Overview
GUOYUGRA GY/VGD-200-CxHy-G (0-200ppm) non-methane total hydrocarbon detector is a low-power Modular design using MCU chip, with intelligent Sensor detection technology, overall flameproof (d) structure, fixed Installation method detector. Standard configuration is LCDTFT high definition LCD display, three-wire system 4~ 20mA analog, RS485 digital and switching signal output, provide customized products according to user requests, and also support Output signal fine-tuning and other functions, convenient system networking and maintenance.
Features
1. Adopt Customizable Range Intelligent Sensor, which guarantees the advantages of high Sensitivity, high accuracy, linear stability and fast Response of the detector;
2. The use of MCU chip highlights 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 detector can be operated by remote control without opening the lid to perform function menu operations such as alarm value, zero adjustment, calibrating, reset, and modification of the address code;
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 body 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 detector adopts the principle of electrochemistry detection and detects gas concentration by diffusion Sampling method. The detector performs data processing and conversion of the detected gas concentration signal through the MCU chip, and outputs standard signals for user equipment.
Applications
Workplace environment Gas detection, industrial process control, safety monitoring
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. Carry out function menu operations such as alarm value, zero adjustment, calibrate, reset, and address code modification of the detector through remote control without opening the lid;
2. Connection cable: 4~ 20mA choose three-core Shielding cable, RS485 choose four-core;
3. Set Alarm mode: Conventional high and low alarm, interval control alarm;
4. Output signal access to user computer, control alarm, PLC, DCS, DDC and other equipment.
Notice
• Operating voltage: DC24V (12V~ 30V)
• Ambient Temperature: -20~ 50 ℃
• Environmental humidity: 10-95% RH (non-condensing)
Sensor life: 2~ 3 years (depending on the environment used)
Explosion-proof form: Probe Transmitters and Sensors are flameproof
• When the connection cable distance exceeds 1000 meters (with a detector), the single wire diameter is ≥ 1.5mm, and the Shielding layer is connected to the earth
• Electrical interface: default M20X1.5 internal thread, optional 3/4NPT, 1/2NPT
