EN-640 Type SO2 AnalyzerDetailed product description：

Characteristics of EN-640 SO2 analyzer:

The instrument adopts a thermal conductivity gas sensor
Full Chinese operation menu
The instrument adopts a large screen LCD display screen
Real time clock display
Can be connected to a printer to achieve timed automatic printing
Equipped with timed automatic storage function and the ability to view stored data at any time
Equipped with a paperless recorder function, it automatically records the variation curve of sulfur dioxide concentration over time
Equipped with RS232 communication port, it can be connected to a computer to achieve real-time data transmission, data storage, curve trend chart, printing report and other functions
Can set upper and lower limit alarm points, with alarm contact output
Online calibration with available standard gas
The output current can be selected as 0-10mA or 4-20mA

Main technical parameters:
Measurement range: 0-15% (volume) SO2
Accuracy: Level 2.5
Response time: T90 ＜ 40 seconds
Output signal: 4-20mA DC (allows external load<600 Ω)
0-10mA DC (allows external load<4000 Ω)
Power supply: 220V ± 10% AC frequency 50Hz ± 5%
Environmental temperature: 0-40 ℃
Environmental humidity: 5-90% RH
Power consumption: 60W
Sample gas flow rate: 200 milliliters per minute
Inlet temperature: 0-40 ℃
Gas consumption: approximately 12L/h
Controller dimensions: 144 × 144 × 250mm
Controller opening size: 138 × 138mm
Gas analysis unit dimensions: 500 × 360 × 250mm