3nh YL72 Online Non-contact Spectrophotometer adopts nano - spectral technology. It can quickly and non - destructively collect chromaticity data of liquids, pastes, powders, and vulnerable surfaces. Specifically tailored for automated production lines, it supports stable operation without human intervention. It combines high - speed measurement with diverse communication functions and can be flexibly installed on assembly lines and robotic arms. It monitors and transmits data in real - time, accurately enabling efficient quality control.
1. Non-contact measurement
YL72 adopts 45/0 optical structure and 7.5mm non-contact distance to realize non-contact measurement between the test probe and the sample to be measured, and is applied to precise color measurement of special samples such as liquid, paste, powder and fragile surface in automatic production line.
2. High-accuracy survey
The repeatability of YL72 chromaticity value is as high as ΔE*ab≤0.015, and the inter-station difference is controlled at ΔE*ab≤0.2, which ensures the consistency of measurement results of different batches and different equipment and redefines the industry quality standard.
3. High speed measurement
The measurement can be completed in 0.11 seconds at the earliest, supporting instrument triggering or online control triggering, flexibly setting single/multiple average measurement, seamless connection with production line, real-time online monitoring, and remarkable production efficiency.

1. Silicon photodiode array (20 groups in two rows) sensor
Double-row 20-group silicon photodiode array, with large-area design, strong light is unsaturated, low light sensitivity is high, spectral response range covers 400-700nm, 10nm output, reflectivity measurement range is 0-200%, and visible light information is accurately captured.
2. Nano-integrated spectral device
It has the ability of nano-scale light splitting, which can accurately separate light with different wavelengths and effectively guarantee the data accuracy of each band.
3. Full-spectrum long-life LED light source
The lighting source of the instrument covers the full spectrum of 400-700nm, and has sufficient spectral distribution in the visible range, which avoids the spectral loss of white LED and ensures the accuracy of the instrument measurement results. The service life of the light source is as long as 5 years, and it can support more than 3 million measurements.
4. Intelligent automatic calibration
Built-in intelligent automatic calibration function can quickly complete calibration after startup without manual intervention, ensuring long-term stable operation. With magnetic correction bracket, it is easy to operate and reduce human error.

1. Rich & Versatile Interfaces for Multi-Machine Collaborative Measurement
Equipped with USB, RJ45, RS485, RS232 and other mainstream interfaces, it supports multi-machine communication and cooperative work. It can be quickly connected to all kinds of automatic production lines, and a complete distributed color measurement system can be constructed to meet the multi-point color synchronous monitoring of complex production lines.
2. High protection level
IP66 protection level, waterproof and dustproof, and resistant to complex industrial environment.

Provide CIELAB, XYZ, YXY, LCH, CIELUV, Musell, S-RGB, Hunter LAB, β XY, DINLAB 99 color spaces, and a variety of observation light sources A, B, C, D50, D55, D65, D75, F1, F2, F3, F4, F5, F6, F7, F8.F9, F10, F11, F12, CWF, U30, U35, DLF, NBF, TL83, TL84, ID50, ID65, LED-B1, LED-B2, LED-B3, LED-B4, LED-B5, LED-BH1, LED-RGB 1, LED-BH1.

It can be applied to the automatic production line requirements of food and beverage, cosmetics, printing, anodizing, coating, papermaking, automobile spraying line, textile production line, plastic production line and other industries, and can be directly installed on the assembly line or mechanical arm. Real-time monitoring of product color, synchronous transmission of data, providing immediate feedback for product quality.

YL72 series 45/0 Non-Contact Spectrophotometer | |
Product Model | YL72 |
Optical Geometry |
45/0(45 circular uniform illumination 0 reception); |
Features | The non-contact test between the test probe and the sample to be tested realizes the non-contact precise color measurement of liquid, paste, powder and fragile surface. It is mainly used in accurate color measurement and quality control of automatic production line; The measurement time can be as fast as 0.11 seconds. It can communicate with other systems through 485 or USB, and is equipped with upper computer software. |
Light Source | Full spectrum LED light source |
Splitting Mode | Nano-integrated spectral device |
Sensor | Silicon photodiode array (20 groups in two rows) |
Wavelength Range | 400~700nm, 10nm output |
Display Accuracy | 0.01 |
Reflectivity Resolution | 0.01% |
Reflectance Range | 0~200% |
Measuring Aperture | Φ8mm |
Non-contact Distance | 7.5mm(±0.15mm) |
Sample Height | The thickness is not limited, and only the test probe is used. |
Measurement and Observation Mode | Visual |
Measuring Time Interval | 1S |
Measurement Mode | Instrument trigger or online control trigger |
Color Space | CIE LAB,XYZ,Yxy,LCh,CIE LUV,Musell,s-RGB,HunterLab,βxy,DIN Lab99 |
Color Difference Formula | ΔE*ab,ΔE*94,ΔE*cmc(2:1),ΔE*cmc(1:1),ΔE*00,ΔE(Hunter),DINΔE99 |
Other Chromaticity Indexes | Spectral reflectance, Wi (ASTM E313, CIE/ISO, AATCC, Hunter, ISO 2470/R457, Taube, Berger, Stensby), Tint (CIE/ISO),YI(ASTM D1925,ASTM 313),Metamerism index MI,Color fastness, color fastness, strength, coverage, blackness (My,dM), color density CMYK. |
Observer Angle | 2°/10° |
Illuminants | A,B,C,D50, D55,D65,D75,F1 ,F2,F3,F4,F5 ,F6,F7,F8, F9,,F10,F11,F12, CWF,U30,U35,DLF, NBF,TL83,TL84, ID50,ID65,LED-B1 ,LED-B2,LED-B3,LED-B4 ,LED-B5,LED-BH1,LED-RGB1, LED-V1,LED-V2 |
Displayed data | Data, sample chromaticity value, color difference value/graph, color simulation, qualified/unqualified results, display tolerance can be set. |
Measuring Time | The fastest time is 0.11 seconds (about 0.2 seconds) |
Calibrate | Intelligent automatic calibration |
Waterproof Grade | IP66 |
Repeatability | In the optimal test mode (when the single measurement time is 1.0 seconds): Chromaticity value: within ΔE*ab 0.015 (after preheating, measure the average value of the whiteboard for 30 times at intervals of 5s). |
Inter-station Difference | Within ΔE*ab 0.2 (average value of 12 color swatches of BCRA series Ⅱ) |
Accuracy Assurance | Ensure that the first-level measurement is qualified |
Measurement Method | Single measurement, average measurement (2~99 times) |
Dimension | 100*100*140mm |
Weight | About 1400g |
Power Supply | DC 24V,3A power adapter supplies power. |
Illuminant Life Span | More than 3 million measurements in 5 years |
Display | TFT true color 3.5inch |
Interface | USB, RS485, RS232, Ethernet, external trigger, analog signal output. |
Language | Simplified Chinese, traditional Chinese, English |
Operating Environment | 0~40℃, 0~85%RH (no condensation), altitude: below 2000m m |
Storage Environment | -20~50℃, 0~85%RH (no condensation) |
Standard Accessory | Power adapter, manual, USB cable, RJ45 network cable, RS485 multi-computer communication cable, RS232 communication cable, standard calibration board and black calibration box. |
Note: | It is subject to change without prior notice. |
FAQs About Benchtop Spectrophotometers
Who are we? Threenh Technology: 22-Year Professional Color Measurement Solution Provider
Threenh Technology is a Chinese professional Measurement Instrument manufacturer with 22 years of industry experience, specializing in the field of color measurement and surface gloss detection. Integrating research and development, design, production, marketing, and sales, the company takes technological innovation as its core and is committed to providing global customers with high-precision and intelligent testing instruments as well as professional solutions.
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.
The machine used to measure color is primarily called a colorimeter or spectrophotometer.
Spectrophotometer: The most common and precise type. It analyzes light reflected/transmitted by an object across the visible spectrum to quantify color accurately. A spectrophotometer can measure colors on smooth or matte surfaces, as well as textured, glossy, mirror-like surfaces, and special effect colors. It measures the reflected light of a sample at a fixed angle (e.g., 45˚) or captures light reflected at all angles to calculate color measurements that closely match what the human eye perceives. Additionally, similar to how humans flip a sample to view colors from different angles, a spectrophotometer is suitable for measuring a variety of materials and surface characteristics. Widely used in industries like paint, textiles, plastics, Chemicals, Pharmaceuticals, and printing.
Colorimeter: Also called photoelectric integrating colorimeter, a simpler, more cost-effective option. It measures color based on three primary colors (RGB) and is suitable for basic color matching needs. A photoelectric integrating colorimeter is a color measurement device based on the photoelectric integration principle. It directly measures the tristimulus values XYZ of an object's color using three color filters (red, green, blue) and silicon photocells as three sensors. The color measurement principle of this instrument imitates the human eye's mechanism of perceiving the three primary colors (red, green, blue). It corrects the relative spectral sensitivity of the detector through color filters to match the CIE-recommended spectral tristimulus value functions x(λ), y(λ), and z(λ).
Spectrocolorimeter: Combines the functions of spectrophotometers and colorimeters, offering both spectral data and color space values for comprehensive analysis.
For professional paint matching (decorative, automotive, industrial, metallic/pearlescent), these are the top-performing spectrophotometers from 3nh — optimized for formulation, batch consistency, metamerism control, and field/shop matching:
d/8° sphere, SCI/SCE, UV control (360–780nm)
ΔE*ab ≤ 0.015, IIA ≤ 0.2 — ultra-precise for R&D
Multi-apertures (Φ4/8/15/25.4mm)
Transmission + reflection modes
Best for: Paint lab formulation, fluorescent pigments, color standardization
d/8° (SCI/SCE), ΔE*ab ≤ 0.02
Large Φ20mm aperture — averages texture/sheen
Fast, handheld, rugged
Best for: Paint store counters, job-site matching, production QC
8-angle measurement (15°/25°/45°/75°/110° + others)Threenh
For flip-flop, sparkle, pearlescent, metallic coatings
High stability for special-effect finishes
Best for: Automotive paint, powder coatings, metallic pigments, High-end industrial coatings, automotive OEM
d/8°, SCI/SCE, UV adjustable
Interchangeable apertures (Φ4/8mm)
Bluetooth + USB
Best for: General paint store matching, routine QC
Lab formulation / R&D: 3nh YS6060
Portable on-site / paint store: 3nh TS7700
Metallic / pearlescent paint: 3nh MS3008
Entry-level portable: 3nh YS3010
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.
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