Applications:  

It is suitable for the measurement of powders with uniform size distribution (narrow size distribution) and small volume of particles in liquid suspension.  

Resistance (Coulter) Particle Counter  uses the Electrical Sensing Zone method, also called Coulter principle  to measure the particle size .As shown in the figure，the aperture tube  is dipped into the electrolyte. There are two electrodes separated by  the aperture tube, between the electrodes an electric current flows.  Particles are suspended in a weak electrolyte solution while measuring,  as particles pass through the aperture, they displace their own volume  of electrolyte, momentarily increasing the resistance of the aperture.  This change in resistance produces a pulse that is digitally processed  in real time. Analyzing these pulses enables a size distribution to be  acquired and displayed in volume and diameter.  

Features:  

It is of high resolution since it counts  particles one by one and then gives size distribution and quantity of  the particles measured. Its resolution (channel) depends on the  measuring accuracy of the pulse of the electrical system. It especially  suitable to measure: 1) powders with high resolution requirements, or  strict size distribution requirements, such as abrasive micro grits,  copy powders. 2) small volume of particles in liquid suspension.  

Specifications:  

1. Measuring Range：1-256μm  

2. Repeatability：<2%  

3. Measurement Duration：15 seconds  

4. Channels：8192  

Report Items:  

Particle size distribution table &  graph, average diameter, median diameter, standard deviation, relative  deviation, SSA, Particle numbers, etc.  

Features:  

1. Traditional design with the measuring unit, computer and oscillograph separated.  

2. Advance pulse measurement technology, more than 8000 channels.  

3. Replace the traditional mercury  manometer with a pressure sensor, provides more accurate measurement and  control of degree of vacuum, and higher automation.  

4. Proprietary photoelectric liquid level detection technology makes the volume measurement more accurate and reliable.   

5. Auto de-clogging function.  

Software Function:  

1. Four statistical modes:  based on volume, particle , area and particle number.  

2. Two accumulative directions：small to large, large to small.  

3. Two languages: English, Chinese.  

4. Report items can be set/selected according to customers’ requirements.  

5. Data can be replicated.