SDJ-4 Four-in-One Gas Detector (Class II)
采用热催化及电化学传感器，嵌入式微控制器智能控制技术，LCD屏显示，可实时检测环境空气中的可燃气体（EX）、CO、O₂、H₂S四种气体浓度
Classification:
Instruments and Meters
Product description
Product Overview
● Equipped with thermal catalytic and electrochemical sensors, along with embedded microcontroller-based intelligent control technology and an LCD display, this device can detect the concentrations of four gases—combustible gases (EX), CO, O₂, and H₂S—in ambient air in real time.
● Features and functions include intelligent calibration, date and time display, automatic backlight, intermittent audio-visual alarm, adjustable alarm thresholds, and low-voltage warning.
Technical specifications
| Tested gas | Flammable gas (EX) | CO | O₂ | H₂5 | |
| Measurement range | (0–100)%LEL | (0–1000) × 10 -6 | (0.0–30.0%) O₂ | (0~100) x 10 -6 | |
| Basic error | ±5%FS | ±10% | ±3% of FS | ±10% | |
| Response time | ≤60s | ≤60s | ≤60s | ≤60s | |
| Resolution | 1 | 1 | 0.1 | 1 | |
| Sensor lifespan | >1 year | > 2 years | |||
| Sound level intensity | >80dB | ||||
| Battery pack | YXLPM/1.5A/3.7V Lithium Manganese Oxide Lithium-Ion Battery | ||||
| Continuous working hours | >10h | ||||
| Explosion-proof Type | Ex from IIB T4 Gb | ||||
| External dimensions | (130x67x30.5) mm | ||||
| Product Certification | Explosion-proof Certificate Number | HNABEx23.12006 | |||
| Supporting Information | Standard configuration | Charger, inspection cover, leather case, USB cable | |||
| Optional equipment | BC-50 Mining Instrument Charging Rack, BZC-50 Intelligent Instrument Charging Management System | ||||
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