Introduction to Automatic Liquid Density Meter SDW-008

Automatic Liquid Density Meter SDW-008The liquid density measurement is based on the principle that the oscillation frequency is different when the double U-shaped tube is filled with different media. After pumping the liquid to be tested into the resonant cylinder sensor, the measurement data is processed by a microcontroller, which is fast, direct, and highly sensitive. This liquid density meter can be widely used for measuring the density of various liquids, and with different concentration conversion software, it can directly read the concentration value of the corresponding liquid, such as alcohol. Through the processing of the microcontroller software, the volume concentration data can be directly read, making testing more convenient.

Automatic liquid density meterSDW-008It can be widely used for measuring the density of various liquids, and has been widely applied in various fields such as chemical, pharmaceutical, petroleum, and food and beverage processing. It can also be used for quantitative packaging testing in quality and technical supervision systems, as well as in laboratories of various colleges and universities.

Features:

1. Constant temperature control: As the liquid density is greatly affected by temperature, it is necessary to convert the liquid density detected at real-time temperature into the liquid density at 20 ℃. This instrument is controlled by a constant temperature bath, where the sensor, its components, and the sample solution are sealed inside the bath. The temperature of the oscillation tube (sample solution) is detected by a temperature sensor, and the electronic components are controlled by a microcontroller to cool or heat it, ensuring that the temperature inside the bath remains stable within the range of 20 ℃± 0.1 ℃. This not only solves the problems and errors caused by conversion, but also ensures the measurement accuracy, stability, and repeatability of the instrument (the constant temperature value can be customized according to user requirements).

2. Directly display the density value of the liquid at 20 ℃, with temperature display: detect the oscillation frequency of the sensor through a microcontroller, use the mathematical model of the relationship between the sensor frequency and liquid density to calculate the density value of the liquid, and then perform floating-point operations to ensure the accuracy of the measurement results without additional errors caused by insufficient calculation bits during the operation process. The density value calculated by the microcontroller is passed throughfive positionsDigital display and temperature display window.

3. Automatic sampling: The use of a microcontroller to control a stepper motor to drive a peristaltic pump for sample suction improves the automation level of the product

4. Acid and alkali resistant pipelines: The pipelines that come into direct contact with liquids are all imported acid and alkali resistant pipelines to ensure that the instrument can measure acid and alkali solutions.

5. Data storage and transmission: Equipped with a built-in storage chip, it can store 80 sets of detection data and can be recalled and deleted. It can be connected to a computer through a 232 interface according to user requirements (customized).

6. Auxiliary function: According to user needs, use specialized software to read the corresponding liquid concentration value (such as alcohol content) at the corresponding temperature through the conversion key.

7. Calibration function: When the instrument is not used for a long time, drift will occur. This instrument can be calibrated using 20 ℃ pure water as a standard, which is a function that glass density meters cannot achieve.

Technical Specifications

Measurement range: 0.0000~1.9999g/cm³

Accuracy: ± 0 0008g/cm³

Resolution: ± 0 0001g/cm³

Alcohol content measurement range: q: 0~100%

Alcohol content indication error: ± 0.4%

Constant temperature control: 20 ℃± 0.1 ℃ (customizable constant temperature of 25 ℃)

Sampling volume: 2ml/time (automatic injection and manual injection)

Data storage: 80 sets

Environmental temperature requirement: 5 ℃~35 ℃

Power supply: 220V ± 22V, 50Hz ± 1 Hz, 50VA

Dimensions: 206mm × 205mm × 200mm

Instrument weight: 3.2Kg

Precautions

1. During calibration, the water should ensure its purity, rinse it several times, and confirm that there are no bubbles in the vibrating cylinder in order to make the calibration data accurate.

If the liquid used for measurement is an acid-base solution, it is necessary to replace it with a specialized acid-base resistant pipeline.

3. After the experiment, the instrument pipeline should be cleaned for the next test.