B-Type Dual-Channel Constant-Temperature Constant-Flow Air Sampler

Product Overview

The B-Type Dual-Channel Constant-Temperature Constant-Flow Air Sampler is designed for the collection of gaseous and vapor-phase air pollutants such as SO₂ and NOₓ in both ambient and indoor environments. The device complies with the standards JJG 956-2013: Calibration Procedures for Air Samplers and HJ/T 375-2007: Technical Requirements and Testing Methods for Environmental Air Samplers. It offers stable performance and user-friendly operation, suitable for routine monitoring and emergency sampling. The sampler employs solution absorption to preserve the integrity and accuracy of collected gas components, making it ideal for environmental monitoring, occupational hygiene, labor protection, safety supervision, military, research, and educational applications.

Working Principle

The sampler uses a dual independent channel system to direct air pollutants into solution absorption vessels for collection. Electronic flow meters and high-performance diaphragm pumps maintain constant-flow sampling, while an automatic temperature control system keeps the absorption solution and sampling tubes at a stable temperature. Built-in particulate filters prevent contamination of the gas path, and a backflow-prevention dryer avoids solution reflux. The system automatically calculates cumulative sample volume, converts it to standard conditions, and provides real-time monitoring of air pressure, temperature, and flow deviations for accurate compensation.

Key Features

• Dual-Channel Sampling: Collects two gases or parallel samples simultaneously, with independent control for each channel. Flexible sampling options for diverse monitoring needs.
• Precise Flow Control: Electronic flow meters automatically adjust flow and compensate for voltage, resistance, and temperature variations.
• High-Performance Diaphragm Pump: Corrosion-resistant, low-noise, long-lasting, with overload protection.
• Backflow-Prevention Dryer: Prevents absorption solution backflow, ensuring operational safety.
• Particulate Filtration: High-quality dust filter protects gas pathways and pumps.
• Automatic Temperature Control: Maintains stable sampling temperature and quickly reaches the target constant temperature.
• LCD Display: Chinese dot-matrix screen with automatic contrast adjustment for intuitive and clear operation, suitable for low-temperature environments.
• Real-Time Monitoring and Data Calculation: Monitors pressure, temperature, and compensates flow deviations, automatically calculates cumulative sample volume and standard volume.
• Power Failure Protection: Sampling data automatically saved during power interruptions and resumes upon restoration.
• Data Storage and Printing: Supports storage and printout of sampling data for analysis and record-keeping.

Applications

• Environmental Monitoring: Routine and emergency monitoring of ambient air pollutants (SO₂, NOₓ, etc.).
• Indoor Air Quality Assessment: Measures hazardous gases indoors to comply with indoor environment standards.
• Research and Education: Supports environmental research and teaching experiments in academic institutions.
• Occupational Safety and Supervision: Monitors workplace air pollutants, ensuring health and safety.
• Military and Security: Air quality monitoring in military and security areas to ensure operational safety.