Скачать или смотреть 300g liquid density meter electronic balance

2. Density Meter / Densimeter

Core Function: To directly and quickly measure the density (g/cm³), specific gravity, and other values of solids or liquids.

Working Principle: A density meter is not a standalone instrument but rather a system. It operates based on the Archimedes' principle (water displacement method) and typically consists of the following components:

A high-precision electronic balance: Serves as the core sensor.

A special support frame: Used to suspend the sample.

A beaker containing liquid: Usually distilled water or alcohol.

A weighing platform above the beaker: Used to hold the beaker and measure buoyancy.

Measurement Process (Taking a Solid Sample as an Example):

Weigh in Air: First, place the sample on the balance to measure its weight, obtaining W₁.

Weigh in Liquid: Then, immerse the sample into the liquid (suspended using the support frame) and measure the buoyant force it experiences, obtaining weight W₂.

Automatic Calculation: The software inside the density meter automatically applies the formula to calculate density:
Density ρ = (W₁ / (W₁ - W₂)) × ρ₀
(Where ρ₀ is the density of the liquid used, e.g., the density of water is 1 g/cm³)

Key Features:

Fast and Efficient: No complex calculations required; density values can be read directly within minutes.

High Accuracy: The accuracy of results highly depends on the precision of the electronic balance and the purity of the liquid.

Wide Applicability: Can be used to measure the density of solids (lumps, granules, powders) and liquids.

User-Friendly: Modern density meters usually feature large screens that guide users step-by-step through operations and automatically store results.

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