Introduction: The KZD-3 upstream and downstream particle counter is a supporting instrument specially designed to evaluate the filtering performance of the filter (filter element) for multiple passes tests. It uses two high-precision laser sensors using the principle of photoresistance (shading type) to detect the particle concentration of the upstream and downstream of the test system multiple times, respectively and at the same time, so as to obtain the filtration efficiency and filtration of the filter (filter). Compared with "GB/T 18853-2002 (ISO 16889:1999) hydraulic transmission filter-multiple pass method for evaluating filter performance of filter element", and "ISO 19438 diesel filter and gasoline filter for internal combustion engine-adopting particle Counting method to determine the filtration efficiency and impurity storage capacity" and other standards. Performance characteristics: 1. Using the principle of photoresistance method (shading method), it has the advantages of fast detection speed, strong anti-interference, high precision and good repeatability. 2. The high-precision sensor guarantees the resolution and accuracy, and the dual laser sensor can realize the particle counting at the upstream and downstream at the same time. 3. Precise measurement sampling system to achieve constant sampling speed and precise control of sampling volume. 4. Color LCD touch screen, touch operation, simple and convenient. 5. Fully comply with the relevant regulations of ISO16889: 1999 (GB/T18853-2002) and ISO 19438 standards. 6. Flexible operation, counting time, interval time and test time can be set. And can set up and downstream to detect separately or simultaneously. 7. It can be set to "initial" mode to verify the filter experiment system. 8. It can be set to "counting" mode to realize the function of desktop particle counting. 9. Built-in printer, can directly print out the test report and filter ratio. 10. Built-in Chinese input method to realize Chinese labeling of test report. 11. It can be connected to the system industrial computer through the RS232 serial port to realize the control and data processing of the particle counter by the industrial computer. Technical index: 1. Light source: semiconductor laser 2. Range of particle size: 1μm～250μm 3. Sensitivity: 1μm (ISO4402) or 4μm(c) (GB/T18854, ISO11171) 4. Detection channels: 32, 16 upstream, 16 downstream, the particle size can be set arbitrarily 5. Detection particle size: arbitrarily set at 0.01μm within the range of 1μm～100μm or 4μm(c)～70μm(c) 6. Sampling volume: 10ml 7. Relative error of sampling volume: better than ±1% 8. Detection speed: 20mL/min 9. Cleaning speed: 20mL/min 10. Coincidence error limit: 24000 grains to 4000 grains/mL (5% coincidence error) 11. Particle count repeatability: RSD<2% 12. Relative error of particle count: ±10% 13. Online pressure: 0.2～1Mpa 14. Test sample temperature: 0℃～80℃ 15. Working temperature: 0℃～60℃ 16. Storage temperature: -30℃～80℃ 17. Power supply: 100～245V, 50～60Hz 18. Dimensions: host 420×300×190mm Constant current sampler 310×250×125mm 19. Net weight of the instrument: host 7kg, constant current sampler 5kg
Introduction: The KZD-3 upstream and downstream particle counter is a supporting instrument specially designed to evaluate the filtering performance of the filter (filter element) for multiple passes tests. It uses two high-precision laser sensors using the principle of photoresistance (shading type) to detect the particle concentration of the upstream and downstream of the test system multiple times, respectively and at the same time, so as to obtain the filtration efficiency and filtration of the filter (filter). Compared with "GB/T 18853-2002 (ISO 16889:1999) hydraulic transmission filter-multiple pass method for evaluating filter performance of filter element", and "ISO 19438 diesel filter and gasoline filter for internal combustion engine-adopting particle Counting method to determine the filtration efficiency and impurity storage capacity" and other standards.
