Lpg Gas Leak Detector 4-20ma Output

Characteristics:
4-20mA analog output(3+ channel) for direct communication to DCS system, RS485 ModBus output for central unit
Relay output for connecting external device
LCD display screen(LED display screen optional)
Sensor module(block) design on -spot replacement s and automatically distinguish sensor fault and current display fault simultaneously.
Password verification for repeat operation, avoid fault operations.
-40~+70A C following compensation for accurate detecting.
Second grade visual alarms on-site and Relay(connected with audible/visual alarms or drive exhaust device).
User-selectable alarm setpoint(s).
Note: QB2000N is with the digital display screen but QB2000T is without the digital display screen. The visual and audible alarm is optional.

Technical parameters:
1. Sensor type: catalytic combustion sensor
2. Range: 0-100%LEL
3. The low alarm suggest value: 10ppm. High alarm value suggested: 20ppm.
4. Resolution: 0.1ppm Accuracy:<= + 3% F.S
5. Response time:T90<30s.
6. Working current:a 50 Ma
7. Output signal: 4 to 20mA standard signal(RS485 output optional)
8. Power supply to the detector terminals: 16~30V DC.
9. Ambient Parameter: Temperature:- 20A C~+60A C Humidity: < 90%(without condensating)
10. Type of cable: 3 or 4 active wires screened between detector and centralized unit. 3A 1.5mm2 for 4-20mA signal OR 4*1.5mm2 for RS485 signal, external diameter >=10mm
11. Transmition Distance:<=1000meter
12. Mounting Screw thread: G1/2.
13. Weight: 1200g.