SDI line tester tester wi96821

Type: water rapid analyzer measurement range: 2-10SDI unit of measurement accuracy: 0.01SDI Unit Supply voltage: no power Resolution: 0.01SDI unit custom processing: No Use: used to measure water sludge sedimentation index product: The product reverse osmosis system is mainly used to determine the SDI (pollution index) values, in strict accordance with the United States ATME standards, traffic through the filter membrane under a certain pressure test to calculate the attenuation through the SDI values. (1) the current international latest and most advanced SDI tester. (2) The core technology is provided by the United States, the core components of US origin material. Equipment designed and manufactured entirely in accordance with US standards. (3) spare parts complete, timely supply. (4) in place comprehensive services, product technical support provided by the United States and China experts. Measurement and Testing (5) of the instrument data accuracy, validation repeat rate. (6) the exclusive use of the new supporting materials, a significant reduction in the price of spare parts and supplies, reduce operating costs. Pollution Index (SDI) Tester Instructions: detection and calculation methods: 1, the SDI tester installed in the test position on the RO system. If the test point in the pretreatment system, so when the test SDI value, RO system should be running, otherwise the final test results will be invalid. 2, at the beginning, you can not put a 0.45μ microfiltration membrane within SDI tester. 3, after the tester is complete, open the valve on the tester, so that the measured water flow directly through the tester a few minutes. 4. Close the valve, put a 0.45μ white microporous membranes with special tweezers (bright side up) in the tester diaphragm support plate and gently pressing "0" ring and diaphragm shelters , screw on the plastic screws, but not too tight. 5, a portion of the valve opens when the water flows through the tester, slowly unscrew one or two plastic screws, allowing water to diffuse out of the tester, to expel the air in the tester. 6, determined to have no air inside the tester, and gently tighten the plastic screws. Fully open valve, pressure regulator valve to 0.2MPa (207KPa), hold the pressure and close the valve. During the entire test, the pressure must remain constant. 7, with a suitable container to collect water samples. As long as the test each time with the same capacity, the size of the capacity is not important. Capacity between 100 to 500 ml. Different containers are available: for example cylinders, beakers, coffee mugs, Coca-Cola bottles. General considerations collect 500 ml water sample. 8, the valve is fully open, collecting 500 ml with a stopwatch to measure the time required for water samples, and recorded as T (1) = __ seconds. After the collection, continues to keep the valve open, allowing water to continue to flow. 9, over 5 minutes and then measured with a stopwatch was collected another 500 ml water sample time required and recorded as T (5) = __ seconds, each doing over again after 10 and 15 minutes, respectively, the same test and recorded as T (10) and T (15). After testing, SDI value can be calculated. Some water samples may require data sampling continues to T (20), T (30) or T (60), of course, this is a very small number of water samples. 10. Determination of the water temperature. Throughout the test period, the water temperature must be kept consistent. 11, SDI value is calculated by the following formula: SDI = 100P30 / Tt = 100 (1-T1 / T2) / Tt P30 ----- at 207kpa clogging water pressure index; Tt total test time (min ) usually T15, this time P30 <75%, or test T10 or T5, which in this case P30 <75% T1 ----- initial time required to collect 500ml water sample (sec); T2 --- - 500ml water sample was collected required by T1 (usually T15, i.e., 15 minutes) after the time (seconds).