Enterprise standard Q/WTH 38-2021: THM-700 Series Air Quality Flowmeter.
Instrument Principle
The THM-700 series flowmeter is specially designed for flow detection of air automatic station instruments, using the principle of "precise split-flow technology + mass flowmeter (air)". The THM-703 flowmeter is mainly used for PM₁₀ and PM₂.₅ particulate monitoring instruments and samplers with 16.7L/min sampling, with the flowmeter interface made according to the internationally common Φ32.7mm (1.25 inches). During measurement, simply remove the cutter using 16.7 L/min flow for PM₁₀ or PM₂.₅ and insert the flowmeter, which is quick and convenient. The instrument has the function of remotely transmitting flow test data to a PC for continuous measurement, recording 4 items of data every five minutes. The THM-702 flowmeter is mainly used for flow testing of SO₂, NO₂, CO, O₃ and other monitoring instruments. The THM-701 flowmeter is used in conjunction with THM-703, mainly for testing two mass flowmeters of dynamic calibrators. The THM-704 flowmeter is mainly used for flow detection in large flow ranges.
Instrument Features
•Uses EPA standard cutter connection size, plug-and-play flow measurement;
•Uses precise split-flow technology, low resistance to measured flow when connected to the flowmeter;
•Touch interface, concise and practical, convenient operation;
•Can directly read instantaneous flow or average flow over a specified time period;
•Can select standard condition or actual condition flow (0℃ 20℃ 25℃) as needed;
•Built-in wireless module, can remotely set and record flowmeter parameters;
•Automatic temperature and pressure compensation, automatic screen brightness adjustment;
•Built-in lithium battery (with charger), can work continuously for 12 hours.
