Solar Panel EL Tester & VI Tester Machine - OPT-M960B / M951B / M950B
Ooitech provides a complete range of high-performance solar panel EL testers and VI (Visual Inspection) testers designed for modern solar module production lines. The OPT-M960B, OPT-M951B, and OPT-M950B series electroluminescence testing machines deliver fast, accurate, and reliable defect detection for solar panels before and after lamination. Equipped with SONY industrial cameras, voltage-stabilized DC power supply, automatic seamless image mosaicing software, and full MES system integration, these EL testers are essential quality control equipment for any solar panel manufacturing facility producing conventional, double-glazed, half-cell, shingled, or film-mounted modules.
Whether you are building a new solar panel production line from 5MW to 1GW or upgrading your existing quality inspection station, Ooitech EL testers ensure every solar module meets the highest standards before leaving your factory.
Three Models to Meet Your Production Needs
Ooitech offers three EL tester models to match different inspection requirements and budgets:
OPT-M960B - EL + VI Dual Inspection, Intel i7 Processor, highest configuration
OPT-M951B - EL Inspection Only, Intel i5 Processor, cost-effective solution
OPT-M950B - EL + VI Dual Inspection, Intel i5 Processor, balanced performance
All three models share the same robust alignment system, four-camera imaging architecture, and MES-compatible software platform, ensuring consistent and dependable testing results across your production line.
Technical Specifications - Model Comparison
| Parameter | OPT-M960B | OPT-M951B | OPT-M950B |
|---|
| Inspection Type | EL + VI | EL Only | EL + VI |
| EL Camera Resolution | 4 x 1,920 x 1,200 x 3W | 4 x 1,920 x 1,200 x 3W | 4 x 1,920 x 1,200 x 3W |
| VI Camera Resolution | 4 x 5,440 x 3,648 x 3W | N/A | 4 x 5,440 x 3,648 x 3W |
| EL Imaging Precision | 0.5 mm/pixel | 0.5 mm/pixel | 0.5 mm/pixel |
| VI Imaging Precision | 0.1 mm/pixel | N/A | 0.1 mm/pixel |
| Camera Brand | SONY Industrial Camera | SONY Industrial Camera | SONY Industrial Camera |
| Exposure Time | 0.5 - 10s (Adjustable) | 0.5 - 10s (Adjustable) | 0.5 - 10s (Adjustable) |
| Imaging Method | Four-camera, three-imaging, auto mosaicing | Four-camera, three-imaging, auto mosaicing | Four-camera, three-imaging, auto mosaicing |
| Processor | Intel i7 | Intel i5 | Intel i5 |
| Operating System | Windows 10 | Windows 10 | Windows 10 |
| Testing Cycle | ≤ 20s | ≤ 20s | ≤ 20s |
| DC Power Supply | DC 60V / 10A x 1 set | DC 60V / 10A x 1 set | DC 60V / 10A x 1 set |
| Overall Dimensions (mm) | 2,800 x 2,260 x 1,925 | 2,800 x 2,260 x 1,415 | 2,800 x 2,260 x 1,300 |
| Power Requirement | AC 220V, 15A | AC 220V, 15A | AC 220V, 15A |
| Air Source | 0.6 - 0.8 MPa | 0.6 - 0.8 MPa | 0.6 - 0.8 MPa |
| Network | Optional | Optional | Optional |
| Operating Temperature | +15 to +40 degrees C | +15 to +40 degrees C | +15 to +40 degrees C |
| Operating Humidity | 10 - 75% | 10 - 75% | 10 - 75% |
| Storage Temperature | +5 to +40 degrees C | +5 to +40 degrees C | +5 to +40 degrees C |
| Storage Humidity | 5 - 85% | 5 - 85% | 5 - 85% |
Module Compatibility
| Module Type | Dimensions Supported |
|---|
| 72-cell Module (156 Poly/Mono) | 2,500 x 1,400 x 40 mm (Frame: 45/35 mm or 46 mm) |
| 60-cell Module | 1,650 x 992 x 40 mm (Frame: 35 mm) |
| Alignment Range | Length: 1,650 - 2,500 mm x Width: 992 - 1,400 mm |
| Compatible Module Types | Conventional, Double-glazed, Film-mounted, Half-cell modules |
| Testing Stage | Universal for before and after lamination |
Technical Advantages
High-Precision SONY Industrial Camera System
All models utilize genuine SONY industrial cameras with EL imaging precision of 0.5 mm/pixel and VI imaging precision of 0.1 mm/pixel (where applicable). The four-camera architecture captures images in three passes with automatic seamless software mosaicing, delivering full-module inspection images with no stitching artifacts.
Rapid Testing Cycle
With a testing cycle of 20 seconds or less, these EL testers keep pace with high-throughput solar panel production lines. The efficient alignment system with three canvas conveyor belts and omni-directional module positioning ensures smooth and continuous operation.
Versatile Power-Up System
The voltage-stabilized DC 60V/10A power supply supports multiple testing scenarios including bus bar power-up before lamination, junction box tooling power-up, and conventional double-glazed module power-up, providing maximum flexibility for different production stages.
Comprehensive Image Processing
The built-in image processing software supports local zooming, barcode display, high and low current testing modes, gain adjustment, gray scale processing, image shearing and rotation. Operators can query inspection records by barcode or date, and customize additional parameters as needed.
Full MES System Integration
All EL and VI images are automatically saved using the module barcode as the filename and uploaded directly to your MES (Manufacturing Execution System). This ensures complete traceability and quality data management for every solar panel produced.
Three Operating Modes
Testing Mode - Normal production line inspection with real-time monitoring and volume production statistics
Assembly Line Mode - Conveyor pass-through without EL testing for flexible line configuration
Commissioning Mode - Individual module control for equipment debugging and maintenance
Automatic Barcode Recognition
The system automatically identifies and reads module barcodes, linking inspection images to specific panel serial numbers for seamless quality tracking throughout the production process.
Wide Module Compatibility
The adjustable alignment system accommodates modules from 60-cell to 72-cell configurations, supporting lengths from 1,650 mm to 2,500 mm and widths from 992 mm to 1,400 mm. Compatible with conventional, double-glazed, film-mounted, and half-cell solar modules.
Applications
Solar Panel Production Line Quality Control
The OPT-M960B, M951B, and M950B EL testers serve as critical quality inspection stations in solar panel manufacturing lines ranging from 5MW to 1GW capacity. They detect micro-cracks, broken cells, soldering defects, and other invisible flaws through electroluminescence imaging.
Pre-Lamination Inspection
Perform EL testing on solar modules before the lamination process to identify and remove defective panels early, reducing material waste and improving overall production yield.
Post-Lamination Inspection
Conduct final EL and VI testing after lamination to ensure finished solar panels meet quality standards before packaging and shipment. The dual-purpose design supports both pre- and post-lamination testing on a single machine.
Visual Inspection (VI) for Surface Defects
Models OPT-M960B and OPT-M950B include dedicated VI cameras with 0.1 mm/pixel precision for detecting surface defects, scratches, contamination, and cosmetic issues that are not visible through EL testing alone.
MES Data Integration for Smart Manufacturing
Integrate EL and VI inspection data directly into your factory MES system for real-time quality monitoring, statistical process control, and full production traceability - essential for modern smart solar panel manufacturing.
Compatible Solar Module Technologies
These EL testers are suitable for inspecting solar panels based on various cell technologies including PERC, TOPCon, IBC, ABC, HPBC, MBB, shingled, half-cell, and double-glazed module designs. The flexible testing platform adapts to M6, M10, and M12 wafer format modules.
Contact Ooitech - Get a Quote for Your EL Tester
Ooitech is a professional supplier of solar panel production line equipment, providing complete solutions from 5MW to 1GW including equipment design, delivery, installation, operator training, raw material supply, and after-sales service. Our product range covers the entire solar module manufacturing process: laser cutting machines, tabber stringers, layup machines, busing machines, EL testers, laminators, framing machines, glue dispensing machines, IV testers, sun simulators, glass loading machines, EVA/TPT cutting machines, and more.
To learn more about our EL tester machines or request a quotation for your solar panel production line, please contact us through any of the following channels:
Email: [email protected]
Phone: +86 18571646990
WhatsApp: +86 15961592660
Head Office: Wuhan Yangtze River Center, Wuhan, China
Website: www.ooitech.com
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