YJJ MIPEX-02-1-II-1.1A (21) Low-power NDIR Non-dispersive Infrared Optical Gas Sensor for Oil and Gas Energy

Product Description:

YJJ MIPEX-02-1-II-1.1A (21) Low-power NDIR Non-dispersive Infrared Optical Gas Sensor for Oil and Gas Energy

Features:

Sensing principle: NDIR non-dispersive infrared optics (specific for methane CH₄, with no chemical poisoning, long lifespan)

Complete disassembly of model code (in accordance with original factory rules) plaintext

MIPEX-02 - 1 - II - 1.1A (21)

Basic Series Housing Explosion-proof Rating Firmware Version Dedicated Range

02: Miniature Low-Power Infrared Methane Sensor

1: **Shell No. 1: Metal Stainless Steel Shell**

II: **II Class Explosion-proof (Ground Industrial Explosion-proof, Non-Mine) Ex ia IIC Ga**

1.1A: Hardware Circuit, Pin Definition, Factory Calibration Firmware Version

(21): **Range 0~21% VOL Methane CH₄**

Detected Gas: Methane CH₄ (Natural Gas, Biogas, Pipeline Gas), High Selectivity, Resistant to Ethane / Propane Cross-Interference

Structure: 4Pin Straight Insert, Fully Sealed Infrared Gas Chamber, Built-in Light Source + Detector + MCU, Full Compensation for Temperature / Atmospheric Pressure, Factory Calibration

II. Core Measurement Parameters (Original Factory 25℃ Reference)

1. Range and Accuracy

Measurement Range: 0 ~ 21% VOL Methane (CH₄) (Suffix (21) Exclusive Large Range)

Measurement Accuracy: ±0.2% VOL (0~5% Interval); ≤ Full Range 1.5% FS (Full Range)

Resolution: 0.01% VOL

Linearity: <1% FS

Cross-Interference: Minimal interference with hydrocarbon mixtures, CO, Water Vapor, Methane Exclusive High Selectivity

2. Response Characteristics

Power-On Preheating Time: ≤ 120s (2 Minutes)

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

Recovery Time: ≤ 8s

Annual Drift: <0.5% FS / Year, Excellent Long-Term Stability

III. Complete Electrical Parameters

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

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

Average Operating Current: <0.5 mA

Overall Power Consumption: <1.5 mW (MIPEX-02 Series Unified Ultra-Low Power Consumption)

Sleep Static Power Consumption: μA Level

2. Signal Output

Communication Interface: Digital UART (TTL Serial Port)

Serial Port Parameters: Baud Rate 9600 bps, Format 8N1 (8 Data Bits, 1 Stop Bit, No Parity)

Built-in Function: Temperature Compensation, Atmospheric Pressure Compensation, Factory Calibration Data Storage, Serial Port Direct Output of True Concentration Value, No External Algorithm Conversion Required

3. Environmental Working Parameters

Working Temperature: -40℃ ～ +60℃ Wide Temperature Industrial Grade

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

Atmospheric Pressure: 80 ~ 120 kPa

Protection Grade: IP54, Dustproof, Splash-proof Water Vapor

Storage Temperature: -55℃ ～ +60℃

IV. Explosion-Proof Rating (Core Different from Your Previous Coal Mine Model)

Explosion Certification: Ex ia IIC Ga (II Class Ground Industrial Intrinsically Safe Explosion-proof)

Explosion Applicability: Factory, Oil and Gas, Chemicals, Outdoor Hazardous Areas (0 Zone General)

Distinguishing Your Previous Model:

I = I Class Coal Mine Underground Special (Ex ia I Ma)

II = II Class Ground Industrial Flammable and Explosive Environment (Ex ia IIC Ga), Can be Used in Chemicals, Oil and Gas, Natural Gas Stations

V. Physical Dimensions and Structural Parameters

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

Shell Material: Shell No. 1 Specification = 304 Stainless Steel Metal Shell, Strong, Impact-resistant, Dust-proof, Moisture-proof

Weight: 16.6 g (Stainless Steel Shell Version)

Pins: 4Pin Gold Plated Straight Insert Pins, PCB Directly Welded Design service life: ≥ 10 years (infrared optics without catalyst and poisoning attenuation, much longer than catalytic combustion sensors)

VI. Core Product Advantages

Exclusive wide range 0 - 21% VOL: Covers the entire range of natural gas explosion (methane explosion lower limit 5% VOL, upper limit 15% VOL), compatible with over-range leakage monitoring

Industrial top-level explosion-proof Ex ia IIC Ga: Ground 0 zone explosion-proof, compliant for use in chemical / oil and gas stations

Extremely low power consumption < 1.5 mW, perfectly compatible with battery-powered portable, wireless IoT monitoring equipment

NDIR optical principle: No silicon poisoning, no high concentration impact damage, no oxygen deficiency failure, 10-year lifespan

Built-in full compensation + factory calibration, single-chip directly serial port reads concentration, peripheral circuits are extremely simple

Stainless steel housing, resistant to dust, moisture, and industrial harsh conditions

VII. Main Applications and Application Scenarios

Core application

Ground industrial natural gas (methane) wide-range leakage monitoring, gas safety detection, gas and oil chemical explosion-proof environment gas monitoring

Subdivided application fields

Oil and gas energy industry (main force)

Natural gas long-distance pipelines, gate stations, pressure regulating stations, field stations leakage monitoring

Oilfield, refining and chemical plant, methane over-limit detection in gas boiler rooms

Urban gas pipeline, municipal gas stations safety monitoring

Industrial security

Fixed combustible gas detector, industrial gas online analyzer

Chemical workshop, explosion-proof factory, methane concentration monitoring in confined spaces

Portable / IoT devices

Battery-powered portable gas detector, handheld inspection instrument

Low-power consumption wireless gas monitoring node, LoRa/NB-IoT IoT sensor

Other scenarios

Methane monitoring in biogas stations, anaerobic tanks of sewage treatment plants

Boilers, gas generators, industrial kilns gas safety protection

Specifications: