The instrument can collect four gas samples at the same time, and each channel is controlled independently;

Industrial electronic (semiconductor) constant temperature technology is adopted for four channel gas sampling, and double channel temperature measurement is adopted. The absorption bottle adopts full package automatic constant temperature mode;

The gas dynamic principle of micro hole constant current and the automatic constant current control combined with feedback steady flow are adopted;

A variety of sampling modes can be set flexibly, such as conventional mode, interval mode, constant product mode and scientific mode;

The sampling volume of standard condition can be calculated automatically. The sampling volume can be sampled at fixed time and interval respectively. It has the function of multiple sampling volume accumulation and can be used for state conversion;

Adopt low noise, high performance imported DC brushless gas pump;

The built-in large capacity memory can realize the permanent storage of at least 50 groups of sampling data;

Real time clock display, self recovery sampling after power failure, with the function of sampling compensation or no compensation after power failure;

Software calibration function with user password protection;

Power failure, call log record, with query, wireless print data function;

OLED wide temperature LCD Chinese character display ensures normal operation of the instrument under low illumination and low temperature;

Automatic measurement of atmospheric pressure and temperature, and automatic participation in gas state conversion;

The electronic flowmeter version can be selected for four channel gas sampling.