Advanced Sensors Application Technology Co., Ltd.  

Product Name: Electrochemical Formaldehyde CH2O Gas Detector Methanal Incineration Toxic Gas Monitoring Model NO.: CH2O/M(C)(S)-range Customized: Customized Certification: RoHS Sensitivity: High IP Rating: IP20 Material: PC Production Process: Integration Output Signal Type: Analog Type Conductivity Type: Volume Control Type Type: Electrochemical Gas Sensor Output: TTL/4-20mA/RS485 Transmitter Board: Integrated/Seperated Wire: Two or Three Wire Detecting Range: Selectable After Sale Service: Yes Trademark: FAD Transport Package: Transparent Plastic Box Specification: 20-41mm Origin: China HS Code: 8542330000 Product Description Gas Module IntroductionFAD gas module with two/three wire TTL/0-20mA/RS485 output, integrates toxic gas sensor + transmitter board. Adopting imported advanced electrochemical gas sensors, it has features of high accuracy, long lifetime, high stability and high anti-interference. The module is designed to prevent circuit reversed connection, high voltage, high current and lightningGas Module Feature- Long lifetime imported advanced electrochemical sensors- High accuracy op ams, power supply IC, stable and sensitive - Detect low or high concentration toxic gases precisely- High anti-interference ability- Over range protection, reversed polarity protection and lightning protection- Low power consumption with a standard 4-20mA two/three-wire signal output- Interface: pump, diffusing, flange, flange thread types- 12-36VDC operating voltage Sensor Detecting Range SelectionDetecting range (ppm)/SizeMiniatureCompactSlimStandard0-10CH2O/M-10CH2O/M-10-2ECH2O/C-10CH2O/C-100-50CH2O/M-500-1000CH2O/M-1000CH2O/C-1000Sensor Performance Characteristics(take CH2O/C-10 as an example)Operation Principle 3-Electrode Electrochemical Nominal Range0 - 10 ppmMaximum Overload50 ppmExpected Operation Life3 years in air Output Signal with4600 ± 1200 nA/ppmResolution<0.01 ppmTemperature Range- 40 °C to 50 °CPressure RangeAtmospheric ±10%Pressure CoefficientNo dataT60 Response Time with< 40 secRelative Humidity Range15 % to 90 % R.H. non-condensingTypical baseline Range (pure air, 20°C)-0.1 ppm to 0.02 ppmMaximum Zero Shift (+20°C to +40°C)NDLong Term Output Drift< 2% per monthRecommended Load Resistor10 OhmBias VoltageNot allowedRepeatability< 2% of signalOutput LinearityLinearHumidity Effect 2)Abrupt changes in humidity Performance data conditions: 20 °C, 50% RH, 1013 mbar Module ParametersModule typeGM-I2(3)-M/C/S-**-****/G/P/F/FLDetected gasToxic gas Detecting principleElectrochemistrySamplingDiffusing pump flange threadResponding time30s~40s(of the sensor)Module accuracy≤±3%FS(actual concentration, higher accuracy depends on specified sensors)Module repeatability≤±2% FSModule linear error≤±2% FSModule zero temperature drift≤±2% (FS/year)Module operating temperature-40~80°CModule humidity0-95%RH(non-condensation)Sensor operating temperature-20°C~50°CSensor humidity0-90%RH(non-condensation)Signal outputTTL/4-20mA /RS485 (two or three wire)Transmitting distance1000 meters(RS485)Operating voltageDC 12-36VMaximum power≤0.8WSize80*48mmExplosion proofIntrinsic safeConnection cableRVVP3 x 1.5mm²Module applicationsPetroleum, petrochemical, metallurgy, chemical, electricity, telecom, gas, mining, pharmacy, municipal wastewater treatment, indoor environment, atmospheric environmental protection, transit equipment, transportation facilities, tunnel safety and underground parking, leak detection, safety and environmental control