YJJ MIPEX-02-1-I-3.1A (20) NDIR Infrared Methane CH4 Gas Sensor Suitable Coal Mines/Underground

Product Description:

YJJ MIPEX-02-1-I-3.1A (20) NDIR Infrared Methane CH4 Gas Sensor Suitable Coal Mines/Underground

Features:

I. Model Meaning (MIPEX-02-1-I-3.1A)

MIPEX-02: Series (Second-generation NDIR, Low Power Consumption)

1: Gas Type = Methane CH₄ (0–100% VOL)

I: Class I explosion-proof (Applicable in coal mines / underground environments) Ex ia I Ma U

3.1A: Range = 0–100% VOL CH₄, Standard Accuracy Version

(20): Batch / Calibration Code

II. Core Parameters

1. Electrical and Power Consumption

Power Supply: 3.0–5.0V DC (Recommended 3.3V)

Power Consumption: <3 mW (Typical 1.5 mW), Industry's Lowest

Interface: Full digital UART (TTL), No Analog Calibration Required

Size: φ20.3 × 16.6 mm (Metal Package)

Weight: Approximately 15.5 g

2. Measurement Performance (CH₄)

Range: 0–100% VOL (Can also measure 0–100% LEL)

Accuracy: ±0.1% VOL or ±5% Reading (Take the Higher Value)

Response T90: ≤30 s (Fast Version < 10 s)

Repeatability: ≤±0.05% VOL

Long-Term Stability: Drift < 2%/Year, Lifespan 10 Years +

3. Environment and Explosion-proof

Temperature: -40℃ ~ +60℃ (Ultra-Wide Temperature Range)

Humidity: 0–98% RH (No Condensation)

Explosion-proof: Ex ia I Ma U / Ex ia IIC Ga U (ATEX/IECEx)

Certification: ATEX, IECEx, ETL, ISO 9001

III. Working Principle (NDIR Infrared)

Based on Non-Dispersive Infrared Absorption (NDIR), Dual Beam (Signal + Reference) Compensation for Drift

Built-in High-Performance Infrared LED + PbSe-CdSe Photodiode (Sensitivity 10 Times Higher than Thermosensitive)

Integrated Temperature Sensor + Microcontroller, Automatic Linearization and Temperature Compensation

Resistant to Moisture, Dust, Long-Term Drift, Suitable for Harsh Industrial Environments

IV. Main Applications

1. Coal Mine / Mine Safety (Core Scenario of Class I Explosion-proof)

Underground Methane (Gas) Monitoring, Portable Instrument / Fixed Probe

Gas Over-limit Alarm in Tunnels, Shafts, Mining Surfaces, Prevention of Explosions

2. Oil and Gas (Upstream / Downstream)

CH₄ Leak Detection on Drilling Platforms, LNG Storage Tanks, Gas Pipelines

Gas Monitoring in Refineries, Compressor Rooms, Gas Stations

3. Industrial Safety and Environmental Protection

CH₄ Concentration Monitoring in Chemicals, Coking, Biogas Projects, Sewage Treatment

Gas Warning in Underground Pipe Lanes, Cable Tunnels, Enclosed Spaces

4. Portable Equipment and Internet of Things

Handheld Gas Detector, Wireless Sensor Node (Ultra-Low Power Consumption, Battery Available for Years)

Smart Home Gas Alarm, Industrial IoT Remote Monitoring Terminal

Specifications: