisible environmental factors, it provides a scientific tool for ecological protection, health industries, and public management.

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