Linshang LS173 Colorimeter User Manual

1. Product Introduction

The Linshang LS173 is a handheld multifunctional colorimeter featuring a 3.5-inch IPS color display and a capacitive touch panel for an excellent user experience. It integrates multiple color charts, allowing for quick matching of measured colors to the closest color code. The instrument includes a color difference comparison function, enabling users to set color difference thresholds and select various color difference formulas for rapid Quality Control (QC) testing. Additionally, it supports connection to a mobile application (APP) for color measurement and sharing, and is equipped with powerful PC software to meet diverse customer needs.

Standards for the Product

• JJG 595-2002 Colorimeters and Color Difference Meters
• GB/T 3978-2008 Standard illuminants and geometric conditions
• GBT 7921-2008 Uniform color space and color difference formula
• GB/T 11186.1-1989 Methods for measuring the colour of paint films--Part 1: Principles
• GB/T 11186.2-1989 Methods for measuring the colour of paint films--Part 2: Colour measurement
• GB/T 11186.3-1989 Methods for measuring the colour of paint films--Part 3: Calculation of colour differences
• GB/T 39822-2021 Plastics—Determination of yellowness index and change in yellowness index
• GB/T 17749-2008 Methods of whiteness specification
• ASTM E313-98 Standard Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates

2. Parameters

3. Operation

3.1 Instrument Structure

The instrument comprises several key components:

• Type-C Port Charging Port: Located at the top for charging the device.
• Power Button: Situated on the side of the device.
• QR Code: On the back of the device, used for downloading the "LScolor" APP.
• Display Screen: The main interface located on the top surface of the instrument.
• Calibration White Board: A white plate integrated into the base for calibration.
• Test Port: The opening at the front of the device where samples are placed for measurement.
• Bottom Cover: The base of the instrument.

3.2 Calibration

Upon entering the "calibration" interface, users can perform calibration following the on-screen animation or choose to skip it. Calibration is recommended after extended periods of non-use to ensure measurement accuracy.

3.3 Measurement

The instrument defaults to "Lab" as the measurement parameter. Users can access the settings interface by clicking the "Param" button at the top of the screen. From there, they can select the desired parameters for measurement, including various color spaces and formulas such as Lab, LCh, Luv, Yxy, CMYK, RGB, YI-98, WI-98, WI-Gauz, WI-Hunter, WI-R457, HSL, HSV, ITA, and Spectra.

4. Color Difference Compare and Settings

The interface allows for detailed color comparison and configuration:

• Color Format Setting: Users can select from a list of color spaces (e.g., CIE_Lab, CIE_LCh, Yxy, CMYK, RGB, YI-98, WI-98, WI-Gauz, WI-Hunter, WI-R457, HSL, HSV, ITA, Spectra) using radio buttons.
• Standard Color Data: Displays the color values (L*, a*, b*) of the standard sample.
• Sample Color Data: Displays the color values (L*, a*, b*) of the measured sample.
• Color Data Deviation: Shows the difference (Δ) between the standard and sample color values for L*, a*, and b*.
• Color Bias Alert: Provides textual feedback on color bias (e.g., "Normal Slight Green Normal").
• Total Color Difference (ΔE): Displays the calculated total color difference, such as ΔE*ab.
• Pass Status: Indicates whether the measurement passes or fails based on the set threshold (e.g., "ΔE*ab = 0.41 PASS").
• Fail Status: Shows failure information if the measurement exceeds the threshold (e.g., "ΔE*ab = 3.51 NG").
• Scan Buttons: Includes options like "Scan Standard", "Scan Sample", "Color Scan", and "Color Compare".
• Input Standard: Allows manual input of L*, a*, b* values using an on-screen numeric keypad, with "OK" and "Cancel" options.
• Standard History: A list displaying previously saved color standards with their respective measured values.
• ΔE Setup: Enables users to set the ΔE Threshold (e.g., 0.1-50) and select preferred color difference formulas (ΔE*ab, ΔE*uv, ΔE*94, ΔE*cmc(2:1), ΔE*cmc(1:1), ΔE*cmc(1.4:1), ΔE*00) via radio buttons.

5. Color Measurement and Settings

The device offers a user-friendly interface for color measurement and management:

• Menu Navigation: Access various functions via a menu including Language, Calibration, Auto Off Setting, Reset, and Power Off.
• Color Chart Selection: Users can select from predefined color charts like LSPANT C 2022, LSPANT U 2022, LSNCS S 2022, and LSRAL K7 2023, or manage "My Color Chart".
• Measured Color Data: Displays detailed color measurements for specific samples (e.g., LS 016 C, LS 1585 C, LS 165 C) with their Lab values and ΔE.
• Matched Color Code: Shows the closest matched color code from the selected chart.
• Action Buttons: "Color Scan" and "Color Compare" are available for further analysis.

6. Bluetooth Connection

The instrument is equipped with a Bluetooth module for wireless connectivity to a mobile phone APP:

1. Scan the QR code on the instrument body to download and install the corresponding "LScolor" APP.
2. Open the APP, search for the device, and establish a connection as prompted.

7. PC Software

Connect the colorimeter to a computer via USB to utilize the dedicated PC software. This software provides functionalities for comparison measurement, reading comparison records, exporting data to Excel, generating statistics on qualified/unqualified numbers, total counts, and creating reports for printing.

8. Precautions

1. If the colorimeter has not been used for a long time, it is recommended to perform calibration before use.
2. Ensure the sample surface is evenly colored and flat for accurate measurements. Uneven or unclean surfaces can affect accuracy.
3. After removing the base, store it in a clean place to prevent contamination of the standard tile.
4. Do not insert any objects into the colorimeter for cleaning, as this can cause damage and affect measurement accuracy and operational safety.
5. Charge the colorimeter promptly when the battery is low.
6. If the device is not used for over 6 months, charge it periodically to prevent battery over-discharge and damage.
7. Annual calibration is recommended. Calibration services are available.
8. Color displayed on the instrument screen is for reference only, due to potential differences in LCD screen color reproduction.
9. Possible reasons for failed calibration:
   • The bottom cap is not closed properly.
   • The standard tile on the bottom cap requires cleaning.
   • The light source intensity has attenuated, requiring factory inspection and repair.

9. Locating Plate

The colorimeter includes a locating plate to ensure precise alignment for specific measurement areas. The plate features concentric circles, with the inner circle indicating the precise measurement area.

[Diagram: A circular white plate labeled "Colorimeter Locating Plate" with concentric circles. An arrow points to the innermost circle, labeled "Measurement Area".]

10. Packing List

11. Service

1. The colorimeter comes with a one-year warranty. For abnormal operation, the entire instrument should be sent to Shenzhen Linshang Technology Co., Ltd. for maintenance.
2. Spare parts and lifelong maintenance services are provided to users.
3. Gauge calibration services are available.
4. Free technical support is offered for the long term.

Manufacturer: Shenzhen Linshang Technology Co., Ltd.

Website: www.linshangtech.com

Service hotline: 086-755-86263411

Email: sales21@linshangtech.com