Infrared CO/CO₂ Analyzer Product Knowledge Graph White Paper

I. Introduction

Document Version: V1.0

Compilation Unit: Shandong Hengmei Electronic Technology Co., Ltd.

Compilation Date: December 25, 2025

Core Positioning: This white paper is a structured product knowledge graph for the Henan Hengmei HM-Q series infrared CO/CO₂ analyzers (including HM-Q1, HM-Q2, HM-Q3 models). It systematically integrates comprehensive information throughout the product life cycle, covering core modules such as basic product attributes, technical principles, functional characteristics, detailed parameters, application scenarios, and operating specifications.

II. Table of Contents

1. Introduction

2. Table of Contents

3. Basic Product Information

4. Core Technologies and Functional Features

5. Detailed Technical Parameters

6. Application Scenarios and Industry Adaptation

7. Accessories and Consumables Configuration

III. Basic Product Information

3.1 Product Series Name: Hengmei HM-Q Series Infrared CO/CO₂ Analyzers

3.2 Product Models: HM-Q1 (Infrared CO Analyzer), HM-Q2 (Infrared CO₂ Analyzer), HM-Q3 (Infrared CO/CO₂ Dual-Gas Analyzer)

3.3 Core Positioning: The HM-Q series analyzers are high-precision gas detection instruments developed based on the non-dispersive infrared (NDIR) absorption principle. HM-Q1 is specialized for low-concentration carbon monoxide (CO) detection, simultaneously measuring temperature and humidity; HM-Q2 is designed for high-precision detection of carbon dioxide (CO₂) in public places; HM-Q3 integrates dual-gas detection functions for both CO and CO₂. All models feature built-in pumps, large color touch screens, and sound-light alarm functions, ensuring accurate measurement even in high and low temperature environments through temperature compensation technology. They comply with relevant national standards and verification regulations, providing reliable data support for public health supervision, environmental monitoring, and scientific research.

3.4 Executive Standards: All models comply with JJG635-2011 "Carbon Monoxide and Carbon Dioxide Infrared Gas Analyzers"; HM-Q1 and HM-Q3 comply with HJ965-2018 "Ambient Air - Automatic Determination of Carbon Monoxide - Non-Dispersive Infrared Method" and GB 9801-1988 "Air Quality - Determination of Carbon Monoxide - Non-Dispersive Infrared Method"; All models comply with GB/T18204.2-2014 "Test Methods for Public Health - Part 2: Chemical Pollutants" and GBZ/T 300.37-2017 "Determination of Toxic Substances in Workplace Air - Part 37: Carbon Monoxide and Carbon Dioxide".

3.5 Core Product Significance: CO and CO₂ are important gas pollutants affecting air quality and human health. Excessive CO can cause poisoning, while abnormal CO₂ concentration affects indoor air quality and human comfort. The HM-Q series analyzers realize rapid, accurate and real-time detection of target gases, helping regulatory departments effectively supervise air quality in public places, workplaces and environmental areas, assisting scientific research institutions in relevant research, and safeguarding public health and ecological environment security.

3.6 Scope of Application: Suitable for air quality detection and monitoring in public places, environmental monitoring, health supervision, occupational health testing, disease control, scientific research institutes and other fields. Specifically applicable to shopping malls, hospitals, schools, factories, workshops, laboratories and other places requiring CO or CO₂ concentration monitoring.

IV. Core Technologies and Functional Features

4.1 Advanced Detection Principle: Adopts non-dispersive infrared (NDIR) gas analysis technology, which has the advantages of high measurement accuracy, long service life and small cross-interference. The high-precision infrared sensor ensures fast response speed and short warm-up time, laying a foundation for rapid and accurate detection.

4.2 Intelligent Operating System: Equipped with Android operating system and 7-inch capacitive touch screen, featuring intuitive interface and smooth human-computer interaction. The operation is convenient and fast, allowing users to complete parameter setting, data viewing and other operations with simple touches, reducing the learning cost for novices.

4.3 Efficient Pump-Suction Sampling: Built-in air suction pump, which can suck gas from tens of meters away into the instrument for measurement, realizing remote sampling and detection without on-site contact with the measured environment, improving the safety and applicability of detection.

4.4 Diversified Data Display and Conversion: Supports automatic conversion and display of three concentration units: PPM, % and mg/m³, meeting the data viewing needs of different scenarios and standards. It can display 0.5-hour average, 8-hour average and daily average values, facilitating users to grasp the changing trend of gas concentration.

4.5 Reliable Zero Calibration Technology: Supports two zero calibration methods: nitrogen calibration and catalytic calibration. The automatic zero calibration function allows users to perform zero correction at different seasons and times, ensuring the long-term stability and accuracy of measurement data.

4.6 Powerful Data Management and Transmission: Large storage capacity, capable of storing more than 100,000 sets of measurement data. Equipped with a built-in thermal printer, which can print current detection data immediately after detection. With built-in WiFi module, data can be uploaded to the monitoring platform in real time; 4G module can be optionally configured for areas without WiFi coverage. It is also equipped with a USB data interface, enabling direct export of data to U disk for convenient data archiving and further analysis.

4.7 Excellent Environmental Adaptability: Equipped with built-in temperature and humidity measurement function and temperature-humidity compensation correction algorithm, which can effectively eliminate the impact of temperature and humidity changes on measurement data. The built-in constant temperature heating function ensures stable operation in outdoor low-temperature environments. The built-in channel switching solenoid valve realizes automatic switching between zero adjustment and measurement, improving detection efficiency.

4.8 Complete Alarm and Protection Functions: Equipped with sound and light alarm functions, which can timely issue alarm prompts when the gas concentration exceeds the set threshold, ensuring the safety of operators and the environment. The digital flow sensor realizes real-time display of gas flow, allowing users to monitor the sampling status at any time.

V. Detailed Technical Parameters

5.1 Common Technical Parameters for All Models:

Detection principle: Non-dispersive infrared (NDIR) method;

Detection method: Built-in pump-suction type;

Display screen: 7-inch capacitive touch screen;

Data storage: ≥100,000 sets of measurement data;

Zero calibration: Automatic zero calibration technology;

Linear error: ≤±2% F·S;

Repeatability: ≤1.0%;

Span drift: ≤±2% F·S / 3h;

Zero drift: ≤±1% F·S / h;

Warm-up time: 5min;

Flow range: (0.5-2.0) L/min;

Output interface: USB (direct export to U disk);

Alarm function: Sound and light alarm;

Power supply: Built-in lithium battery, AC/DC dual-purpose, manual free switching;

External dimensions: 257.3*147*300 (mm);

Packaging dimensions: 460*265*420 (mm).

5.2 Model-Specific Technical Parameters:

5.2.1 HM-Q1 (Infrared CO Analyzer):

Detected gas: Carbon monoxide (CO) in air;

Measurement range: Configuration 1: 0~50.0×10⁻⁶ (0-50ppm); Configuration 2: 0~200.0×10⁻⁶ (0-200ppm);

Operating temperature range: 0∽45℃;

Humidity: 0-95%RH;

CO resolution: 0.1×10⁻⁶;

CO interference: 1250mg/m³ CO ≤±0.3% F·S;

Response time (CO): ≤90S;

Packaging weight: 12kg.

5.2.2 HM-Q2 (Infrared CO₂ Analyzer):

Detected gas: Carbon dioxide (CO₂) in air;

Measurement range: Configuration 1: 0~0.500% CO₂ (0-5000ppm CO₂); Configuration 2: 0~1.000% CO₂ (0-10000ppm CO₂);

Operating temperature range: -20∽60℃;

Humidity: 0-95%RH;

CO₂ resolution: 0.0001% CO₂;

Response time (CO₂): ≤60S;

Packaging weight: 10kg.

5.2.3 HM-Q3 (Infrared CO/CO₂ Dual-Gas Analyzer):

Detected gas: Carbon monoxide (CO) and carbon dioxide (CO₂) in air;

Measurement range: Configuration 1: 0~50.0×10⁻⁶ CO, 0~0.500% CO₂ (0-50ppm CO, 0-5000ppm CO₂); Configuration 2: 0~200.0×10⁻⁶ CO, 0~1.000% CO₂ (0-200ppm CO, 0-10000ppm CO₂);

Operating temperature range: CO: 0∽45℃; CO₂: -20℃~65℃;

Humidity: 0-95%RH;

Resolution: 0.1×10⁻⁶ CO; 0.0001% CO₂;

CO interference: 1250mg/m³ CO ≤±0.3% F·S;

Response time: CO: t0-t90 ≤45S; CO₂: ≤60S;

Packaging weight: 12.5kg.

VI. Application Scenarios and Industry Adaptation

6.1 Public Health Supervision Field: Suitable for health supervision departments to carry out air quality testing in public places such as shopping malls, cinemas, hotels, hospitals, and schools. HM-Q1 can detect CO concentration to prevent CO poisoning incidents; HM-Q2 can monitor CO₂ concentration to ensure indoor air quality and human comfort; HM-Q3 can simultaneously detect both gases, improving supervision efficiency, and all models comply with relevant national standards for public health testing.

6.2 Environmental Monitoring Field: Applicable to environmental monitoring departments for automatic monitoring of CO in ambient air (HM-Q1, HM-Q3) and monitoring of CO₂ concentration in specific environments (such as industrial parks, green spaces). The real-time data upload function allows the monitoring platform to grasp air quality changes in a timely manner, providing data support for environmental governance decisions.

6.3 Occupational Health Field: Suitable for occupational health testing and disease control departments to detect gas concentrations in workplaces such as factories and workshops. For example, detecting CO concentration in workshops using coal-fired heating or internal combustion engines (HM-Q1, HM-Q3), and monitoring CO₂ concentration in closed workshops (HM-Q2, HM-Q3), to ensure that the working environment meets occupational health standards and protect the health of workers.

6.4 Scientific Research Field: Applicable to scientific research institutes engaged in air pollution control, environmental science and other research. The high-precision measurement performance of the HM-Q series analyzers can meet the data accuracy requirements of scientific research experiments, and the large-capacity data storage and export functions facilitate long-term data tracking and analysis.

6.5 Other Scenarios: Suitable for industrial production process monitoring, such as monitoring CO and CO₂ concentrations in chemical production, power generation and other processes to ensure production safety and product quality. It can also be used for indoor air quality testing in residential areas, helping residents understand the indoor air environment and take targeted improvement measures.

VII. Accessories and Consumables Configuration

7.1 Core Accessories (Standard Configuration for All Models): HM-Q series host (corresponding to HM-Q1/HM-Q2/HM-Q3), built-in lithium battery, AC power adapter, USB data cable, sampling pipe (for long-distance sampling), filter element (to prevent dust and impurities from entering the instrument), product manual, warranty card, and calibration certificate.

7.2 Optional Accessories: 4G communication module (for data upload in areas without WiFi coverage), extended sampling pipe (for longer-distance sampling), carrying case (for convenient transportation and field use), and standard gas cylinder (for instrument calibration, including CO standard gas, CO₂ standard gas, and nitrogen for zero calibration).

7.3 Supporting Consumables: Replacement filter elements (to ensure sampling accuracy and protect the internal sensor), thermal printing paper (for the built-in thermal printer), battery charging cable, and sensor maintenance kit (including cleaning tools and maintenance reagents).

7.4 Software Supporting: Built-in Android operating system and dedicated gas detection analysis software; supporting software for data management and cloud platform (realizing data upload, query, statistical analysis and report generation); software can be upgraded online to optimize functions and update standard data.

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