brief introduction

The conventional five parameters in water quality testing include: temperaturepH、 Dissolved oxygen, conductivity, turbidity. It is a basic indicator for water pollution detection, proposed in the "Guidelines for the Development of Environmental Monitoring Instruments" issued by the Chinese Ministry of Ecology and Environment, “The automatic water quality monitoring project is divided into five parameters of water quality routine and other projects. The five parameters of water quality routine include temperaturepH、 Dissolved oxygen (DO), conductivity, and turbidity, while other parameters include permanganate index, total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), and ammonia nitrogen (NH3-N) The five conventional parameters of water quality play an important role in the prevention and control of water pollution in China.

The significance of detecting the five conventional parameters of water quality:

1. pH：Surface water qualityThe change in pH value can affect the ability of algae to absorb oxygen and the sensitivity of animals to food intake;
2. conductivity：Mainly measuring the conductivity of water and monitoring the total ion concentration in the water. It contains a total amount of various conductive substances such as chemicals, heavy metals, impurities, etc.
3. Dissolved oxygen:Dissolved oxygen in surface water is not only consumed by reducing substances such as sulfides, nitrite ions, and ferrous ions in water, but also by the respiration of microorganisms in water and the oxidative decomposition of organic matter in water by aerobic microorganisms. Dissolved oxygen is an important indicator for surface water monitoring, indicating whether a water body has self purification capacity.
4. Turbidity:The turbidity value intuitively reflects the degree of turbidity of the water body. The degree of turbidity is mainly caused by insoluble substances in the water, including suspended sediment, corrosive substances, planktonic algae, and colloidal particles. Reducing turbidity also lowers bacteria, Escherichia coli, viruses, Cryptosporidium, iron, manganese, and other contaminants in the water.
5. Temperature:Changes in surface water temperature can have significant negative impacts on aquatic wildlife, affecting their growth and feeding rate, as well as their reproductive time and efficiency.

RQ-205The portable water quality five parameter detector adoptsThe electrode method is used to detect various measurement indicators, with a small overall size and easy portability. It can be widely applied in industries such as surface water, river and lake water, municipal sewage, industrial wastewater, aquaculture, scientific research and environmental protection.

Functional Features

1. Color touch screen design, fully Chinese interface, easy and fast operation;
2. The instrument is designed to be compact and lightweight, with a built-in large capacity lithium battery, making it convenient for outdoor water quality measurement operations;
3. Flexible switching of measurement indicators, rapid measurement, response time block, and high measurement accuracy;
4. The whole machine adopts high-strength aluminum alloy shellCorrosion resistance, high strength, and good waterproof effect;
5. Large capacity data storage, convenient for querying and printing historical measurement data;
6. Can be connected to a portable thermal printer for on-site printing of measurement results;
7. Equipped with data collection and analysis software, data can be uploaded to a computer;
8. Data can be exported to the phone via BluetoothAPPImplement remote data sharing (optional);
9. The instrument is easy to operate, users do not need to master complex professional knowledge, the operating cost is low, and the anti-interference ability is strong.

Parameter indicators