The PS401 features a dual-purpose design: it can be used as a single unit ("main unit + probe") for handheld measurement needs, or the probe can be used independently for flexible integration into industrial automation equipment. Equipped with USB, Bluetooth, and RS485 and other mainstream industrial interfaces, it supports multi-device communication and collaborative work, allowing for rapid integration into various automated production lines to build distributed color measurement systems and meet the needs of multi-point synchronous color monitoring on complex production lines. It is widely used for color difference quality control in industries such as plastics and electronics, paints and inks, textiles and apparel printing and dyeing, printing, and ceramics.
Handheld + probe dual-use design: It can be operated as a whole to meet the sampling needs of the laboratory or the field; or the probe can be used alone and integrated into automated equipment to adapt to different working scenarios.
Micro-orifice measurement capability: The measuring aperture is only 1mm, making it suitable for precise colorimetric measurement of small samples, fine areas, curved surfaces, or narrow spaces.
Lightweight design: The main unit weighs only 250g, and the probe (including the calibration box) weighs 240g. Its compact size makes it easy to hold or embed in a device.

Built-in electronic color card library: The device has a pre-installed standard electronic color card, so there is no need to carry a physical color card booklet, which can quickly compare the target color with the standard color sample.
One-click matching and filtering: After measuring the sample, the instrument can automatically identify the closest electronic color card number and color difference data, helping users quickly determine the color assignment and degree of deviation.
Highly efficient quality control: In the processes of incoming material inspection, production batch comparison, and finished product sampling inspection in industries such as plastics and electronics, paints and inks, and textile printing and dyeing, the efficiency of color determination is greatly improved and human error is reduced.
Scalability: Supports user-defined import or update of electronic color card libraries, meeting the digital management and application needs of enterprises' own standard color libraries.

Multiple interface support: Equipped with multiple interfaces such as USB, Bluetooth, RS485 (probe end), RS232, and RJ45, it is convenient to connect with PLC, computers, printers, industrial controllers and other devices to achieve high-speed data transmission and system integration.
Multi-device communication and collaborative work: Supports networking of multiple devices, suitable for multi-point color synchronous monitoring in automated production lines, and building a distributed color measurement system.
External triggering and real-time feedback: Supports external triggering measurement, and can work in conjunction with production line sensors, robotic arms, etc. to achieve automated and synchronized data acquisition, facilitating closed-loop control.

Optical core: It adopts dual-channel silicon photodiode array sensors (32 groups in two rows) and nano-integrated spectral devices, with a wavelength range of 400-700nm, a wavelength interval of 10nm, and high spectral accuracy.
Good repeatability: standard deviation of chromaticity value ΔE*ab ≤ 0.02 (30 measurements at 5s intervals after whiteboard calibration), standard deviation of spectrophotometric reflectance ≤ 0.1% (≤ 0.2% in the range of 400-700nm).
Small inter-device difference: ΔE*ab ≤0.3 (average value of 12 color plates in BCRA series II), ensuring data consistency among multiple devices.
High display accuracy: 0.01%, reflectance resolution 0.01%, reflectance measurement range 0-200%, meeting high-precision quality control requirements.

Rich colorimetric indicators: Supports multiple color spaces such as CIE LAB, XYZ, Yxy, LCh, CIE LUV, s-RGB, HunterLab, βxy, DIN Lab99, etc.; covers multiple color difference formulas such as ΔEab, ΔE94, ΔEcmc, ΔE00, DINΔE99, etc.
Diverse colorimetric indicators: including spectral reflectance, whiteness (ASTM E313, CIE/ISO, ISO2470/R457, etc.), yellowness (ASTM D1925, ASTM 313), metamerism index (MI), staining/color change fastness, strength, opacity, 555 hue classification, Munsell (C/2), blackness (My, dM), color density (CMYK), tint, etc.
Multiple light sources and observer angles: Supports 32 types of observation light sources, including D65, A, B, C, D50, F series, and LED series, with selectable 2°/10° observer angles, conforming to international standards.
Comprehensive software ecosystem: Supports multiple platforms including Android, iOS, Windows, WeChat Mini Programs, and HarmonyOS, and provides quality management software (downloadable from the official website) to enable data storage, analysis, export, and traceability.

Long-lasting light source: Combined full-spectrum LED light source with a lifespan of up to 10 years or more than 3 million measurements, reducing maintenance costs.
High-capacity battery: 3200mAh lithium battery, which can support about 9 hours or 15,000 measurements on a single charge, meeting the needs of long-term operation.
Strong environmental adaptability: operating temperature 0~40℃, storage temperature -20~50℃, humidity ≤85%RH (non-condensing), suitable for industrial site environments.
Metrological compliance guarantee: The equipment is guaranteed to be metrologically compliant at the factory, ensuring that the measurement results are traceable and reliable.

The PS401 spectrophotometer is suitable for color difference quality control in industries such as plastics and electronics, paints and inks, textiles and apparel printing and dyeing, printing, ceramics, food packaging, cosmetics, and automotive parts. Its 1mm micro-aperture diameter is ideal for color control of extremely small samples, precision injection molded parts, screen-printed patterns, wires, and minute areas. Its dual-purpose design and rich interfaces enable it to deliver efficient, accurate, and stable color measurement capabilities in automated production lines, robotic arm integration, laboratory testing, and mobile inspection scenarios.

Product Model | PS401 Spectrophotometer |
Lighting Method | D/8 (diffuse illumination, 8° direction reception), SCI (including specular reflection), conforming to standards CIE No.15, GB/T 3978, GB 2893, GB/T 18833, ISO7724-1, ASTM E1164, DIN5033 Teil7 |
Characteristic | Employing a dual-channel silicon photodiode array sensor with a built-in electronic color card. It is used for color difference quality control in industries such as plastics and electronics, paints and inks, textiles and apparel printing and dyeing, printing, and ceramics. |
Lighting Source | Combined full-spectrum LED light source |
Integrating Sphere Size | Φ20mm |
Spectrophotometry | Nanoscale integrated spectral devices |
Sensors | Silicon photodiode array (dual-row, 32 groups) |
Measurement Wavelength Range | 400-700nm |
Wavelength Spacing | 10nm |
Measuring Diameter | 1mm |
Light-containing Methods | SCI |
Color Space | CIE LAB, XYZ, Yxy, LCh, CIE LUV, s-RGB, HunterLab, βxy, DIN Lab99 |
Color Difference Formula | ΔE*ab, ΔE*uv, ΔE*94, ΔE*cmc(2:1), ΔE*cmc(1:1), ΔE*00, DINΔE99, ΔE(Hunter) |
Other Colorimetric Indicators | Spectral reflectance, WI (ASTM E313, CIE/ISO, ISO2470/R457, AATCC, Hunter, Taube, Berger, Stensby), YI (ASTM D1925, ASTM 313), metamerism index MI, staining fastness, color change fastness, strength, opacity, 555 hue classification, Munsell (C/2), blackness (My, dM), color density CMYK, Tint |
Observer's Perspective | 2°/10° |
Observation Light Source | D65, A, B, C, D50, D55, D75, F1, F2(CWF), F3, F4, F5, F6, F7(DLF), F8, F9, F10(TPL5), F11(TL84), F12(TL83/U30), U35, NBF, ID50, ID65, LED-B1, LED-B2, LED-B3, LED-B4, LED-B5, LED-BH1, LED-RGB1, LED-V1, LED-V2 |
Display | Spectral graph/data, sample chromaticity value, color difference value/graph, pass/fail results, color simulation, color deviation |
Measurement Time | Approximately 1s |
Repeatability |
Chromaticity value: Standard deviation ΔE*ab within 0.02 (after preheating and calibration, average value of 30 measurements on a white board at 5-second intervals) |
Inter-platform Difference | ΔE*ab within 0.3 (average value measured from 12 color swatches of BCRA Series II) |
Display Accuracy | 0.01 |
Reflectivity Measurement Range | 0-200% |
Reflectivity Resolution | 0.01% |
Measurement Method | Single measurement, average measurement (2~99 times) |
Positioning Method | Auxiliary positioning lines |
Whiteboard Verification Method | Contact whiteboard verification |
Size | Main unit: 80*132*20; Probe: φ43*73.5 |
Weight | Main unit: 250g; Probe (including calibration box): 240g |
Battery Power | Lithium battery, 3.7V, 3200mAh, 15,000 measurements within 9 hours |
Lighting Source Lifespan | 10 years, more than 3 million measurements |
Display Screen | TFT true color 3.5inch, capacitive touch screen |
Interface | USB, Bluetooth, RS485 (probe) |
Data Storage | Standards: 500, Samples: 10,000, APP/PC massive storage |
Software Support | Android, iOS, Windows, WeChat Mini Programs, HarmonyOS |
FAQs About Portable Spectrophotometers
A spectrophotometer and colorimeter are certain instruments used by scientists to measure color by quantifying reflected or transmitted light. The results are presented in color spaces, such as L*a*b*, RGB, or XYZ. This enables the accuracy of comparison and tracking of the changes in color in chemical or material research.
Inquiry - quotation - communication - order confirming - deposit payment - production - testing and debugging - balance payment - packing - delivery - customer receiving - after service.
D/8°and 45°/0°are two kinds of illumination geometry with different optical geometry design. D/8°illumination geometry is more widely used for the color comparison and measurement of high-gloss materials; 45°/0°illumination geometry is mainly used in printing and packaging industries.
For premier ink quality control (CMYK, spot colors, printing density, formulation & press-side QC), these 3nh spectrophotometers / spectrodensitometers stand above the rest:
45/0 ring illumination, ISO 5-4 / ISO 13655 (M0/M1/M2/M3)
Measures density (Status T/E/A/I), dot gain, trap, print contrast
ΔE*ab ≤ 0.03, density ≤ 0.01D
Small apertures (Φ2/4/8mm) for fine print & ink dots
Ideal: packaging, label, gravure, flexo, CMYK/spot color control
d/8° sphere, SCI/SCE, UV control
ΔE*ab ≤ 0.01 (repeatability), IIA ≤ 0.1
Multi-apertures (Φ3/8/15/25mm)
Best for: R&D, ink formulation, batch consistency, fluorescent inks
d/8° (SCI/SCE), ΔE*ab ≤ 0.02
Fast, handheld, large Φ20mm aperture
Best for: press-side checks, warehouse incoming ink, on-site matching
360–780nm, UV adjustable, dual CMOS
Reflection & transmission modes
Multi-aperture (Φ4/8/15/25.4mm)
Best for: high-precision lab R&D, transparent/fluorescent inks
Best press-side / print QC: YD5050
Top lab formulation: TS8560
Best portable production: TS7700
High-end lab R&D: YS6060
Always a pre-production sample before mass production; Always final Inspection before shipment;
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