The product meets the technical requirements and testing methods of HJ/T 376-2007 24-hour constant temperature automatic continuous ambient air sampler; JJG956-2000 Calibration Regulations for Atmospheric Samplers. Implement enterprise standard Q/WTH 14-2014: TH-3000 series 24-hour constant temperature automatic continuous ambient air sampler.

　　Scope of application:
The TH-3000BVI portable continuous temperature atmospheric sampler is the latest portable on-site atmospheric sampler developed by our company. This sampler is designed in accordance with the latest standards of the Ministry of Environmental Protection, based on extensive expert advice and valuable user feedback, and combined with the characteristics of the TH-3000 series. The TH-3000BVI sampler is suitable for collecting various harmful gas components such as SO2 and NOX in the ambient air.

　　Instrument features:
The instrument can simultaneously collect four gas samples, with each channel independently controlled;
When sampling four gas channels, industrial grade electronic (semiconductor) constant temperature technology is used, dual channel temperature measurement is adopted, and the absorption bottle adopts a fully enclosed automatic constant temperature method;
Automatic constant current control using a combination of gas dynamics principles such as microporous constant current and feedback steady flow;
Multiple sampling modes can be flexibly set, including regular mode, interval mode, constant product mode, scientific mode, etc;
Automatically calculate the sampling volume of standard conditions, which can be sampled separately at regular intervals, with multiple sampling volume accumulation functions and can perform state conversion;
Adopting low-noise, high-performance imported DC brushless gas small pump;
Built in large capacity memory, capable of permanently storing at least 50 sets of sampling data;
Real time clock display, power failure self recovery sampling, with the function of selecting whether to supplement or not to supplement sampling after power failure;
Software calibration function with user password protection;
Power outage and incoming call log recording, with query and wireless printing data functions;
OLED wide temperature LCD Chinese character display screen ensures normal operation of the instrument under low light and low temperature conditions;
Automatic measurement of on-site atmospheric pressure and temperature, and automatic participation in gas state conversion;
The electronic flowmeter version can be used for four-way gas sampling.