GNL-500 series carbon dioxide analyzer analyzer using imported high-performance infrared sensor for the measurement unit is a microprocessor-core intelligent analyzer with a programmable current (4-20mA.DC) outputs, two programmable alarm signal (ALARM) output, a one-way data communication RS232 or RS485 interface (user's choice), 0 ~ 50.0% in a mixed gas containing carbon dioxide for accurate measurement of carbon dioxide concentration. In addition to CO2, the other CO, CH4, etc. can also be detected by infrared principle, when ordering. Features ◆ imported infrared sensor, long life, high precision, fast response time; ◆ Chinese man-machine dialogue menus, easy and intuitive; ◆ regular automatic storage function, you can always view historical data; ◆ using large dot matrix LCD, concentration of carbon dioxide can be displayed simultaneously, date, time and other parameters; ◆ alarm point can be set within the range of full scale; ◆ Analog output upper and lower limits can be set to any full-scale range; ◆ standard RS-232 or RS485 communication interface, you can connect serial printer or computer to achieve one-way communication.