G-WON KBA3.7/600LH(A) Intrinsically Safe Infrared Thermal Imaging Thermometer for Mining Applications

Overview

The G-WON KBA3.7/600LH(A) Intrinsically Safe Infrared Thermal Imaging Thermometer is a certified Class I, Division 1 mining-grade portable instrument engineered for non-contact surface temperature measurement, thermal imaging, environmental parameter logging, and visual documentation in hazardous underground coal mine environments. It operates on the principle of broadband infrared radiometry (6–14 µm spectral band), enabling accurate emissivity-compensated temperature acquisition across a wide dynamic range (−50°C to 1000°C). Its dual-laser targeting system provides precise spatial referencing for spot measurements, while the integrated high-resolution thermal sensor and visible-light camera enable synchronized image capture with embedded temperature metadata. Designed to meet the stringent safety requirements of underground mining operations, the device complies fully with GB 3836.1–2021 (Explosive Atmospheres – Part 1: Equipment – General Requirements) and GB 3836.4–2021 (Intrinsically Safe “i” Protection), carrying both the MA (Mine Safety Approval) mark and the national Exib I Mb certification—validating its suitability for use in methane- and coal-dust-laden atmospheres where ignition risk must be eliminated at the circuit level.

Key Features

• Intrinsically safe design per Exib I Mb standard, certified for Zone 0/10 (gas/dust) environments in coal mines
• Simultaneous multi-parameter acquisition: infrared surface temperature, ambient air temperature, relative humidity, wet-bulb temperature, and dew point
• High-precision infrared measurement with ±1% accuracy and 150 ms response time, supported by adjustable emissivity (0.10–1.00)
• Dual-laser targeting system for unambiguous spatial alignment of measurement spot within 50:1 optical distance-to-spot ratio
• Integrated 2.2-inch color LCD (1024×768 px) with real-time thermal overlay, trend curves (MAX/MIN/AVG/DIF), and alarm thresholds (AT/DP)
• K-type thermocouple input channel supporting extended contact measurement (−50°C to 1370°C, ±0.5% accuracy)
• On-device data logging with timestamped thermal images, still photos, short video clips (up to 128 GB microSD), and tabular CSV export capability
• Comprehensive unit conversion (°C/°F), emissivity correction, and material-specific compensation algorithms

Sample Compatibility & Compliance

The KBA3.7/600LH(A) is optimized for industrial surfaces encountered in mining infrastructure—including conveyor belt rollers, motor windings, hydraulic couplings, ventilation ducts, and electrical junction boxes—where surface emissivity varies significantly (e.g., oxidized steel: ε ≈ 0.75; polished copper: ε ≈ 0.03). Its adjustable emissivity function allows calibration against reference sources or known materials, ensuring traceable measurement integrity. The device holds formal certification from the National Mine Safety Administration (NMSA) and carries valid Mine Safety Approval (MA) and Explosion-Proof Certification (Exib I Mb). It satisfies GB/T 19001–2016 (ISO 9001), GB/T 24001–2016 (ISO 14001), and conforms to the functional safety expectations outlined in AQ 1043–2007 (Safety Requirements for Electrical Equipment in Coal Mines). No external calibration tools or proprietary software are required for field verification.

Software & Data Management

Data recorded onboard—including thermal images, time-stamped temperature profiles, humidity logs, and video sequences—is stored in industry-standard formats (JPEG, MP4, CSV) on removable microSD media. The instrument supports direct USB mass-storage mode for drag-and-drop file retrieval without driver installation. While no dedicated PC application is bundled, exported CSV files are compatible with MATLAB, Excel, and statistical process control (SPC) platforms for trend analysis, histogram generation, and compliance reporting. All logged parameters include UTC timestamps and device serial identification, satisfying basic audit-trail requirements under GLP-aligned maintenance protocols. Firmware updates are delivered via signed binary files loaded from SD card, preserving version traceability and cryptographic integrity.

Applications

• Preventive maintenance of mining machinery: early detection of bearing overheating, misalignment-induced friction, or cooling system failure
• Electrical safety inspections: thermal mapping of switchgear, transformers, and cable terminations to identify hotspots before insulation breakdown
• Environmental monitoring in intake/return airways: simultaneous recording of dry-bulb, wet-bulb, dew point, and relative humidity for ventilation efficiency assessment
• Fire risk evaluation in coal stockpiles and conveyor transfer points using thermal gradient analysis
• Post-explosion investigation support: time-synchronized thermal imagery and ambient condition logging for root-cause reconstruction
• Regulatory compliance documentation: generation of auditable temperature logs meeting AQ 1029–2019 (Coal Mine Safety Monitoring System Technical Requirements)

FAQ

Is the KBA3.7/600LH(A) approved for use in gassy coal mines?

Yes. It holds Exib I Mb certification and MA approval, permitting operation in methane-air mixtures (Group I) and combustible coal dust environments (Zone 10) per GB 3836.4–2021.
Can emissivity be adjusted during field measurement?

Yes. Emissivity is user-configurable in 0.01 increments from 0.10 to 1.00 via the on-screen menu, with presets available for common mining materials.
What is the maximum supported microSD capacity?

The device accepts microSD cards up to 128 GB formatted as FAT32. An 8 GB card is supplied as standard.
Does the instrument support data export in CSV format?

Yes. All logged temperature, humidity, and time-series data can be exported as comma-separated values with ISO 8601 timestamps and unit annotations.
How is battery life managed in continuous operation?

With typical usage (50% screen brightness, 10 s measurement interval), the 1000 mAh LiMnO₂ cell delivers >6 hours runtime. Battery status is displayed as percentage and icon; low-power warning triggers at 10%.