1. Introduction
The Linshang LS172/LS173/LS175 series are intelligent handheld colorimeters designed for precise color measurement and difference analysis across various industries. These devices feature a 3.5-inch IPS touch screen for convenient operation, built-in electronic color charts, and versatile connectivity options including mobile app (via Bluetooth) and PC software (via USB). They are widely used in applications such as paint and coating, ink printing, packaging, leather fabrics, textiles, plastics, and food industries for efficient and accurate color management.
2. Key Features
- 3.5-inch IPS Color Touch Screen: Provides a user-friendly interface for convenient operation.
- Versatile Illumination Geometries: LS172 and LS175 models use 45°/0° illumination, ideal for printing and packaging. The LS173 model uses D/8° illumination (Specular Component Included - SCI) for broader industry applications.
- Built-in Electronic Color Charts: Integrates standard color charts (RAL, Pantone, NCS) to quickly match measured colors to the closest 3 color codes.
- Color Bias Indication: Offers indications for all three Lab color channels to assist in precise color mixing.
- Multiple Color Spaces and Formulas: Supports CIE Lab, Luv, LCh, Yxy, CMYK, RGB, Hex color spaces and ΔE*ab, ΔE*uv, ΔE*94, ΔE*cmc(2:1), ΔE*cmc(1:1), ΔE*00 color difference formulas to meet diverse industry needs.
- Software Support: Connects to mobile APP (Android, iOS) via Bluetooth and PC software (Windows) via USB for data sharing, import/export, and report printing.
- QC Function: Allows customization of color difference thresholds for efficient batch detection with pass/fail indications.
- High Precision: Guaranteed repeatability with a standard deviation of ΔE*ab ≤ 0.03.
- CE Certified: Ensures compliance with authoritative metrology institute standards.
3. Package Contents
Upon opening the package, please verify that all items listed below are present and in good condition:
- Colorimeter (x1)
- Locating plate (x1)
- USB data cable (Type-C) (x1)
- Non Dust Cloth (x1)
- User Manual (x1)
- Warranty Card (x1)
- Calibration Report (x1)
- Carrying case (x1)
4. Setup
4.1 Charging the Device
Before initial use, fully charge the colorimeter using the provided USB Type-C cable. Connect the cable to the charging port on the device and a suitable USB power adapter (not included). The battery indicator on the screen will show charging status.
4.2 Powering On/Off
Press and hold the power button (usually located on the side or front) for a few seconds to turn the device on or off.
4.3 Initial Calibration
For accurate measurements, it is crucial to perform a calibration before first use and periodically thereafter. The device typically comes with a white calibration tile. Follow the on-screen instructions to place the colorimeter on the white tile and initiate the calibration process. Ensure the measuring aperture is clean before calibration.
5. Operating Instructions
5.1 Basic Color Measurement
- Ensure the device is calibrated.
- Place the measuring aperture firmly against the surface of the material you wish to measure.
- Tap the 'Scan' button on the touch screen. The device will take a reading within approximately 1 second.
- The screen will display the measured color values (e.g., Lab, Luv, LCh, Yxy, CMYK, RGB, Hex) and automatically match the closest 3 color codes from the built-in electronic color charts (RAL, Pantone, NCS).
5.2 Color Difference Comparison (QC Function)
The QC function allows for quick pass/fail determination based on a set color difference threshold.
- Set Standard: Scan a reference color sample and save it as the 'Standard'. Alternatively, input standard color values manually.
- Set Threshold: Navigate to the 'ΔE Setup' menu to set your desired color difference threshold (e.g., ΔE*ab).
- Scan Sample: Place the colorimeter on the sample to be tested and tap 'Scan Sample'.
- Result: The device will display the color difference (ΔE) between the sample and the standard. If the ΔE value is within the set threshold, it will indicate 'PASS'; otherwise, it will indicate 'FAIL'.
5.3 Color Bias Indication
When performing color difference comparisons, the device provides color bias indications for the Lab color channels (L*, a*, b*). This feature helps users understand the direction of color deviation (e.g., 'Slight red', 'Slight blue') and assists in adjusting color formulations for better matching.
5.4 Illumination Geometry Selection
The LS172 and LS175 models utilize 45°/0° illumination, which is suitable for measuring colors on smooth or textured surfaces where directional reflectance is important. The LS173 model uses D/8° illumination (diffuse illumination with 8° viewing angle), which is ideal for measuring colors regardless of surface texture or gloss, providing a more consistent color appearance.
5.5 Applications
The colorimeter is versatile and can be used across various materials and industries:
- Paint and Coating: Ensuring color consistency in manufacturing.
- Ink Printing: Matching print colors to design specifications.
- Packaging: Maintaining brand color integrity across packaging materials.
- Leather Fabrics: Quality control for color in textiles and leather goods.
- Textiles: Checking dye lots and fabric color uniformity.
- Plastics: Verifying color of plastic components and products.
- Ceramic and Food: Assessing color quality and consistency in these sectors.
Video 1: Demonstration of the LS175 colorimeter, showing its use on textured surfaces, color difference comparison, and color measurement capabilities.
6. Mobile APP and PC Software
The Linshang colorimeter can be connected to a mobile application or PC software to extend its functionality, allowing for advanced data management and analysis.
6.1 Mobile APP Connectivity (Bluetooth)
Download the official Linshang colorimeter app from your device's app store (available for Android and iOS). Enable Bluetooth on your mobile device and within the colorimeter's settings. Pair the devices to access features such as:
- Real-time display of measurement data.
- Creation and management of custom color charts.
- Color sharing and comparison.
- Data storage and export.
6.2 PC Software Connectivity (USB)
Install the dedicated PC software (for Windows) using the provided U disk or by downloading it from the official Linshang website. Connect the colorimeter to your computer using the USB Type-C cable. The PC software offers:
- Comprehensive data analysis and reporting.
- Batch data import and export (e.g., to Excel).
- Advanced color management tools.
- Firmware updates.
7. Specifications
| Feature | Specification |
|---|---|
| Illumination Light Source | Full spectrum LED light source |
| Measurement Conditions | Light source D65, field of view 10° |
| Measuring Time | About 1s |
| Color Spaces | CIE Lab, Luv, LCh, Yxy, CMYK, RGB, Hex |
| Color Difference Formulas | ΔE*ab, ΔE*uv, ΔE*94, ΔE*cmc(2:1), ΔE*cmc(1:1), ΔE*00 |
| Repeatability | Standard deviation ΔE*ab≤0.03 (Average of 30 measurements on white tile at 3s interval after calibration) |
| Dimensions | 86mm X 62.5mm X 158mm |
| Weight | 225g |
| Power Supply | Rechargeable lithium battery 3.7V@700mAh, 10,000 continuous measurements on full charge |
| Data Transmission | USB, Bluetooth |
| Charging Port | USB (Type-C) |
| Operating Temperature | 0~45℃, 0~85%RH (no condensation) |
| Storing Temperature | -25~55℃, 0~85%RH (no condensation) |
| LS172 Illumination Geometry | 45/0 (45° annular illumination, 0° viewing angle) |
| LS172 Measuring Aperture | 8mm |
| LS173 Illumination Geometry | D/8, Specular Component Include (SCI) |
| LS173 Measuring Aperture | 8mm |
| LS175 Illumination Geometry | 45/0 (45° annular illumination, 0° viewing angle) |
| LS175 Measuring Aperture | 20mm |
8. User Tips
- For textured or rough surfaced materials, the LS175 model with its 20mm measuring aperture and 45°/0° illumination is particularly well-suited for accurate colorimetric comparisons.
- The colorimeter is highly versatile and can be used for a wide range of materials including paint, ceramic, plastic, fabric, and coatings.
- Utilize the mobile app or PC software for advanced data logging and analysis, especially when managing multiple color standards or projects.
9. Maintenance
- Cleaning: Use the provided non-dust cloth to gently clean the measuring aperture and the device screen. Avoid using abrasive cleaners or solvents.
- Storage: Store the colorimeter in its carrying case in a dry, cool environment, away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Recharge the device regularly, even if not in active use.
- Calibration: Perform regular calibration as instructed in the manual to ensure measurement accuracy.
10. Troubleshooting
10.1 Inaccurate Readings
- Ensure the device is properly calibrated.
- Check if the measuring aperture is clean and free from dust or debris.
- Verify that the sample surface is flat and the colorimeter is placed firmly against it.
- Ensure the sample is opaque and uniform in color.
10.2 Device Not Powering On
- Check the battery level. Recharge the device if the battery is low.
- Ensure the power button is pressed and held for the required duration.
10.3 Connectivity Issues (Bluetooth/USB)
- For Bluetooth, ensure Bluetooth is enabled on both the colorimeter and your mobile device, and they are within range.
- For USB, ensure the cable is securely connected to both the colorimeter and the PC, and the PC software is correctly installed and running.
- Restart both the colorimeter and the connected device (phone/PC) and try reconnecting.
11. Warranty and Support
The Linshang LS172/LS173/LS175 series colorimeters are manufactured to high-quality standards and come with CE certification, ensuring reliability and performance. For detailed warranty information, please refer to the Warranty Card included in your package. For technical support, service, or inquiries, please contact Linshang Official Store directly. Contact details can typically be found on the official Linshang website or through your purchase platform.
