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DONGCHA Series

Insight Series Fixed Nitrogen Tetroxide Detector

Model: YQGD
Key Features: Modularization, 316L stainless steel casing, split-type design, dual explosion-proof certification

Sales Hotline
136-8498-6459
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Product Overview

Utilizing a series of award-winning innovative anti-poisoning sensor technologies, U-Right continuously enhances its gas detection-related technologies. The Insight series of fixed gas detectors not only provides customers with accurate combustible gas concentration alarm outputs but also offers fast and convenient operation, easy maintenance, and helps save overall installation and maintenance costs. The Insight series gas detectors can automatically identify the gas type, range, and calibration data of the intelligent sensing unit. They provide fault indications for missing or failed sensors. The detectors are operated and calibrated using infrared remote control, allowing one person to complete calibration and setup. They feature 4-20mA current output, ISBUS bus output, and two-way relay output. Their main functions are: converting the gas concentration detected on-site into corresponding standard signals, and then transmitting these signals to upper computers such as PLCs, DCSs, and alarm control hosts for unified display management and control, thus forming a powerful intelligent gas detection and alarm control system

Application Scenarios

Product Features:

☆ The sensor unit incorporates built-in temperature compensation and calibration coefficients, featuring high accuracy and excellent linearity

☆ Equipped with an OLED Chinese display screen, it displays the type of gas and the measured concentration value

☆ Equipped with four status indicator lights, displaying the operational status of the gas detector (low limit alarm, high limit alarm, operating, fault)

☆ The structural design is reasonable, featuring modular internal units and industrial-grade wiring terminals for convenient wiring

☆ Infrared remote control operation, allowing menu setting and calibration to be completed by a single person

☆ Provides excellent stability and response recovery speed, resistance to radio frequency/electromagnetic interference, and reduces false alarms

☆ Integrated with simple calibration, automatic zero verification, and automatic compensation programs

☆316L stainless steel housing, explosion-proof protection suitable for most harsh industrial environments

The display unit and sensing unit can be installed in an integrated or separate manner

 

Product Specifications

1. Performance

Detected gases: combustible gases, toxic gases, oxygen, VOCs

Detection principle: Contact the manufacturer

Measurement range: Contact the manufacturer

Accuracy: ±3%LEL (combustible gas) / ±3%FS (toxic gas)

Repeatability: ≤2%

Response time: T90 ≤ *** standard

Sampling methods: diffusion, pump-aspirated, flow-through

Display: OLED Chinese display screen, displaying concentration and operation menu; equipped with four working status indicator lights: power, fault, alarm 1, alarm 2

Calibration adjustment: Settings are made using an infrared wireless remote control, without the need to open the cover

2. Electrical Characteristics

Power consumption: <2.5W (combustible gas, excluding sound and light), <1.5W (toxic gas, excluding sound and light)

Output signal: 4-20mA current interface, ISbus bus, two sets of relay outputs

Audible and visual alarm: local audible and visual alarm

Relays: 3 sets of relays (1A@30VDC)

3. Structural characteristics

Main material: ADC12 aluminum alloy / 316 stainless steel

Sensor probe: aluminum alloy/stainless steel

Electrical Interface: The main body features two 3/4″ NPT (female) interfaces and one 1/2″ NPT (female) interface Optional M20×1.5 or G1/2 or G3/4, please specify when ordering

Installation methods: wall-mounted, horizontal duct, vertical duct

4. Certification

Dual explosion-proof certification (with dust explosion-proof): ExdⅡCT6, flameproof type

Fire certification: fire product certification

Metrological Accreditation: CPA

Functional safety certification: SIL2

Protection level: IP66

5. Applicable Standards

GB15322.1-2019, GB/T3836.1-2021, GB/T3836.2-2021, GB/T3836.31-2021, GB/T3836.4-2021, JJF1368-2012,

GB/T4208-2017

6. Operating Environment

Protection level: IP66/IP67

Temperature range: -40℃~70℃/270℃ (flammable), -40℃~50℃ (toxic gases, oxygen, TVOC)

Humidity range: 15~95%RH (non-condensing)

Pressure range: 80~120KPa

Gas Factors Detectable by This Product

These are the gas factors this model supports. Click to see detailed product compatibility (600+ factors →)

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