EN-308 Dual Range Infrared Gas AnalyzerDetailed product description：

The EN-308 dual range infrared gas analyzer is based on the principle of non dispersive infrared absorption spectroscopy (NDIR), and its measurement method is based on the principle of selective absorption of infrared by gas. When the measured gas passes through the measurement pipeline, it absorbs specific frequency light emitted by the infrared light source (related to the composition of the measured gas) to attenuate the light intensity. The degree of attenuation of the measured light intensity determines the concentration of the measured gas. The infrared gas analyzer made using the principle of infrared radiation absorption by gas molecules has the characteristics of high measurement accuracy, fast speed, and continuous measurement. In industrial sectors such as steel, petrochemicals, fertilizers, and machinery, infrared gas analyzers are an important monitoring tool for production process control; There are also many successful applications in environmental pollution component detection and medical physiology research The EN-308 infrared gas analyzer adopts internationally advanced microphone detection technology and microprocessor technology, with functions such as digital information processing, human-machine dialogue, automatic operation prompts, large screen LCD display, upper and lower limit alarms, and standard signal output. It can continuously analyze the concentrations of gases such as CO, CO2, CH4, NH3, SO2 in various mixed gases, and is widely used for online gas analysis in industrial production processes such as petrochemicals, fertilizers, air separation, metallurgy, building materials, and power plants. It can also be used in fields such as environmental monitoring, health and epidemic prevention, agriculture, and scientific research

Characteristics of EN-308 Dual Range Infrared Gas Analyzer:

Thin film micro sound detector with high sensitivity, long lifespan, and high reliability;
The detector adopts a front and rear chamber structure, greatly improving the selectivity of the instrument and minimizing cross interference;
Adopting amplitude modulation technology, with strong common mode rejection capability, small zero drift of the instrument, and good stability;
Fully sealed optical path, unaffected by environmental atmosphere;
Encapsulated infrared light source with extremely high stability;
Gold plated (or stainless steel) measuring chamber with strong corrosion resistance;
Large screen LCD display with full Chinese operation menu;
Human computer dialogue, automatic prompt operation steps, automatic detection of light source voltage, background reference voltage and other working parameters;
Dual range automatic conversion, full range digital linear processing;
Equipped with two sets of alarm contact outputs, the upper and lower limit alarm points can be set arbitrarily within the full range;
Equipped with timed automatic storage function, the stored data can be viewed at any time;
Equipped with a paperless recorder function, it automatically records the variation curve of the measured gas concentration over time;
Equipped with fully isolated 0-10mA or 4-20mA standard signal output;
Equipped with an RS-232 communication port, it can connect to a serial printer or achieve bidirectional communication with a computer;
Optional addition of oxygen measurement module: measurement range 0-25% O2, resolution 0.01%; O2。

Main technical specifications of EN-308 dual range infrared gas analyzer:
Measurement object:

	Optional measurement components	Optional range
Component 1	CO、COtwo、 CHfour、 SOtwo、 NO	Trace (ppm), constant (%)
Component 2	CO、COtwo、 CHfour、 SOtwo、 NO	Trace (ppm), constant (%)
Component 3	Otwo(Principle of Electrochemical Detection)	0-5%, 0-10%, 0-25%

Measurement range: 0~100% (volume percentage) full range (according to user needs)
Minimum measurement range: CO: 0~20ppm, CO: 2: 0~20ppm, CH: 4: 0~100ppm, SO: 2: 0~500ppm, NO: 0~500ppm
Zero drift: ≤± 1% FS/7d
Range drift: ≤± 1% FS/7d
Linear error: ≤± 1% FS
Repeatability: ≤ 0.5%
Output fluctuation: ≤± 0.5% FS
Response time: T90 ＜ 10 seconds
Preheating time: ＜ 1h
Power supply: 220VAC ± 10% 50Hz ± 1%
Power consumption: ≤ 120VA
Environmental temperature: 5~45 ℃
Environmental humidity: 5-90% RH
Sample gas pressure: 2-20Kpa
Sample gas flow rate: 200~1000ml/min
Sample gas pipeline joint: φ 6 × φ 4
Output signal: 0~10mA (allows external load of 1600 Ω), 4~20mA (allows external load of 800 Ω)
Alarm relay contact capacity: 220VAC/1A, RS-232 communication port
Dimensions: 19 "rack mounted height 3U, 483 × 133 × 250mm (width × height × depth)
Hole size: 443 × 133mm
Instrument weight: approximately 10kg