The product complies with GB18483-2001 Emission Standard of Cooking Fume; Enterprise standard Q/WTH 12Y-2023 Q/WTH-7000 Online Cooking Fume Monitor for Catering Industry.
Application Scope
This equipment uses a laser scattering sensor to measure the concentration of cooking fume particles and cooking fume in the flue, and an electrochemical sensor to measure the concentration of non-methane total hydrocarbons.
During actual operation, the built-in constant flow pump draws the exhaust gas from the duct into the unit. When the sample gas containing particles passes through the laser scattering sensor, it is irradiated by the internal laser beam to produce scattered light, which is converted into an electrical signal through the circuit. The high-precision signal acquisition chip collects the signal and calculates the real-time concentration data of cooking fume particles. Through the massive data accumulated from years of comparative tests by our company, a model database between different cuisines, cooking fume particles, and cooking fume concentration is established, and the cooking fume emission concentration is calculated through the data model. When the gas passes through the specially designed gas chamber, it is detected by the electrochemical sensor and outputs a linear current signal. The real-time non-methane total hydrocarbon concentration is obtained through circuit conversion, measurement, and calibration.
Instrument Features
•Easy Operation: Uses color touch LCD screen, full Chinese menu for human-machine interaction, simple operation with strong logic;
•Complete Functions: Can measure cooking fume concentration, cooking fume particle concentration, non-methane total hydrocarbon concentration, fan input current, purifier input current, various flue working condition parameters, various high-voltage parameters of the purifier, various environmental parameters, and cleanliness indicators;
•Integrated Structure for Easy Installation: The whole unit integrates three major functions: cooking fume parameter measurement, flue working condition parameter measurement, and purifier working condition parameter measurement, achieving integrated design;
•Long Service Life: Uses long-life laser scattering sensor and electrochemical sensor, with modular design for easy replacement, increasing service life;
•Explosion-Proof Enclosure: Uses high-quality explosion-proof chassis to ensure safe use;
•Chassis Constant Temperature: Special temperature control design inside the chassis keeps internal temperature controlled, with heating system when temperature is too low and cooling system when temperature is too high;
•Reliable Data Transmission: Uses high-gain DTU module, enabling efficient data transmission even in weak signal locations such as basements, with easy card replacement and recharge without disassembly;
•Large Storage Capacity: The system can store up to 45,000 sets of data for historical query;
•Rich Interfaces: Can connect to Ethernet, GPRS, RS232, RS485 and other interfaces;
•Strong Expandability: The host reserves abundant ADC, DAC, and IO interfaces for user-customized additional functions;
•Automatic Alarm Display: Alarm when cooking fume emission exceeds the standard;
•Air Volume Measurement: Uses our company's self-made S-type pitot tube, calibrated through our self-developed wind tunnel. Can measure real-time flue velocity, smoke temperature, air volume, and other working condition parameters, converting measured concentration to emission concentration at baseline air volume, in compliance with national standards;
•High-Precision Measurement of Fan and Purifier Current: Safer and more convenient measurement of fan and purifier input supply current through mutual inductor, with high-precision measurement results obtained through linear fitting with actual measured data;
•Purifier High-Voltage Parameter Measurement: Monitors purifier high-voltage, current, power, and other parameters;
•Cleanliness Measurement: Can determine purifier cleaning time through cleanliness;
•Information Input: Features user information input function and time calibration function.
