РазборкаTDS 3 и улучшение работы температурной компенсации

Summary

This video explains how to disassemble and enhance a basic, affordable TDS meter (model DS3). It covers step-by-step disassembly, starting from removing the cover and taking out the battery components, to revealing the internal circuitry, electrodes, and thermometer. The guide offers a tip for improving temperature measurement accuracy by applying thermal paste to the temperature sensor. It also details the process of reassembly, emphasizing the importance of proper sealing to prevent water damage. The video is ideal for anyone looking to better understand or enhance their TDS meter’s performance.

Takeaways

• 🔧 The video covers disassembly and understanding the DS3 TDS meter, a simple and affordable device.
• ⚙️ Start by removing the cap, which is also the sample container, to reveal the measurement section with two electrodes and a thermometer.
• 🔋 The upper part contains batteries, which need to be carefully removed.
• 🔩 To access the internal circuit, gently push out the measurement section with a tool between the electrodes or the temperature sensor.
• 💡 The circuit is sealed with adhesive, and the temperature sensor is located here, which is essential for accurate temperature correction during measurements.
• 🌡️ Slow temperature readings can occur due to insufficient contact between the sensor and the water; adding thermal paste (e.g., KPT-8) can improve heat transfer and accelerate temperature compensation.
• 🏭 The factory does apply a small amount of thermal paste, but it may not be enough for optimal performance.
• 🔄 To reassemble, reverse the disassembly steps, ensuring to add thermal paste and reseal the perimeter to prevent water from entering the device.
• 💧 The TDS meter should not be submerged beyond the cap’s level to avoid water damage.
• 📏 For accurate measurements, the device must be submerged up to the appropriate depth, ensuring the temperature sensor and electrodes are in contact with the water.

Q & A

What is the main topic of the video?

The video focuses on disassembling and understanding the basic structure of a simple and inexpensive TDS meter, specifically the DS3 model.

What is the first step in disassembling the TDS meter?

The first step is to remove the cap, which doubles as the sample container, revealing the measuring part with two electrodes and a thermometer.

How should the battery be removed from the device?

The battery should be carefully removed after lifting the upper part of the TDS meter, where the battery compartment is located.

What caution is advised when removing the measuring circuit from the TDS meter?

It is recommended to press between the electrodes or between an electrode and the temperature sensor while gently pushing the circuit out, ensuring that no components, such as buttons, are damaged.

What problem do users sometimes encounter with the temperature correction of the TDS meter?

Some users report that the meter measures temperature slowly or takes time to stabilize readings.

How can the performance of the temperature sensor be improved?

Applying thermal paste, such as KPT-8, to the temperature sensor can improve the heat transfer and speed up the device’s temperature compensation.

Why isn’t thermal paste applied in sufficient quantity during manufacturing?

The factory does apply a small amount of thermal paste, but it might not be enough for optimal performance, which is why adding more paste can enhance the sensor's functionality.

What should be done to prevent water from entering the device?

After disassembly, the device should be resealed with silicone or another sealant around the perimeter to prevent water from entering the case if it is submerged deeper than the cap’s level.

How should the TDS meter be assembled after disassembly?

The meter should be reassembled in reverse order, ensuring the proper alignment of components, sealing the perimeter, and securing the device back into its casing.

What is the correct way to use the TDS meter for accurate measurements?

The device should be submerged in water up to the level marked on the cap, ensuring that both the temperature sensor and electrodes are properly immersed for accurate readings.