YJJ Mipex-02-3-I-1-1A (40) NDIR Non-dispersive Infrared Optical Gas Sensor for Coal Mines

Product Description:

YJJ Mipex-02-3-I-1-1A (40) NDIR Non-dispersive Infrared Optical Gas Sensor for Coal Mines

Features:

Sensing principle: NDIR non-dispersive infrared optical gas sensor (specific for methane CH₄)

Model suffix decoding

02: MIPEX-02 basic series (miniature low-power infrared)

3: Stainless steel metal casing (explosion-proof structure)

I: Class I mine explosion-proof (Class I explosion-proof for underground coal mines)

1: Measurement range specification

1A: Hardware version, pin definition, firmware configuration

(40): Range 0 - 40% VOL methane (CH₄), dedicated high-range version for coal mines

I. Basic Overview

Detection of gas: Methane CH₄ (natural gas, mine gas), highly resistant to cross-interference from hydrocarbons

Explosion-proof rating: Ex ia I Ma (mine underground intrinsically safe explosion-proof, Zone 0 applicable), the highest explosion-proof rating exclusive to mines

Structure: Φ20mm micro cylinder, 4-pin straight plug pins, fully sealed stainless steel gas chamber, built-in infrared light source + detector + MCU, equipped with temperature compensation

Core positioning: A high-range, low-power infrared methane sensor for coal mine gas and natural gas, replacing catalytic combustion type, resistant to poisoning, with extremely long lifespan, and no oxygen deficiency failure issue

II. Complete Interpretation of Model Code plaintext

MIPEX-02 - 3 - I - 1 - 1A (40)

Basic Series Shell Explosion Protection Grade Range Setting Hardware Version Final Range

02: NDIR Infrared Methane 3 = Stainless Steel I = Coal Mine Class I 1 = Large Range 1A = Firmware (40) = 0 - 40% VOL CH₄

III. Core Measurement Parameters (Original Factory Specifications)

1. Range and Accuracy

Measured Gas: Methane CH₄ (Gas)

Measurement Range: 0 - 40% VOL (40) (Exclusive Range)

Measurement Accuracy: ±0.2% VOL (0 - 5%); ± Full Range 1.5% (Full Range)

Resolution: 0.01% VOL

Linearity: <1% FS, Built-in Factory Linearity Calibration

Cross-interference: Low interference with ethane, propane, etc. alkanes, exclusive high selectivity for methane

2. Response and Preheating

Preheating Time: ≤120s (Power-on Stability)

Response Time T90: ≤5s (Without Dust Filter); ≤15s (With Dust Filter); ≤8s

Recovery Time: ≤8s

Long-Term Drift: <0.5% FS / Year

IV. Complete Electrical Parameters

1. Power Consumption (Ultra-Low Power Consumption, Battery Power Supply Preferred)

Operating Voltage: 3.0 - 4.5 V DC (Typical 3.3V)

Average Operating Current: <0.5mA

Overall Power Consumption: <1.5 mW (Industry's Lowest Power Consumption Infrared Sensor)

Sleep Power Consumption: μA Level

2. Signal Output

Communication Interface: Full Digital UART (Serial Port TTL)

Baud Rate: Default 9600 bps

Data Format: 8N1 (8 Data Bits, 1 Stop Bit, No Parity)

Built-In: Temperature Compensation, Atmospheric Pressure Compensation, Data Calibration Storage, Direct Output of Concentration Value, No External Algorithm Conversion Required

3. Working Environment Parameters

Operating Temperature: -40℃ ～ +60℃ (I Class Wide Temperature Mining Edition)

Environmental Humidity: 0 - 98% RH (No Condensation)

Atmospheric Pressure: 80 - 120 kPa

Protection Grade: IP54, Dust and Splash Waterproof, Built-in Gas Chamber Waterproof Vapor

Storage Temperature: -55℃ ～ +60℃

V. Physical Dimensions and Structure

Shape Dimensions: Φ20.3 mm × 16.6 mm (Excluding Pins)

Shell: 304 Stainless Steel (Model 3 Specification), Strong, Impact-resistant, Mine-Use Explosion-proof Shell

Weight: 16.6 g (Stainless Steel Edition)

Pins: 4 Pin Standard Straight Insert Metal Pins, PCB Direct Welding

Design Life: ≥10 Years (Infrared Optics No Consumables, No Catalyst Poisoning and Degradation)

VI. Explosion Safety Certification (Core Mine-Use Qualifications)

Explosion Standard: Ex ia I Ma (IEC 60079 Mine Class I, Intrinsically Safe, Highest Explosion Protection Grade, Mine 0 Zone Available)

Applicable: Underground Coal Mines, Methane Hazardous Environments, No Electric Spark, No Detonation Risk

Disadvantages of Catalytic Combustion Sensors: Not afraid of silicon poisoning, not afraid of high concentration gas impact, no oxygen deficiency failure

VII. Product Core Advantages

Exclusive Large Range (40): 0 - 40% VOL, Covers All Hazardous Intervals of Mine Gas (Explosion Lower Limit 5% VOL)

Top Mine-Use Explosion Protection: Ex ia I Ma, Only Compliant Mine Underground Infrared Methane Sensor Solution

Extremely Low Power Consumption <1.5mW, Compatible with Battery-Powered Portable, Wireless Monitoring Equipment

Optical Principle Advantage: 10-Year Lifespan, No Catalyst Poisoning, High Stability, Very Small Temperature Drift

Built-In Full Compensation: Built-in Temperature and Atmospheric Pressure Compensation, Factory Calibration, Single Chip Direct Read Concentration

Stainless Steel Strong Shell, Anti-Dust, Humidity, Underground Harsh Environment

Digital UART Output, Circuit Extremely Simple, No Peripheral Signal Conditioning Circuit

VIII. Main Applications and Application Scenarios

1. Core Application Coal mine underground methane concentration monitoring, large-range leakage detection of natural gas, mine safety early warning

2. Application Segmentation

Coal mining and mining industry (dominant)

Underground gas inspection instrument, portable gas detector

Fixed gas sensor, mine safety monitoring substation, online gas monitoring in tunnels

Over-limit alarm for gas in coal mining face, excavation face, tunnel, sealed area

Oil and gas energy industry

Long-distance natural gas pipeline, station large-range leakage monitoring

Methane high-concentration detection in oil fields, refining and chemical plant areas

Industrial security equipment

Fixed combustible gas detector, industrial gas analyzer

Methane dissolved in transformer oil (oil-gas faults) monitoring

Portable / Wireless devices

Low-power battery-powered handheld detector, IoT wireless gas monitoring node

Specifications: