QB2000N 4-20mA fixed Industrial LPG gas detector with relays

QB2000N/T is Industrial LPG gas detector, with 4-20 mA or RS485 ModBus RTU output proportional to the gas leakage concentration with original imported electro-chemical sensor. The online gas detector transmiteer 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.

•  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~+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.

• Sensor type: original imported electro-chemical sensor for toxic gas, and catalytic combustion sensor for combustible gas.
•  Range: refer to the below reference chart
•  Resolution:1%LEL, 1%VOL, 1ppm or 0.1ppm
• Accuracy:<= + 3% F.S
• Response time:T90<30s.
• Working current:≤50 Ma
• Output signal: 4 to 20mA standard signal(RS485 output optional)
•  Power supply to the detector terminals: 16~30V DC.
•  Ambient Parameter: Temperature:-20°C~+60°C.  Humidity: < 90%(without condensating)
• 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
• Transmition Distance:<=1000meter
• Mounting Screw thread: G1/2.
• Weight:1200g.
• Anti-explosion Class: Ex d IICT6Gb
•  Protection Class:IP66.

The above picture show how to connect the detector with other external device.

Thanks for visit our website and sincerely hope to cooperate with you!. We are grateful for the pleasure to serve you and meet your gas detection needs or inquiry.

Henan Chicheng Electric Co., Ltd is a ISO9001-2000 certified high-tech import and export  company and also  the government permitted gas detecting device manufacture with Measurement of production License(MC),  The explosion-proof certificate(EX)  and Fire type certificate(CNAS)approved,  we are in in the research  and marketing a range  of portable and fixed gas detection products,  industrial process automation control,  safety protection and analytical instrument and we are in Zhengzhou Henan China.

Our service:

1. Any inquiries will be replied within 24 hours.

2. Professional manufacturer. Welcome to visit our website.

3. OEM/ODM available

1) Customer brand(law allowance) can be made on the sticker.

2) Customized gas detection tools are welcomed

3) Customized color box.

4) Any your idea gas detection tool we can help you to design and put it into production.

4. High quality, fashion design, reasonable & competitive price, fast lead time.

5. After-sale Service:

1) All products will have been strictly Quality Checked before packing.

2) All products will be well packed before shipping.

3) All our products have 2 year warranty. And we sure the product will be free from maintenance within warranty period.

6. Fast delivery:

Sample order in stock and 3-7 working days for bulk production.

7. Payment

You can pay for the order via T/T, Western Union, Paypal & MoneyGram.

8. Shipping

We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS, CHINA AIR POST.

You also can choose your own shipping forwarder.

 Thanks very much for look through the fixed gas detector. Welcome your inquiry.