EN-440 Trace NO2 Gas AnalyzerDetailed product description：

Characteristics of EN-440 Trace NO2 Gas Analyzer:

The instrument adopts a new type of trace nitrogen dioxide detector
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 hydrogen 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
Optional output current of 0-10mA or 4-20mA

Main technical indicators:
Measurement range: 0~500ppm, 0~2000ppm, 0~5000ppm NO2 (choose one level)
Accuracy: 5% FS
Response time: T90 less than 40 seconds
Output signal: 0-10mA, 4-20mA
Power supply: 220VAC+/-10%, 50HZ+/-1HZ
Environmental temperature: 0-40 ℃
Sample gas flow rate: 200-400 milliliters per minute
Inlet temperature: 0-40 ℃
Alarm relay switch output: 265VAC/1A
Dimensions: 144 × 144 × 250mm
Hole size: 138 × 138mm
Instrument weight: 2.0kg