Model Number: HFD #4-3 Brand Name: HuaFanQinLu Key Specifications/Special Features: Descriptions:Digital tube and liquid crystal display gas detection transmitter, it is a kind of concentration of instrument that can continuous detect the concentration of oxygen, toxic and harmful gas in the working environment. The detector detects gas concentration with natural diffusion mode, which uses the imported sensors and has a good sensitivity and repeatabilityFeatures:Explosion-proof marks: Exd II CT6Output signal: 4-20mAOutput: three-wire system485 digital signal is four-wire system (power+, power-, signal+, signal- optional)Three-wire system adopts three core shielded cable 3 x 1.5mm2 (digital tube transmitter)Two wire adopts two core shielded cable 2 x 1.5mm2 (LCD transmitter)Specifications:
Size: 144 * 190 * 91mm
Weight: about 1355g
Sensor types: electro chemistry method (combustible gas catalytic combustion type, special separately)
Destination gas: oxygen (O2), gas (EX), poisonous and harmful gases (CO, H2S, NH3, CL2)
Response time: ≤30s(O2), ≤40s(CO), ≤20s(EX)
Working pattern: continuous work
Working voltage: 24V DC
Output signal: 4-20mA, 485 digital signal
Output: three-wire system (LCD poison gas is a two wire)
Control signal: switch output, the maximum load 250V AC, 3A (optional)
Repeatability: <2%
Span drift: <5%
Error: value for relative error less than 5%
Temperature range: - 20 to 50°C
Humidity:15-90% RH (no condensation)
Connection mode: according to the instruction
Transmission cables:
Three-wire system adopts three core shielded cable 3 x 1.5mm² (digital tube transmitter)
Two wire adopts two core shielded cable 2 x 1.5 mm² (LCD transmitter)
Packing weight: 1.55kg

Packing included: display gas detection transmitter