Online Particle Size Analyzer

BT-Online1 Online Particle Size Analyzer is an on-line particle size monitorsystem for real-time particle size monitoring and control in powder manufacturing industries. Driven by Standard Operation Procedure (SOP), it automatically samples, measures, recovers and processes data directly from the powder delivery pipeline, providing 24-hour particle size detection and control for a variety of dry powder production lines.

Measurement: Particle size

Particle size range: 0.1 to 1000µm

Dispersion type: Dry

Technology: Laser diffraction


Features and Benefits

Measuring range: 0.1 - 1000 µm

Repeatability: ≤3% (GBRM D50)

Accuracy: ≤3% (GBRM D50)

SOP: Standard Operation Procedure

Detectors: 68 pieces

Test speed: ≤1 min

High-performance semiconductor laser with long lifespan

Automatic Alignment

Automatic Centering


As well as being able to continuously monitor particle size, the system also has a function for real-time feedback and control. The system will collect real-time size data and perform calculations against the particle size control limits. It automatically generates the feedback signal to the control center. This closed loop feedback control system will achieve better quality improvement, higher efficiency, reduce wastage and save energy.

By moving the laser detector center point to the focus point of the lens before each test, the automatic centering function guarantees perfect conditions of the optical system, therefore providing accurate and repeatable testing results.

This function maintains operating parameters at consistent conditions, producing consistent and reproducible measurement across the board for all instruments, old and new.

Sample dispersion is achieved by accelerating the powder through a venturi. The "backflush" and tapered pipe design prevents blockage of the sampling tube, and keeps the residual powder clean, ensuring the accuracy and continuity of real-time testing.

Three different dispersion mechanisms can act upon the sample:

The system has power interruption protection and over-pressured protection functions. Under these abnormal operating conditions, it will initiate an automatic shutdown

sequence to protect the system from harm. The electrical and mechanical system of the BT-online1 has robust interference protections; it is ready for the haphazard nature of a production environment and an electromagnetic interference prone environment.

Using the controlled principle of aerodynamics, we devised the double air-cushion lens protection system. The contamination prevention technology will form an invisible double air shield between the sample stream and the lens, eliminating the optics from contamination from sampling, as well as a dust-prone environment. With this technology, the ultimate goal of a long duration of sustainable operation, providing real-time, continuous particle size monitoring and control can be realized. Accuracy and continuous monitoring of the production data can be achieved.



BT-Online 1

Particle size distribution

Dry powder


Laser diffraction

Analysis theory

Mie and Fraunhofer

Typicalintervalmeasurement time



Number of size classes

88customized grades


≤3% (GBRM D50)


≤3% (GBRM D50)

Resolution ratio

Single peak, double peak, multi-peak

Red light

Lens arrangement

Single lens

Lens design

F-Theta Lenses

Effective focal length



Log-spaced array



Light path adjustment

Intelligent automatic alignment

Dispersion type


Air flowrate



Air filter

21 CFR Part 11


SOP Designer



More than 14 formats report

Auto test


Data export

EXCEL, PDF, WORD, JPG and etc.

Laser class

Class I laser product

Supply voltage



800mm x280mm x280mm (L x W x H)



Computer interface

At least one USB2.0 port required

Operation system

Windows XP, Windows 7,8 or 10

Hardware specification

Intel Core I5, 4GB RAM, 250GB HD

At Bettersize, our mission is to provide best-in-class particle sizing and characterization instruments, comprehensive solutions and exceptional customer services. We provide particle size instrument, particle size analysis of nanoparticles, online particle size analysis, online particle size measurement, particle size analyzer instrumentand etc. Want to know more? Please contact us.


至: Dandong Bettersize Instruments Ltd.
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