online combustible gas detector KB-501

Gas detector KB-501 is a new type combustible gas detector which used high performance catalytic combustion gas sensor and sophisticated SMD technology. It has following advantages: good repeatability,high resistance to humidity-temperature jamming, long performance life and simple operation. It is applied to inspection for gas concentration in industrial environments.KB-501 can translate the combustible gas concentration signals into electric current signals or digital signals for outputting and transmitting. It adopted three-wire (4 20mA signals output) and four-wire (RS485 bus output) system, remotely examine the detection result through the monitor or controller. Common applications is gas safety inspection and alert for industrial scene, such as petroleum refinery, chemical plants, LPG stations, boiler rooms, gas stations, paint spray booths, etc.Features• Advanced catalytic combustion sensor;• Intrinsically safety circuit design;• Three-wire system 4 20mA standard signals output and long distance transmission;• RS485 bus output (optional);• Possible to connect to DCS system directly;• The probe has following advantages: high sensitivity, quick-response capacity, long performance life and short polarization time.Technical SpecificationsApplicable Gas Flammable gas Detecting Range 0 100%LEL Alarm Threshold (two-stage) Low: 25%LEL / High: 50%LEL Working Current ≤170mA Working Voltage 16 30V DC Power Consumption <2.2W Output Signal three-wire system 4 20mA standard signals output; RS485 bus output (optional) Installation Means Wall mounted Transmission Distance ≤1000m Explosion-proof Type Explosion insulating Explosion-proof Index Ex d IIC T6 Protection Grade IP65 Applicable GasCH4 C3H8 C6H14 petrol C2H6O CH4O C3H6 C7H16 diesel CH2Cl2 C7H8 C3H6O C8H18 C10-H16 C4H8O2 C2H6 C4H10 C6H6 C4H10 C6H12O2 C2H4 C4H8O C8H10 C3H8O C2H4O C2H2 C4H6 C8H12 C2H5Cl C3H6O C2H6O C5H12 H2 CH4 LPG