High Precision Non-destructive Measurement
The YL72 is an industrial-grade non-contact spectrophotometer with 45/0 optical geometry, designed for hands-free, contamination-free color measurement on liquids, pastes, powders, and delicate surfaces. It features a 7.5mm fixed non-contact distance, Φ8mm measuring aperture, and full-spectrum LED light source (400–700nm).
Key Highlights
Optical Geometry: 45/0(45 circular uniform illumination 0 reception);
Silicon photodiode array (20 groups in two rows)
Non-contact Distance: 7.5mm(±0.15mm)
Ultra-high precision with repeatability ΔE*ab≤0.015 and inter-instrument agreement ΔE*ab≤0.2
Seamless integration into automated production lines
Supports multiple color spaces and illuminants for food, cosmetics, coatings, printing, and automotive industries

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 YL72 Benchtop Spectrophotometers
Colorimeters or spectrophotometers are used to measure liquid color. They measure light coming through or reflecting off the liquid. Readings can be reported as Lab*, RGB, or absorbance units. So that objective color analysis can be used to control quality, or to measure chemical concentration.
Yes, we warmly welcome and sincerely invite you or your team to visit our factory, we will help to arrange hotel and pick up you from airport.
Colorimetry is a method that applies color intensity to ascertain the chemical concentrations. It is founded on Beer-Lambert Law, whereby the absorbance at a given wavelength is proportional to the concentration. It is popular in environmental and biochemical testing.
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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.
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