Model QB2000N -Module Flammable Gas Detection Transmitter

FromHenan Chicheng Electric Co., Ltd.

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QB2000N module flammable gas detection transmitter detects the gas concentration by natural diffusion method, adopts imported catalytic combustion type sensor, has excellent sensitivity and excellent repeatability; LCD liquid crystal or LED digital display suitable for factory application displays the concentration of leaked gas in real time. Value, exceed the preset alarm point, immediately start the sound and light alarm signal or drive the exhaust system; the international standard 4-20mA signal can be directly connected to the factory DCS system, RS485 digital signal is connected with the factory host computer; the instrument adopts embedded micro-control technology, operation Simple, full-featured, high reliability, and reliable machine performance.

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QB2000N intelligent modular gas detector is a fixed type of flammable gas concentration instrument for continuous detection of working environment.
QB2000N intelligent modular gas detector has the characteristics of excellent performance, stable and reliable operation, convenient installation and maintenance, and complete measuring gas types. It greatly satisfies the industrial site safety monitoring, high reliability and stable operation of equipment and diversified gas types. Requirements; has been widely used in petroleum, chemical, metallurgy, refining, gas transmission and distribution, biochemical medicine and water treatment industries.
QB2000N intelligent modular gas detector consists of cast aluminum housing, stainless steel sensor breathing device, sensor module, display module, main control module, digital communication module, dust cover and calibration cover.
Standard three-wire 4-20mA current signal output, compatible with existing alarm control unit or DCS (distributed control system)
LED field display suitable for factory applications (optional LCD display)
The sensor fault is automatically recognized and displayed on the spot, and the corresponding fault current signal is output at the same time.
-30～+60°C temperature digital automatic tracking compensation to ensure measurement accuracy
Standard three-button for single-site on-site maintenance
On-site two-level light alarm, relay output (external sound and light alarm or peripheral equipment such as driving exhaust)

Supporting the free combination of various modules, that is, it can constitute a gas detector with different functions. The ordinary gas detector is composed of a main control module and an intelligent sensor module. It can be equipped with a relay output, an audible and visual alarm output, and an RS485 communication module with an isolated RS485 signal output. The LCD module or the digital tube display module has a digital input. Display, high and low light alarm, fault status indication, infrared remote control function
RS485 signal output with signal isolation, standard Modbus_RTU communication protocol. Supports direct connection to Siemens PLC or PLC or acquisition module at home and abroad, without the need to add RS485 isolation module.
support LCD display module, digital tube display module freely switch, fast hot swap, plug and play.
The new gas detector adopts standard interface, and each module has interchangeability. It is simple and convenient to replace the sensor module.
The sensor module and detector have anti-missing interface and will not be inserted incorrectly. And the positioning plug can be easily aligned by simply spinning.
The detector can replace the same type of sensor, or replace different gas type sensors and different range sensor modules, and the operation and recognition are automatically completed. The catalytic combustion sensor and the electrochemical sensor can be replaced at will.
No calibration settings are required no matter what sensor module is inserted. The detector automatically recognizes, reads the factory calibration data and related setting values, and runs immediately after the self-test is completed.
The new factory sensor module is replaced with the old detector, so that the detector can have the same detection and alarm accuracy as the factory, and meet the measurement requirements such as measurement.
Once the easily damaged and expired sensor fails, the customer can find the solution through the convenient replacement of the integrated detector, avoiding the delay of the on-site service and labor costs.
inventory sensor module and detector module components, combined production, under the same inventory, greatly shorten the production and delivery cycle.