Installation points and working principle of liquid density meter

Density: The mass of a substance per unit volume at a specific temperature, measured in g/mL or kg/m3. Relative density: The ratio of the density of a substance at a specific temperature to the water density at a reference temperature

Method: Inject a small amount of liquid sample into a vibrating sample tube, and the change in sample tube mass causes a change in vibration frequency. Calculate the density of the sample based on calibration data

Principle: Equipped with a U-shaped vibration sample tube and possessing electronic excitation, vibration frequency counting, and display functions. During the measurement process, it is possible to measure the temperature of the sample and has the ability to control the sample temperature, while achieving the required accuracy of the standard

The measurement range of a liquid density meter is 0-3. The liquid density meter used in physical experiments is an instrument for measuring the density of liquids.

Key points for installation of liquid density meter

1、 Selection of installation environment:

1Liquid density meterThe installation location should avoid direct sunlight, vibration, wind, dust, and magnetic field interference.

2. The ideal placement location is in an environment of 20 ℃/68 ° F and 50% humidity.

3. Confirm that the voltage used matches the required voltage for the liquid density meter.

2、 Horizontal adjustment: Use the horizontal adjustment footrest to adjust the bubble in the level to the center position of the Lianyungang colored circle, so that the entire machine is in a horizontal state.

3、 Test rack installation: Place the measuring rack in the middle of the measuring board.

4、 Installation of container placement plate: Place the liquid placement plate in the two concave fixing grooves on the host.

5、 Install the windproof cover and place the liquid density meter inside the windproof cover.

Working principle of liquid density meter

Instructions:

It's like squeezing a hose filled with fluid with your fingers, and as you slide your fingers forward, the fluid inside the hose moves forward. The principle of peristaltic pump is also the same, except that the fingers are replaced by rollers.

Characteristics of peristaltic pump:

Non polluting: The fluid only comes into contact with the pump tube and does not come into contact with the pump body

High precision: repeatability, stability, and high precision

Low shear force: It is an ideal tool for conveying shear sensitive and highly corrosive fluids

Good sealing: has good self-priming ability, can rotate freely, and can prevent backflow

Easy maintenance: no valves or seals

Explanation of U-shaped oscillating tube method

The square of the oscillation period of the oscillating tube is proportional to the density of the liquid sample filled inside the tube. The design principle of U-shaped oscillating tube is based on this, and the calculation formula is as follows:

ρ=A×P2-B

ρ - density;

P -- period (oscillation period);

A. B-U-tube constant, which is related to the mass and volume of the U-tube.

Advantages of U-shaped oscillating tube method:

Measurement of true density: unaffected by air buoyancy and gravity

Height: not affected by human factors

Small injection volume: only 0.1~1ml is needed each time

Fast measurement speed: only 1-5 minutes per measurement, especially suitable for laboratory and online measurements

Convenient for constant temperature control

Peltier temperature control device

Built in constant temperature and temperature sensor: No external temperature control device is required, it is built-intemperature sensorCan be calibrated and traced back to multiple international standards.

This instrument is suitable for measuring the density of various chemical reagents, liquid food and beverages (carbonated products need to eliminate bubbles first), petroleum liquid products, and other various chemical liquid products. It does not require skilled analysts and does not rely on the measurement environment. It is a tool for safe on-site measurement of liquid density and solution concentration.

Liquid density meterFunction Introduction:

The density of the measured liquid can be directly read through the display screen

Capable of storing 80 sets of detection data

The host has functions such as sampling, data callback, and deletion

Key controlled operation, automatic liquid intake for sampling

Error verification is simple, only pure water is needed to calibrate the instrument

Zhongshan Sanyi Measuring Instrument Co., Ltd. was established in 2009 and is located in Tanzhou Town, Zhongshan City, the geometric center of the Guangdong Hong Kong Macao Greater Bay Area and an industrial hub in the Pearl River Delta.If you need cooperation, please feel free to contact us