Overview
The NOx detector is a GUOYUGRA GY/VGD-200-NOX-G (0-20ppm) high-performance product, using MCU chip low-power Modular design, with intelligent Sensor detection technology, overall explosion-proof (d) structure, fixed Installation method. Standard configuration includes LCDTFT high definition LCD display, three-wire system 4~ 20mA analog, RS485 digital and switching signal output, support customized products and Output signal fine-tuning, easy system networking and maintenance.
Features
1. Customizable Range Intelligent Sensor, High Sensitivity, High Accuracy, Linear Stability, Fast Response
2. MCU chip design, low power consumption, safe and reliable performance, accurate data conversion, stable signal output
3. Support 4-20mA, RS485, switch and other signal output, can be connected to PLC, DCS, DDC and other industrial control systems or stand-alone linkage control equipment
4. Customizable 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. Remote control without opening the lid operation alarm value, zero adjustment, calibrate, reset, modify the address code and other functions
7. Local sound and light alarm, support remote alarm prompt and infrared remote control one-button muffler
8. Aluminum alloy cast explosion-proof shell, sturdy and durable
9. Passed CMA, CNAS, CE, ROHS, SIL, UL, ECM and other international certifications
10. Explosion-proof level Ex db IIC T6 Gb, explosion-proof certificate number SYEx23.04100
Principle
The detector adopts the principle of catalytic combustion detection and detects gas concentration by diffusion Sampling method. Sensor converts gas concentration into electrical signal, processed by MCU chip, and outputs standard signal such as 4-20mA, RS485, etc., to realize gas concentration monitoring and alarm function.
Applications
Workplace environment Gas detection, industrial process control, safety monitoring system, electrical installation in dangerous places, flammability dust environment
Standards
GB/T3836.1-2021、GB/T3836.31-2021、GB3836.15-2000、GB12476.1-2013、GB12358-2006、GBZ2.1-2007、GB4208-2008
Steps
1. Install the tester to ensure that the electrical interfaces and cables are connected correctly
2. Power Supply DC24V
3. Set the alarm value, zero adjustment, calibrating and other parameters through the remote control or Operating interface
4. Monitor LCDTFT display data to observe gas concentration
5. Connect external devices such as PLCs, DCS, or alarm systems as required
6. Regularly maintain and calibrate Sensors
Notice
* Operating voltage range is DC12V~ 30V to ensure stable power supply
* Ambient Temperature -20~ 50 ℃, Humidity 10-95% RH (non-condensing)
* Sensor life 2~ 3 years, regular replacement according to Operating Environment
* Cable selection: three-core Shielding cable for 4~ 20mA, four-core for RS485, single wire diameter ≥ 1.5mm when exceeding 1000 meters, Shielding layer grounding
The explosion-proof form is explosion-proof, and the installation and maintenance must meet the explosion-proof requirements
* Alarm settings support two-level alarm, can customize Alarm mode
When selecting wireless transmission, ensure module compatibility and signal stability
* Measurement certificate is optional, the user pays the fee
