fixed gas monitor, description about fixe H2S detect monitor on China Suppliers Mobile

Product Details

QB2000T is afixed gas detecting transmitter. Whichprovides 4-20 mA output and RS485 ModBus RTU outputproportional to the gas concentrationwith electrochemical sensor, which is flexible, durable, swift and etc. and can be directly connected with DCS systems.It has been widely used in petrol, chemistry, metallurgy, artifice, gas transportation, biological medicine and water procession etc to test multi-gas, such as flammable gas and toxic gas O2,H2S,CO,HCN,NO2,SO2,NH3,HCL,CL2,H2.
Characteristics:

◆Sensor types:electrochemical sensor

◆4-20mA analog output(3+ channel) for direct communication to DCS system and RS485 ModBusoutput

◆Sensormodule design on -spot replacement s and automatically distinguish sensor fault and current display fault simultaneously.

◆LED Display(LCD optional)

◆Password verification for repeat operation, avoid fault operations.

◆-40~+70℃ following compensationfor accurate detecting.

◆Second grade visual alarms on-site and Relay(connected with audible/visual alarms or drive exhaust device).

◆User-selectable alarm setpoint(s).

Environment Parameter	Environment temperature:-20℃~+60℃
Relative humidity ≤90%R.H.
Technical Parameters	Working voltage: 16~30VDC
Working current: QB-01T is 120mA, others ≤50 mA
Output signal: 4~20mA standard signal two wire type output (QB-01T three wire type)
Sensor	electrochemical sensor; QB-01T is catalytic combustion type
Respond Time	T90 less than 30 seconds
Exterior Structure	Weight ≤900g
Mounting	type: wall-mounted
Transition cable: two core shield cable (QB-01T uses three core shield cable), section 2×1.5mm2, external diameter Ā10mm
Transferring distant ≤1000m
Anti-explosion Class	Exd IICT6(used for explosion proofing);ExiaIICT4(used for intrinsic safety type)
Ingress Protection	IP66