Overview
GUOYUGRA GY/VGD-200-NO2-G (0-200ppm) nitrogen dioxide detector is a low-power Modular design using MCU chip, with intelligent Sensor detection technology, overall flameproof (d) structure, fixed Installation method detector. The standard configuration is LCDTFT high definition LCD display, three-wire system 4~ 20mA analog, RS485 digital and switching signal output, customized products are provided according to user requests, and Output signal fine-tuning and other functions are also supported, which is convenient for system networking and maintenance.
Features
1. Customizable Range Intelligent Sensor is adopted to ensure the advantages of high Sensitivity, high accuracy, linear stability and fast Response of the detector
2. The MCU chip is used, highlighting the low power consumption of the detector, safe and reliable performance, accurate data conversion, stable signal output, etc
3.4-20mA, RS485, switch and other signal output, easy access to PLC, DCS, DDC and other industrial control systems, can also be a single machine through the switch linkage fan, solenoid valve and other control equipment
4. Support customized wireless signal transmission: Zigbee, LORA, 433M, 4G, WiFi, NB, GPRS, etc
5 point array high definition LCDTFT LCD screen, Chinese and English Operating interface can be switched
6. The alarm value, zero adjustment, calibrate, reset, modify the address code and other function menu operations of the detector can be performed by remote control without opening the lid
7. Local integrated sound and light alarm indication, remote mobile phones, computers, monitoring rooms, third-party platforms and other alarm prompts can be realized through alarm control host or wireless signal, and infrared remote control can also be silenced with one click
8. Aluminum alloy cast explosion-proof shell, sturdy and durable
9. Passed a variety of CMA, CNAS, CE, ROHS, SIL, UL, ECM safety and other international certifications
10. Explosion-proof certificate grade: Ex db IIC T6 Gb; explosion-proof certificate number: SYEx23.04100
Principle
The nitrogen dioxide detector adopts the principle of catalytic combustion detection and detects NO2 gas by diffusion Sampling method. The detector performs data processing on the detected gas concentration signal through the MCU chip, and outputs 4-20mA analog signal, RS485 digital signal and switching signal to realize the accurate monitoring and alarm function of gas concentration.
Applications
Workplace environment Gas detection, industrial process control, safety monitoring system, electrical installation in dangerous places, flammability dust environment
Standards
GB/T3836.1-2021 "Explosive environment Part 1: General requirements", GB/T3836.31-2021 "Explosive environment Part 31: Equipment protected by anti-dust ignition enclosure" t ", GB3836.15-2000" Electrical equipment for explosive gas environment Part 15: Electrical installation in hazardous places (except coal mines) ", GB 1 2476.1 - 20 1 3" Electrical equipment for flammability dust environment Part 1: General requirements ", GB12358-2006" General technical requirements for workplace environment Gas detection alarms ", GBZ2.1-2007" Occupational exposure limits for hazardous factors in the workplace ", GB4208-2008" Shell Protection Rating (IP code) "
Steps
1. Install the detector to ensure that the electrical interface is connected correctly
2. Connect DC24V Power Supply
3. Set the alarm value through the remote control
4. Zero operation through remote control
5. Remote control for calibrating operation
6. Modify the address code through the remote control
7. Monitor the detector to display data
8. Connect external alarm device or Control system as needed
Notice
• Operating voltage range is DC12V~ 30V, please ensure that Power supply voltage is within this range
• Ambient Temperature -20~ 50 ℃, beyond this range may affect the detection accuracy
• Environmental humidity is 10-95% RH, condensation should be avoided
• Sensor life is 2~ 3 years, depending on the Operating Environment
• Connecting cable selection: 4~ 20mA choose three-core Shielding cable, RS485 choose four-core cable
• When the transmission distance exceeds 1000 meters, the diameter of a single wire should be ≥ 1.5mm, and the Shielding layer needs to be connected to the earth
• The explosion-proof form is Probe Transmitter and Sensor are explosion-proof, and the installation must meet the explosion-proof requirements
• Electrical interface default M20X1.5 internal thread, optional 3/4NPT, 1/2NPT
• Measurement certificate is optional, the cost is paid by the user
