- Model NumberQB2000N
- Brand NameHNCCDQ
- Payment TermsT/T, paypal
Brief introduction:
The gas detection transmitter of QB2000N module is a natural diffusion method to detect gas concentration. Imported sensors are adopted, which have excellent sensitivity and repeatability. LCD LCD or LED digital display suitable for factory application can display the concentration value of leakage gas in real time, and start up the sound and light alarm signal or drive the exhaust air system immediately after exceeding the preset alarm point; International standard 4-20ma signal can be directly connected to the DCS system of the factory. RS485 digital signal is connected to the upper computer of the factory. The instrument adopts embedded micro-control technology, simple operation, complete functions, high reliability, reliable performance of the whole machine.
QB2000N intelligent modular gas detector is a fixed instrument that can continuously detect the concentration of gas in the operating environment.
QB2000N intelligent modular gas detector has the characteristics of excellent performance, stable and reliable operation, convenient installation and maintenance, complete types of gas measurement, etc., which greatly meets the requirements of high reliability and stable operation of equipment and diversified types of gas measurement for safety monitoring on the industrial site. It has been widely used in petroleum, chemical, metallurgy, refining, gas transmission and distribution, biochemical medicine and water treatment industries.
QB2000N intelligent modular gas detector is composed of cast aluminum shell, stainless steel sensor breathing device, sensor module, display module, main control module, digital communication module, dust cover, calibration cover.
Standard three-wire system 4-20ma current signal output, compatible with the existing alarm control unit or DCS(decentralized control system)
Suitable for factory application of LED field display (optional liquid crystal display)
Sensor fault automatic identification and field display, and output the corresponding fault current signal
Digital mixer - 30 ~ + 60 ℃ temperature automatic tracking compensation, ensure measurement accuracy
Standard three keys to achieve a single point of field maintenance
Field two-stage light alarm, relay output (external sound and light alarm or drive exhaust air and other peripheral equipment)
Main functions:
1. Support free combination of various modules, that is, gas detectors with different functions can be formed. Ordinary gas detector is composed of main control module and intelligent sensor module, can be equipped with relay output, the output sound and light alarm, insert the RS485 communication module which has the isolation of RS485 signals output, digital tube display module that is inserted into the liquid crystal display module or with digital display, high and low to alarm and fault state indicator light, infrared remote control function.
2. RS485 signal output with signal isolation, standard Modbus_RTU communication protocol.
Support direct connection with Siemens PLC or PLC or acquisition module at home and abroad, no need to add RS485 isolation module.
3. Liquid crystal display module and digital tube display module can be switched freely, and quick hot plug and plug, namely plug and play.
4. The new gas detector adopts standard interface, each module has interchangeability, and it is simple and convenient to replace the sensor module.
5. The sensor module and detector have anti-misplug interfaces, which will not be misplugged. And positioning plug only gently spinning, can be easily aligned with the insertion.
6. The detector can be replaced with the same type of sensor, different types of gas sensor and different range sensor modules, and the operation and identification are completed automatically. Catalytic combustion sensor and electrochemical sensor can be replaced at will.
7. No calibration setting is required after any sensor module is inserted. Detector automatically identifies, reads the factory calibration data and relevant setting values, and runs immediately after the completion of self-inspection.
8. Replace the new factory sensor module with the old detector, so that the detector can have the same detection and alarm accuracy as the factory, and meet the measurement and other detection requirements.
9. Once the most vulnerable to damage and expired sensors fail, customers can find and solve problems by themselves through the convenient replacement of integrated detectors, thus avoiding the delay of door-to-door service and labor costs.
10. Inventory sensor module and detector module components, combined production, greatly shorten the production and delivery cycle under the same inventory.
Technical parameters:
Applicable gas: combustible gas, oxygen, toxic and harmful gas
Working environment: - 30 ℃ ~ + 50 ° ℃;
Humidity <90%RH no condensation
Display error: less than or equal to 5%FS
Working voltage: DC24 plus or minus 15%
Response time: T90<30S
Explosion-proof grade: Exd Ⅱ CT6
Alarm point: first alarm, the user can change the setting;
Second alarm, user can change the setting
Protection level: IP66
Alarm prompt: ultra bright light alarm indicator
Display mode :L)ED digital tube display (optional LCD)
Alarm output: passive switching output, capacity AC 220V 2A;
Independent acoustooptic alarm output **(optional)
Mounting thread: M20 * 1.5, g1/2 **
Signal output: standard 4-20ma signal;
RS485 isolated digital signal (optional)
Use cable: 3 x 1.5mm2 or 4 x 25mm2 shielded cable
External structure: cast aluminum shell
Installation: wall type or pipe type
Transmission distance: less than or equal to 1000m
Size and weight: 160mm(L)*140mm(W)*85mm(H), approx. 1.5kg
