QB2000N Adopt imported gas sensor, alarm and timely gas detector alarm, industrial special stationary CL2 gas leak alarm

QB2000N/T—Fixed Cl2 Gas Module (Block) Monitor Transmitter for CL2

QB2000N/T is a fixed Chlorine detecting transmitter, with 4-20 mA or RS485 ModBus RTU outputproportional to the Chlorineleakage concentration with original imported electro-chemical sensor. It monitors Chlorien leakage by natural diffusion. It is flexible, durable, accuracy, stable and etc. and it can be directly connected with DCS systems or Central unit. With relay output, once the Chlorine concentration exceed the preset alarm point(threshold) it will start the acoustic-optical alarm on the central unit and drive the external equipment like exhaust fans.It has been widely used in petrol, chemistry, metallurgy, artifice, gas transportation, biological medicine and water procession etc.

Characteristics:

4-20mA analog output 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~+70°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: 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:≤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:- 20°C~+60°C Humidity: < 90%(without condensating)

10. Type of cable: 3 or 4 active wires screened between detector and centralized unit. 3×1.5mm2 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.

14. Anti-explosion Class: Ex d IICT6Gb

15. Protection Class:IP66.