Inhoudsopgave
Belang van het testen van de waterkwaliteit in het wetenschapscurriculum van middelbare scholen
Model
POP-8300 online analyser voor vrije chloor | Meetbereik |
(0,00-2,00)mg/l(ppm) (0,00-20,00)mg/l(ppm) | Nauwkeurigheid |
Indicatiefout 10 procent | Resolutie |
0,01 mg/l(ppm) | Communicatie-interface |
RS485 MODBUS RTU-communicatieprotocol | Analoge uitgang |
Dubbelkanaals (4-20)mA-uitgang; Geïsoleerd, omkeerbaar, volledig instelbaar, dubbele modus instrument/zender; ±0,1mA transmissienauwkeurigheid | Besturingsuitgang |
Dubbel kanalen, laadcapaciteit 50mA (max), AC/DC 30V | Voeding |
Aangesloten op een elektrische voeding AC80-260V;50/60Hz, compatibel met alle internationale stroomstandaarden (110V;220V;260V;50/60Hz). | Werkomgeving |
Temperatuur:(5-50)℃;relatieve vochtigheid:≤85 procent RH (niet-condensatie) | Stroomverbruik |
Opslagomgeving | <20W |
Temperatuur:(-20-70)℃;relatieve vochtigheid:≤85 procent RH (niet-condensatie) | Installatie |
Wandmontage (met de vooraf ingestelde achtercover) | Kastgewicht |
≤10kg | Kastafmeting |
570*mm*380mm*130mm(H×W×D) | Eenvoudige experimenten voor middelbare scholieren om de waterkwaliteit te testen |
Over het geheel genomen is het testen van de waterkwaliteit een waardevol educatief hulpmiddel waarmee middelbare scholieren kunnen leren Hoe belangrijk het is om onze watervoorraden te beschermen. Door eenvoudige experimenten uit te voeren om de pH, verontreinigingen, opgeloste zuurstof en voedingsstoffen te testen, kunnen studenten een beter inzicht krijgen in de factoren die van invloed kunnen zijn op de waterkwaliteit en het belang van het monitoren en onderhouden van gezonde waterbronnen. Deze praktische leerervaringen kunnen studenten inspireren om rentmeesters van het milieu te worden en actie te ondernemen om onze kostbare waterbronnen voor toekomstige generaties te beschermen.
Water quality testing is an important aspect of environmental science that helps us understand the health of our water sources. Middle school students can engage in simple experiments to test water quality and learn about the factors that can impact it. These experiments not only provide hands-on learning opportunities but also raise awareness about the importance of protecting our water resources.
One simple experiment that middle school students can conduct to test water quality is the pH test. pH is a measure of how acidic or basic a substance is, and it can have a significant impact on water quality. To conduct a pH test, students can use pH test strips or a pH meter to measure the pH of water samples from different sources such as tap water, pond water, or rainwater. By comparing the pH Levels of these samples, students can learn about the importance of maintaining a balanced pH in water bodies.
Another experiment that middle school students can perform is testing for the presence of contaminants in water. Contaminants such as heavy metals, Pesticides, and bacteria can pose serious health risks if present in high concentrations. Students can use simple testing kits to detect the presence of these contaminants in water samples. By analyzing the results of these tests, students can gain a better understanding of the potential threats to water quality and the importance of monitoring and treating water sources.
In addition to testing for contaminants, middle school students can also conduct experiments to measure the levels of dissolved oxygen in water. Dissolved oxygen is essential for aquatic life, and its levels can be affected by factors such as temperature, pollution, and the presence of plants and algae. Students can use a dissolved oxygen test kit to measure the amount of oxygen in water samples and observe how different factors can impact these levels. This experiment can help students understand the importance of maintaining adequate oxygen levels in water bodies to support aquatic ecosystems.
Furthermore, middle school students can explore the impact of nutrients on water quality by conducting experiments to test for the presence of nitrates and phosphates in water. Excessive levels of these nutrients can Lead to eutrophication, a process that can result in algal blooms, oxygen depletion, and harm to aquatic life. Students can use test kits to measure the levels of nitrates and phosphates in water samples and observe how these nutrients can affect water quality. By conducting these experiments, students can learn about the importance of managing nutrient levels in water bodies to prevent environmental degradation.
Overall, water quality testing is a valuable educational tool that can help middle school students learn about the importance of protecting our water resources. By engaging in simple experiments to test for pH, contaminants, dissolved oxygen, and nutrients, students can gain a better understanding of the factors that can impact water quality and the importance of monitoring and maintaining healthy water sources. These hands-on learning experiences can inspire students to become stewards of the Environment and take action to protect our precious water resources for future generations.