AMT539 Series Spectral Colorimeter: AMT539A vs AMT539C

Spectral Colorimeter

AMT539 Series Spectral Colorimeter

Keywords: spectrophotometer colorimeter, spectral colorimeter, amt539 colorimeter, amt539a colorimeter, amt539c colorimeter, lab color measurement, portable colorimeter

One series, three models — compare repeatability, illumination, camera and connectivity to pick the right AMT539 for your lab.

The AMT539 series spectral colorimeter delivers laboratory-grade color measurement with ultra-high repeatability and excellent inter-instrument agreement. Built around a 40 mm integrating sphere and a dual 16-group silicon photodiode sensor, it supports CIE-Lab, LCh, Hunter Lab, XYZ and a full range of color-difference and whiteness / yellowness indices. The series covers three models — AMT539, AMT539A and AMT539C — so you can match performance and budget to your workflow.

A 3.5-inch full-color screen, built-in HD camera (selected models), and Android / iOS app support make it easy to observe, capture, and manage measurements on site or in the lab.

Key Features

1.  Ultra-high Repeatability — dE*ab ≤ 0.02–0.04 (model dependent, see comparison below).

2.  Illumination — LED light source; AMT539 / AMT539C add UV for stable spectral measurement.

3.  Measuring Aperture — Up to 3 apertures (Φ8/Φ11mm, Φ4/Φ6mm, Φ6/1×3mm); AMT539A uses a single Φ8/Φ11mm aperture.

4.  Camera Observation — Built-in HD camera on AMT539 / AMT539C for clear viewing of the measured area.

5.  Mobile APP — Android / iOS app on AMT539 / AMT539C for on-the-go measurement and data management.

6.  Software — Windows colour management system; AMT539 / AMT539C also support Android / iOS.

7.  Integrating Sphere — 40 mm integrating sphere with nano-integrated spectral devices.

8.  Connectivity — USB on all models; Bluetooth on AMT539 / AMT539C.

Model Comparison

The three models share the same 40 mm sphere, sensor and software platform, but differ in repeatability, illumination, camera and connectivity. The table below highlights every difference.

Parameter	AMT539	AMT539A	AMT539C
Test condition	SCI + SCE	SCI	SCI + SCE
Repeatability (dE*ab)	≤ 0.03	≤ 0.04	≤ 0.02
Inter-instrument Agreement	≤ 0.3	≤ 0.4	≤ 0.2
Test Aperture	3pcs Φ8/Φ11mm, Φ4/Φ6mm, Φ6/1×3mm	1pc Φ8/Φ11mm	3pcs Φ8/Φ11mm, Φ4/Φ6mm, Φ6/1×3mm
Light source	LED + UV	LED	LED + UV
Camera function	Yes	No	Yes
Mobile APP	Yes (Android, iOS)	No	Yes (Android, iOS)
Measuring structure	D/8, SCI/SCE	D/8, SCI	D/8, SCI/SCE
Measurement observation	Camera	Visual	Camera
Software support	Windows, Android, iOS	Windows	Windows, Android, iOS
Interface	USB, Bluetooth	USB	USB, Bluetooth
Storage	Instrument 10,000; APP mass storage	10,000 data items	Instrument 10,000; APP mass storage

Technical Specifications

The following specifications are common to all three models (AMT539 / AMT539A / AMT539C). Model-specific differences are listed in the comparison table above.

Display accuracy	0.01
Color Space & Indices	Reflectance, CIE-Lab, CIE-LCh, Hunter Lab, CIE-Luv, XYZ, Yxy, RGB, Color Difference (dE*ab, dE*cmc, dE*94, dE*00), Whiteness (ASTM E313-00, ASTM E313-73, CIE/ISO, AATCC, Hunter, Taube Berger Stensby), Yellowness (ASTM D1925, ASTM E313-00, ASTM E313-73), Blackness (My,dM), Color Fastness
Source conditions	A, B, C, D50, D55, D65, D75, F1-F12, CWF, U30, U35, DLF, NBF, TL83, TL84, ID50, ID65, LED-B1~B5, BH1, RGB1, V1, V2
Calibration	Auto calibration (zirconium reference, Mohs 9)
Observer	2°, 10°
Integrating Sphere Size	40 mm
Standards	CIE No.15, GB/T 3978, GB 2893, GB/T 18833, ISO7724-1, ASTM E1164, DIN5033 Teil7
Spectral method	Nano-integrated spectral devices
Sensor	Silicon photodiode array dual 16 groups
Wavelength interval	10 nm
Wavelength range	400–700 nm (reflectance at 31 wavelengths)
Reflectance range	0–200%
Reflectance Resolution	0.01%
Measurement method	Single, Average (2–99 measurements)
Measurement Time	About 1 second
Screen	Full color screen, 3.5 inches
Battery	8,000 times continuous tests, 3.7V / 3000mAh
Light Source Lifetime	10 years, 1,000,000 cycles
Language	Chinese, English

How to Use

1.  Calibration — Auto calibration with the zirconium reference (Mohs 9) before each use.

2.  Select Aperture — Choose the appropriate measuring aperture (selected models).

3.  Measure — Place the sample, trigger measurement (~1 s); view result on screen or via camera.

4.  Manage — Save up to 10,000 data items; sync with PC software or mobile APP.

Applications

1.  Laboratory — Laboratory and production color QC.

2.  Paint & Coating — Paint, coating and plastic color control.

3.  Textile — Textile, dyeing and printing color matching.

4.  Food & Chemical — Food, cosmetic and chemical color inspection.

Spare Parts

•  Optional quartz cylindrical cuvette Q-731 for liquid, cream or powder samples: outer size Φ34 × 25 mm (wall 1.5 mm).

•  Optional quartz cylindrical cuvette Q-731: outer size Φ64 × 38.5 mm (OEM for HUNTERLAB USA).

•  Optional quartz cylindrical cuvette Q-731: outer size Φ32 × 41 mm (wall 1.5 mm).