On- Line LEL Gas Detector
On- Line LEL gas detector product descrtption:
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 0-100%LEL
Resolution 0.1%LEL
Display mode LCD display
Temperature
Wet degree accessories, Temperature measuring range: -40 to 70 DEG C,Humidity
detection range: 0-100%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 RS4 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
