4-20ma Fixed Chlorine Toxic Gas Leakage Detector With Alarm Light

Technical parameters:
1. Sensor type: original imported electro-chemical sensor for CL2
2. Range: 0-20ppm
3. The low alarm suggest value: 2pm. High alarm value suggested: 5ppm.
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: 16i 30V DC.
9. Ambient Parameter: Temperature:- 20a ~+60a 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 i? >=10mm
11. Transmition Distance:<=1000meter
12. Mounting Screw thread: G1/2.
13. Weight: 1200g.
14. Anti-explosion Class: Ex d IICT6Gb
15. Protection Class:IP66.
Note: audible-visual alarm is optional.

Characteristics:
a 4-20mA analog output for direct communication to DCS system, RS485 ModBus output for
central unit
a Relay output for connecting external device
a LCD display screen(LED display screen optional)
a Sensor module(block) design on -spot replacement s and automatically distinguish sensor fault
and current display fault simultaneously.
a Password verification for repeat operation, avoid fault operations.
a -40i +70a following compensation for accurate detecting.
a Second grade visual alarms on-site and Relay(connected with audible/visual alarms or drive
exhaust device).
a User-selectable alarm setpoint(s).
Note: QB2000N is with the digital dis