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PS301 Sectrophotometer

PS301 Sectrophotometer Instructions Operating Manual PS301 Sectrophotometer PDF
This PS301 Sectrophotometer Instrument are Certified with
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1 Years Warranty (Additional support period of 3 years)

The 3nh PS301 spectrophotometer is a high-precision colorimeter specially designed for micro-aperture precision measurement and automated production line integration. It utilizes a 1mm micro-aperture diameter, enabling accurate color measurement of extremely small areas and minute color blocks. The instrument integrates multiple electronic color charts, allowing for rapid matching from physical samples to industry-standard color chart numbers, thus improving color matching and quality inspection efficiency.

The PS301 spectrophotometer features a dual-purpose design, supporting both unit and probe measurements, or probe-only measurements, flexibly adapting to both manual and automated scenarios. It employs a dual-channel silicon photodiode array sensor and nano-integrated spectral devices , ensuring fast and stable measurements. Supporting RS485/USB communication and multi-unit collaboration , and with accompanying software, it can be integrated into production lines and robotic arms, providing real-time color data monitoring and synchronous data transmission, offering efficient quality control solutions for various industries.

I. Precise Measurement: Micro-orifice Design, Authoritative Data

1. Equipped with a 1mm ultra-small aperture :Designed specifically for color difference detection of extremely small objects, tiny areas, narrow edges, and miniature samples, accurately capturing detailed color information.

2. High-precision spectroscopic technology: Adopting nano-spectroscopy technology and dual-channel silicon photodiode array (18 groups in two columns), the repeatability ΔE*ab≤0.03 and the inter-station difference ΔE*ab≤0.4 ensure the repeatability and consistency of measurement data.

3. International standard optical structure :D/8 SCI illumination method, conforming to multiple international standards such as CIE, ISO, ASTM, and DIN.

4. Authoritative metrological certification : The factory guarantees metrological compliance, and the data is traceable.

I. Precise Measurement: Micro-orifice Design, Authoritative Data


II. Strong Industrial Integration: Quality Control of Automated Production Lines

1. Dual-purpose and flexible deployment:The whole machine is suitable for manual measurement, while the probe mode can be independently connected to automated equipment to realize online color measurement on the production line.

2. RS485 / USB Communication: Supports multiple industrial communication protocols, and comes standard with an RS485 adapter for easy multi-device networking and collaboration.

3. Upper computer software support :Provides professional quality management software that supports real-time data transmission, storage, and analysis, facilitating traceability and report generation.

Strong Industrial Integration


III. Easy to use: Intelligent interaction, quick and easy to learn

1. Intuitive interface : 3.5-inch TFT true color capacitive touch screen, simple to operate, no complicated training required.

2. Contact whiteboard calibration + auxiliary positioning lines :Simplify calibration and positioning processes and reduce human error.

3. Multi-system compatibility : Supports Android, iOS, Windows, HarmonyOS, and WeChat Mini Programs, enabling cross-device data synchronization.

Easy to use


IV. Wide measurement range: adaptable to complex scenarios in multiple industries

1. Advantages of micro-orifice measurement: The 1mm micro-orifice diameter is suitable for color difference quality control and automated quality control of extremely small parts in industries such as plastics and electronics, paints and inks, textiles and clothing printing and dyeing, printing, and ceramics.

2. Multiple Colorimetric Indicators: Supports spectral reflectance, whiteness/yellowness (multiple standards), metamerism index (MI), and color density (CMYK) to meet the professional needs of industries such as printing, textiles, and plastics.

3. Multiple color spaces and observation light sources: Supports color spaces such as CIE LAB, XYZ, LCh, and s-RGB, as well as multiple observation light sources such as D65, A, and D50, adapting to different industry standards.

Wide measurement range


V. Strong Application Expansion: Automated Collaboration + Data Management

1. Multi-device collaboration: Supports simultaneous access of multiple devices, unified control and data aggregation, and adapts to multi-point detection in pipelines.

2. Data Synchronization and Traceability: The host computer software supports data storage, comparative analysis, and report export, facilitating quality traceability and process optimization.

3. Flexible integration: Provides standard communication interfaces such as USB, RS485, RS232, and Ethernet, supports external expansion and secondary development, and is easy to integrate into robotic arms to adapt to industrial systems.

Strong Application Expansion


VI. Intelligent Matching: Built-in electronic color card for quick search of standard color codes.

1. Built-in multiple color cards: The instrument integrates multiple industry-standard electronic color cards, eliminating the need to consult physical color card books.

2. Rapid matching of physical objects : After measuring the color of the physical object, the instrument automatically matches the closest standard color card number, quickly completing color matching and confirmation.

3. Improve work efficiency :Applicable to scenarios such as color matching, incoming material inspection, and color number confirmation, reducing manual comparison errors and accelerating the workflow.

Intelligent Matching


Product Model PS301 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, ISO 7724-1, ASTM E1164, DIN 5033 Teil 7
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, 18 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
Color difference formula ΔE*ab
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, color density CMYK
Observer's perspective 2°/10°
Observation light source D65,A,D50
show /
Measurement time Approximately 1 second
Repeatability Chromaticity value: Standard deviation ΔE*ab within 0.03 (average value of 30 measurements on a white board at 5-second intervals after preheating and correction). Spectrophotometric reflectance: MAV/SCI, standard deviation within 0.1% (400~700nm: within 0.2%).
Inter-platform difference ΔE*ab within 0.4 (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 cycles in 9 hours.
Lifespan of lighting sources More than 3 million measurements in 10 years
Display screen 3.5-inch TFT true color capacitive touchscreen
interface USB, Bluetooth, RS485 (probe)
Store data 500 standard samples, 10,000 test samples, massive storage via APP/PC
Software support Android, iOS, Windows, WeChat Mini Programs, HarmonyOS
language Simplified Chinese, English, Traditional Chinese, Russian
Operating temperature range 0~40℃, 0~85%RH (non-condensing), altitude: below 2000m
Storage temperature range -20~50℃, 0~85%RH (non-condensing)
Accuracy Guarantee Ensure measurement compliance
Standard Annex Power adapter, data cable, instruction manual, quality management software (downloadable from the official website), white calibration box, positioning plate, Bluetooth adapter, RS485 adapter
Optional accessories Mini printer
Note: Subject to change without notice.



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FAQs About  Portable Spectrophotometers

The Ideal Accurate and User - Friendly Spectrophotometer for Your Needs 

This Spectrophotometer device measures the reflectivity，absorbance, transmittance, and fluorescence of light passing through samples, providing invaluable data for a wide range of applications, provide unrivaled accuracy for reliable results. 

Selecting an appropriate spectrophotometer offers significant advantages for precision color analysis and quality control. When choosing an accurate and user - friendly spectrophotometer, consider factors such as wavelength range, sensitivity, sample handling options, and available software features. By investing in the right spectrophotometer, you can streamline your analytical processes, obtain more accurate results, and enhance the overall efficiency of your laboratory or industrial operations. 

 Choosing the right model—whether portable, benchtop, or inline—aligns technology with specific industry needs, ensuring long-term reliability and optimized color management.

Yes, we offer free samples for test, you are welcome to order samples to experience our excellent quality and service.

A colorimeter is sufficient for basic, routine color checks, while a spectrophotometer is needed for precise, comprehensive color analysis—here’s the clear breakdown:

When a Colorimeter is Sufficient

  1. Simple color matching needs: Ideal for checking if a sample matches a predefined standard (e.g., basic paint batches, plastic parts with solid colors).

  2. Consistent lighting conditions: Works well when measurements are done under fixed, standard light sources (no need to account for varied light effects).

  3. Cost-sensitive, high-volume tasks: Perfect for production lines requiring fast, low-cost color checks without advanced data analysis.

When to Use a Spectrophotometer

  1. Precise color quantification: Necessary for measuring Lab values (lightness, red-green, yellow-blue axes) or detecting subtle color deviations (critical for automotive coatings, high-end textiles).

  2. Complex color analysis: Required for metallic/pearlescent finishes, transparent materials, or samples with gloss/texture variations.

  3. Compliance and documentation: Essential when precise color data (spectral curves) is needed for quality audits, regulatory compliance, or brand color standardization.


To answer this question, you first need to clarify your specific needs: 

  • Is it for simple color quality control (QC)?

  • To coordinate with supply chain color management?

  • To monitor on-line color stability?

  • Do you require computer color matching or production color correction?

  • What is your budget?

  • Systematic supervision and evaluation of color performance in dyed products?

If you aren’t fully clear about your requirements at the initial stage, our color management engineers are ready to communicate with you. We will recommend solutions tailored to your needs. When conditions permit, we can provide prototype demonstrations and trial testing to ensure the instrument meets your practical application requirements.

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. 

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