3NH ST700D Array Spectrophotometer

Description

3NH ST700D Array Spectrophotometer

Brand: 3NH-TILO (China)

ST700D Array Spectrophotometer Main Features

• Silicon photodiode array (double 40 array) sensor, accurate and stable measurement.
• Contact automatic whiteboard calibration technology, no need to start each correction;
•  Provide 40+ observation light sources and more than 10 kinds of measurement indicators;
•  Equipped with three larger measuring calibers to meet the sample measurement needs;
•  Passed the authoritative metrological identification;
•  Camera positioning can clearly observe the measured area;
•  Powerful function, support APP color matching, establishment of personal data, cloud storage;
•  Support Android, IOS, Windows, HarmonyOS, wechat mini program, color cloud, etc

Introduction to the 3NH ST-700D Spectrophotometer

• The 3NH ST-700D Spectrophotometer is a high-precision portable color measurement instrument designed for professional color analysis and quality control applications across a wide range of industries. Developed by 3NH Technology, the ST-700D combines advanced spectroscopic technology, intelligent optical design, and user-friendly operation into a compact and durable handheld device. It is widely used in plastics, paints, coatings, textiles, printing, automotive manufacturing, cosmetics, food production, research laboratories, and many other industries where accurate color evaluation is essential.
• The ST-700D is part of 3NH’s advanced portable spectrophotometer series and is recognized for its excellent repeatability, inter-instrument agreement, and compatibility with international color measurement standards. The instrument is engineered to deliver highly stable and reliable measurement data even under challenging industrial environments.
• One of the major strengths of the ST-700D is its adoption of a silicon photodiode array sensor with dual 40-array technology. This advanced sensor structure significantly improves measurement sensitivity and stability. Compared with conventional colorimeters, the ST-700D offers wider spectral response capability, better low-light sensitivity, and stronger resistance to saturation under intense light conditions. As a result, the instrument provides highly accurate color measurements with excellent consistency.
• The instrument utilizes a D/8 optical geometry system with both SCI (Specular Component Included) and SCE (Specular Component Excluded) measurement modes. This optical configuration complies with major international standards including CIE No.15, ISO 7724-1, ASTM E1164, and DIN5033. The D/8 geometry allows the ST-700D to minimize the influence of surface texture and gloss during measurement, ensuring that the true color characteristics of the sample are accurately captured.
• Another remarkable feature of the ST-700D is its full-spectrum balanced LED illumination system combined with UV light sources. Traditional LED systems may suffer from spectral deficiencies in certain wavelength ranges, but the ST-700D provides stable and uniform spectral distribution throughout the visible spectrum from 400 nm to 700 nm. This enables the instrument to measure fluorescent materials accurately while maintaining high color precision.
• The ST-700D is equipped with multiple interchangeable apertures, making it suitable for measuring samples of various sizes and surface geometries. The standard configuration includes nine measuring apertures such as 3 mm, 5 mm, 10 mm, 11 mm, and 1×3 mm configurations. This versatility allows the instrument to handle flat surfaces, curved components, small parts, textured materials, and irregularly shaped samples with excellent adaptability.
• In terms of measurement performance, the ST-700D delivers exceptional repeatability and inter-instrument agreement. The repeatability can reach ΔEab ≤ 0.018–0.022, while the inter-instrument error is controlled within ΔEab ≤ 0.2. Such performance ensures that color measurements remain highly consistent between different devices and across different production sites. This capability is especially important for industries requiring strict color quality management and standardized color communication throughout the supply chain.
• The instrument supports a wide variety of color spaces and color difference formulas, including CIE LAB, XYZ, Yxy, LCh, HunterLab, s-RGB, DIN Lab99, and Munsell systems. Additionally, it provides multiple color difference calculations such as ΔEab, ΔE94, ΔE00, ΔEcmc, and DINΔE99. This comprehensive functionality enables users to select the most appropriate evaluation method according to their specific industrial standards and application requirements.

The ST-700D also offers numerous advanced color indices and analytical functions, including whiteness index, yellowness index, color fastness evaluation, color strength analysis, opacity testing, color density, and metamerism index analysis. These capabilities make the instrument suitable not only for routine color comparison but also for advanced research and laboratory analysis.

One of the most convenient features of the ST-700D is its integrated camera positioning system. The built-in camera allows users to view the measurement area directly on the large touchscreen display, ensuring precise positioning and reducing operator error. This feature significantly improves measurement efficiency, especially when testing small or complex samples.

The spectrophotometer is equipped with a 3.5-inch TFT capacitive touchscreen that provides intuitive navigation and clear display of measurement data, spectral graphs, color difference results, pass/fail evaluations, and color simulation information. The ergonomic design of the device ensures comfortable handling during long-term operation, while the thoughtfully positioned measurement buttons accommodate different user habits.

For connectivity and data management, the ST-700D supports USB and Bluetooth 5.0 communication. It is compatible with Android, iOS, Windows, HarmonyOS, and WeChat Mini Program platforms. Users can easily transfer measurement data, generate quality control reports, perform color matching analysis, and store large amounts of data using dedicated software applications. Cloud-based color management solutions further enhance production traceability and collaboration among teams.

The instrument also incorporates intelligent automatic white calibration technology. With its non-contact automatic whiteboard calibration system, the ST-700D can quickly perform calibration procedures while maintaining long-term measurement stability. This reduces manual intervention and improves operational convenience in daily quality control activities.

Battery performance is another advantage of the ST-700D. Equipped with a high-capacity 5000 mAh lithium battery, the instrument can perform approximately 8,500 measurements within eight hours of operation. The LED light source itself has a service life exceeding 1.5 million measurements, ensuring long-term reliability and reduced maintenance costs.

In practical applications, the ST-700D is widely used for incoming material inspection, production quality control, color matching, laboratory analysis, and product development. In the plastics industry, it helps manufacturers maintain consistent color batches for molded products. In the paint and coating industry, it ensures precise color formulation and appearance evaluation. Textile manufacturers rely on the ST-700D for dyeing quality control and color fastness testing. Printing companies use it to achieve accurate color reproduction, while automotive manufacturers apply it for surface coating inspection and component color consistency verification.

Overall, the 3NH ST-700D Spectrophotometer represents a powerful combination of precision, portability, advanced optical technology, and intelligent software integration. Its high accuracy, excellent repeatability, multiple aperture configurations, and broad application versatility make it an ideal solution for professional color measurement and quality assurance applications. With its modern design and comprehensive functionality, the ST-700D continues to be an excellent choice for laboratories, manufacturers, and research institutions seeking reliable and efficient color analysis equipment.

ST-700D Instrument Specifications