On- Line LEL Gas Detector On- Line LEL gas detector product description: online type epoxy ethane gas detector, On- Line LEL gas concentration and gas for use in a variety of environments in real-time and accurate leak detection, imported electrochemical sensor and microcontroller technology. Fast response speed, high accuracy, stability and repeatability. The explosion-proof connection mode is suitable for all kinds of dangerous places, and is compatible with various control alarm PLC, DCS, and other control system, can realize the scene alarm and alarm in advance, 4-20mA/RS4 standard signal output, relay switch output display; perfect the technical index and gas concentration value; at the same time has a strong variety of circuit protection function, effectively prevent various man-made factors, lead to uncontrollable factors damage the instrument. On- Line LEL gas detector product characteristics: imported electrochemical sensor has good anti-interference performance, long service life of 3 years; Using advanced microprocessor technology, fast response speed, high accuracy, good stability and repeatability; This site has the detection function of acousto-optic alarm, gas concentration exceed the standard immediate alarm is a security risk field; This scene with backlight large screen LCD display, display gas concentration / type / unit / working condition etc.; Independent air chamber, sensor replacement is convenient, without replacing the field calibration, automatic identification of the key parameters of the sensor; the full range of digital temperature automatic tracking compensation, to ensure the accuracy of; This semiconductor nano technology of ultra low power 32 bit micro measure at;full automatic calibration software, sensors up to 6 level target calibration function, ensure accuracy and linear measurement, and has the function of data recovery;I have the overvoltage protection, lightning protection, short circuit protection, reverse polarity protection, anti electrostatic interference, anti magnetic interference and other functions;and has automatic recovery function, prevent the occurrence of external reasons, human factors, such as natural disasters caused damage to the instrument; All Chinese / English operation menu, simple and practical, with temperature compensation function; PPM,%VOL, mg/m3 three concentration units can freely switch; Anti automatic protection function of impact of high concentration of gas; Technical parameters: Product model HNAG1000-EX-L Product Texting Testing On- Line EX in air Sensor type Electro -chemical sensor Tested reagents 0-LEL Resolution 0.1%LEL Display mode LCD display Temperature Wet degree accessories, Temperature measuring range: -40 to 70 DEG C,Humidity detection range: 0-RH Detection accuracy diffusion, circulation, pump suction Optional installation wall hanging, pipe type Detection accuracy ≤±2% Linear error ≤±2% Response time ≤3s（T90） Zero drift ≤±2%（F.S/years） Signal output ① 4-20mA signal: 16 bit precision 4-20mA chip output standard, the transmission distance of 1Km ② The RS485 signal: using standard MODBUS RTU protocol, the transmission distance of 2Km ③ The voltage signal: 0-5V, 0-10V output, can be set.The: also known as the pulse signal frequency signal, the frequency range of adjustable（optional） ④ The switch signal: standard 2 optional relay, third relay, passive relay contact capacity, 220VAC 3A/24VDC 3A Transmission mode ① Cable transmission: 3 core, 4 core cable, long-distance transmission（1-2 km） ② The GPRS transmission: built-in GPRS module, real-time remote data transmission, not limited by the distance（optional） Receiving equipment User computer, Control alarm, PLC, DCS and so on Alarm mode On-site sound and light alarm, external alarm, remote controller alarm, computer data acquisition software, alarm and so on Alarm setting Standard configuration, two alarm, optional three alarm, alarm can be set up: routine alarm, alarm interval control Electrical interface 3/4 "NPT internal thread", "1/2" NPT internal thread, and supports 2 kinds of electrical connections Explosion proof mark ExdII CT6（flameproof） Shell material aluminum + sandblasting / fluorocarbon paint, corrosion and explosion proof Protection grade IP66 Temperature －30 ～ 60℃ Power supply 24VDC（12～30VDC） Humidity ≤95%RH，No condensation Size weight 183×143×107mm（L×W×H） 1.5Kg（instrument weight） working pressure 0 ～ 100Kpa Standard parts Manual, certificate, warranty period 2Years
