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QB2000N is a fixed gas ***ecting transmitter, with 4-20 mA or RS485 ModBus RTU output proportional to the gas leakage concentration with original imported catalytic combustion sensor. It monitors gas 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 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:
¡ô4-20mA analog output(3+ channel) for direct communication to DCS system
¡ôRelay output for connecting external device
¡ôLCD display screen(LED display screen optional)
¡ôSensor module(block) design on -spot replacement s and automatically distinguish sensor fault and current display fault simultaneously.
¡ôPassword verification for repeat operation, avoid fault operations.
¡ô -40¡«+70℃ following compensation for accurate ***ecting.
¡ô Second grade visual alarms on-site and Relay(connected with audible/visual alarms or drive exhaust device).
¡ôUser-selectable alarm setpoint(s).
Technical parameters:
1. Sensor type: catalytic combustion sensor.
2. Range: 0-100%LEL
3. Resolution: 1% LEL
4. Accuracy:<= + 3% F.S
5. Response time:T90<30s.
6. Working current:¡Ü50 Ma
7. Output signal: 4 to 20mA standard signal(RS485 output optional)
8. Power supply to the ***ector terminals: 16¡«30V DC.
9. Ambient Parameter: Temperature:£20℃~+60℃ Humidity: < 90%(without condensating)
10. Type of cable: 3 or 4 active wires screened between ***ector and centralized unit. 3¡Á1.5mm2 for 4-20mA signal OR 4*1.5mm2 for RS485 signal, external diameter ¡é>=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.
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| Company: |
Henan Chicheng Electronics Co.,Ltd
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| Contact: |
Ms. doris Lee |
| Address: |
Block 2, NO.11 Changchun Road, High-tech Developing District, |
| Postcode: |
450001 |
| Tel: |
86-371-80621122 |
| Fax: |
86-371-80632929 |
| E-mail: |
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