The gas concentration Detector is a low-power modular design with MCU chip, intelligent sensor detection technology, integral flameproof (d) structure, and fixed installation method. The standard configuration is LCD tft high-definition liquid crystal display, three-wire 4~20mA analog, RS485 digital and switching signal output, providing customized products according to user needs, and also supporting output signal fine-tuning and other functions, which is convenient for system networking and maintenance.
GB/T3836.1-2021 "Explosive atmospheres Part I: General requirements"
GB/T3836.31-2021 "Explosive atmospheres Part 31: Equipment protected by anti-dust ignition enclosure "t"
GB3836.15-2000 "Electrical Equipment for Explosive Gas Atmospheres Part 15: Electrical Installation in Hazardous Locations (Except Coal Mines)"
GB12476.1-2013 "Electrical Equipment for Combustible Dust Environments Part 1: General Requirements" GB12358-2006 "General Technical Requirements for Workplace Ambient Gas Detection and Alarm Instruments"
GBZ2.1-2007 "Occupational Exposure Limits for Hazardous Factors in the Workplace"
GB4208-2008
The use of customizable range intelligent sensors ensures the advantages of high sensitivity, high precision, stable linearity, and fast response of the Detector.
The MCU chip is used, which highlights the low power consumption, safe and reliable performance, accurate data conversion, and stable signal output of the Detector. 4-20mA, RS485, switching and other signal outputs, easy to access PLC, DCS, DDC and other industrial control systems, can also be linked to fans, solenoid valves and other control equipment through switching units;
Support customized wireless signal transmission: Zigbee, LORA, 433M, 4G, WiFi, NB, GPRS, etc.;
Dot matrix high-definition LCDTFT LCD screen, Chinese and English operation interface can be switched by itself;
The Detector can be operated by remote control without opening the cover, such as alarm value, zero adjustment, calibration, reset, modification of address code and other function menus;
Local integrated sound and light alarm indication can realize remote mobile phone, computer, monitoring room, third-party platform and other alarm prompts through alarm control host or wireless signal, and can also be infrared remote control one-key silencing;
Aluminum alloy cast explosion-proof shell, strong and durable;
It has passed a variety of CMA, CNAS, CE, ROHS, SIL, UL, ECM safety and other international certifications.
Explosion-proof certificate level: Ex db IIC T6 Gb;
Explosion-proof certificate number: SYEx23.04100.


| GY/VGD-200 host other measurable toxic gas list | |||||
| The name of the gas | molecular formula | Measuring range (ppm) | The name of the gas | molecular formula | Measuring range (ppm) |
| carbon monoxide | CO | 0-200/1000/2000 | Silanes | S IH4 | 0-20/50 |
| oxygen | O2 | 0-25%/30%/100% | hydrogen peroxide | H2O2 | 0-50/100/2000 |
| hydrogen sulfide | H2S | 0-50/100/200/500 | phosgene | COCL2 | 0-1 |
| hydrogen | H2 | 0-1000/2000/40000 | chlorine dioxide | CLO2 | 36545 |
| sulfur dioxide | SO2 | 0-20/100/200/2000 | Fluorine | F2 | 0-1 |
| nitrogen dioxide | NO2 | 0-20/100/2000 | Tetrahydrothiophene | C4H4S | 0-50 mg/m3 |
| nitric oxide | NO | 0-20/100/2000 | Hydrogen selenide | SEH2 | 0-5 |
| chlorine | CL2 | 0-20/200 | hydrogen fluoride | HF | 0-10 |
| hydrogen chloride | HCL | 0-20/50/200 | Methyl mercaptan | CH3SH | 0-10 |
| flammability | EX | 0-1/5/100/2000 | carbon dioxide | CO2 | 0-2000/5000/10000 |
| formaldehyde | CH2O | 0-10/50/100 | ethylene | C2H4 | 0-10/20/100/2000 |
| ethylene oxide | C2H4O | 0-10/50/100/500 | Hydrogen bromide | HBR | 0-20/200 |
| hydrazine | N2H4 | 0-1 | Bromine | BR2 | 0-20/200 |
| ammonia | NH3 | 0-50/100/1000 | Hydrogen arsenic | ASH3 | 0-1 |
| flammability | EX | 0-20/30/100 | ozone | O3 | 0-1/5/10/50/100/200 |
| Sulfur hexafluoride | SF6 | 0-1000 ,2000 | Ethylborane | B2H6 | 0-1 |
| freon | CFC/R507 | 0-1000/2000 | Refrigerant | RX | 0-2000/5000 |
| freon | R12/R22 | 0-1000/2000 | freon | R113/R114 | 0-1000/2000 |
| freon | R125/R290 | 0-1000/2000 | freon | R134a/R404a | 0-1000/2000 |