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Portable Density Meter

Portable density meters are used to measure the density or concentration of liquid media. Density or concentration measurement is an important process control in product manufacturing. Portable density meters can also be used as indicators for other quality control parameters such as solid content or concentration values. They can meet various measurement requirements of users for density, concentration, solid content, and temperature.

Origin	China
Brand	Sino-Inst
Type	Portable Density Meter
Power Supply	Rechargeable version (V/HZ)
Measuring Range	0-3g/cm³
Display Method	Digital
Application	Liquid density, concentration, specific gravity, and temperature measurement
Price	USD 1990

Features

Tuning fork sensors feature a compact size, high precision, excellent stability, require no maintenance, and exhibit no data drift.
They incorporate temperature compensation, automatically adjusting data when temperature changes occur.
With faster response times (millisecond level), they are ideal for rapidly changing fluids;
Minimal sample volume required (only enough to cover the tuning fork);
Enable real-time online measurement for dynamic environments like pipelines or reactors;
Deliver high measurement accuracy (±0.0001~0.001 g/cm³);
Resist liquid turbulence and bubbles (select models feature anti-interference design);
Require no manual readings, supporting automated data logging.

Specifications

Power Supply: Built-in 3.7VDC lithium battery with charger

Concentration Range: 0~100% (at 20°C), calibratable to specific range based on application

Density Range: 0~2 g/mL, calibratable to specific range based on application

Concentration Accuracy: 0.5%, Resolution: 0.1%, Repeatability: 0.2%

Density Accuracy: 0.003 g/mL, Resolution: 0.0001, Repeatability: 0.0005

Medium Temperature: 0~60℃ (liquid) Ambient Temperature: -40~85℃

Medium Viscosity: <2000 mPa·s

Response Time: 2 seconds

Battery Low Voltage Indication: To be upgraded

Interface Material: Stainless steel

Cable Material: Corrosion-resistant silicone rubber

Wetted Parts: 316 stainless steel, customizable upon request

Accuracy	±0.003g/cm³	±3.0kg/m³
Working Range	0~3g/cc	0~3000kg/m³
Repeatability	±0.001g/cc	±1kg/m³
Process Temperature Effect (Corrected)	±0.0005g/cm³	±0.5kg/m³
Process Temperature	0~60℃ (liquid)
Ambient Temperature	-40~85℃
Temperature Coefficient	0.1kg/m³/℃ (corrected)
Built-in Temperature Sensor	PT100
Wetted Parts	Stainless steel 316L, Hastelloy, Zirconium
Fork Polished	Standard

Liquid and material compatibility:

Name	Name:	Molecular formula	concentration(%)	316L	Hastelloy	Zirconium
Acid	Hydrochloric acid (excluding hydrofluoric acid)	HCl	0-40	×	○	☆
	Sulfuric acid	H2SO4	0-50	○	○	☆
		H2SO4	50-75	×	○	○
		H2SO4	75-98	○	○	○
	Nitric acid	NHO3	0-100	○	○	☆
	Phosphoric acid	H3PO4	0-98	○	☆	×
Base	Sodium hydroxide	NaOH	0-100	○	☆	×
	Potassium hydroxide	KOH	0-50	○	☆	☆
	Calcium hydroxide	Ca（OH）2	0-50	○	☆	○
Other	Urea	(NH2)2CO	0-100	☆	☆	☆
	Sodium hypochlorite	NaOCl	0-16	○	○	×
	Hydrogen peroxide	H2O2	0-90	☆	☆	×
☆ Recommended ○ Use under specific concentration and temperature limits × Do not use

Portable Density Meter Principle

A tuning fork density meter uses an acoustic frequency signal source to excite a metal fork, causing it to vibrate freely at its center frequency. This frequency has a direct correlation with the density of the liquid in contact, thus allowing the measurement of the liquid’s density through frequency analysis. Temperature compensation further eliminates temperature drift in the system.

The concentration can be calculated at 20°C using the formula relating the liquid’s density and concentration. Portable tuning fork density meters integrate density, concentration, and Baumé measurement, and offer a variety of liquid selection options.

Particle size limitation		Contains gas	Maximum liquid viscosity
Particle diameter	Suspended particulate matter %
<10 micrometers	<=40%	Generally not used	<200Ompa·S
10~50 micrometers	<=20%

Featured Applications

Industrial Production Sites

In oil refineries, explosion-proof densitometers can directly detect the density of crude oil and diesel fuel in flammable and explosive environments, avoiding the safety risks of traditional glass flotation meters.

In the coatings industry, online densitometers are used to monitor the mixing ratio of resin and solvent in real time, with an accuracy of ±0.001 g/cm³, reducing manual sampling errors.

In the Food and Beverage Industry

Soft drink production lines use online densitometers to measure sugar content, outputting concentration values within 5 seconds, supporting dual quality control of beer alcohol content and soft drink sugar content.

Dairy companies use portable densitometers to detect milk density on-site, combining intelligent algorithms to automatically calculate protein content, avoiding time-consuming laboratory testing.

Environmental Protection and Water Treatment

Wastewater treatment plants use sludge concentration meters to measure sludge concentration, adapting to harsh environments. Industrial cooling systems use portable densitometers to detect ethylene glycol concentration, preventing freezing or corrosion.

Scientific Research and Field Operations

Marine research vessels are equipped with high-precision laboratory densitometers to analyze seawater salinity, with a resolution of 0.0001 g/cm³, supporting temperature-compensated measurements of deep-sea samples.

FAQ

Baumé meters and density meters are not exactly the same, but they are related.

Both Baumé meters and density meters involve density measurement, but their focus and applications differ. Baumé meters are more focused on measuring the concentration of solutions (measured in Baumé degrees), while density meters are more widely used to measure the density of various substances.

density meter: A density meter is an instrument used to measure the density of an object. It can calculate density using different principles, such as measuring the ratio of an object’s mass to its volume, or utilizing the principle of buoyancy in fluids. Applications include chemistry, physics, and materials science.

Baumé Meter: A Baumé meter is an instrument used to measure the concentration of solutes or sugar content in solutions. It utilizes the relationship between the refractive index of a solution and the concentration or sugar content of the solute. Baumé meters are commonly used in the food, beverage, and agricultural industries to determine the quality and composition of products.

The differences between a hydrometer and a density meter are as follows:

Density is the mass of a substance per unit volume. Specific gravity is the ratio of the density of a substance to the density of pure water at 4°C.

Measurement principle: A hydrometer calculates density by measuring the change in buoyancy of an object in different media, while a density meter directly measures the mass and volume of the object to obtain the density value.

Measurement content: A hydrometer measures specific gravity (weight/volume), while a density meter measures density (mass/volume).

Operation method: A hydrometer requires immersing the object in a specific liquid and measuring the immersion depth, while a density meter directly measures the mass and volume of the object.

More Density Measurement Solutions

**Ultrasonic Density Meter/Concentration Meter**

**Digital Alcohol Concentration Meter/Density Meter**

Tuning Fork Density Meter 316L — **Tuning Fork Density Meter/Concentration Meter**

Split-Type Density Meter - Baumé Meter — **Split-Type Density Meter – Baumé Meter**

What Is a Density Meter? And Guide to Types

Application Case: Mass Flow Meter Measures Lime Slurry Flow and Density

Sino-Inst’s portable density meters differ from Anton Paar’s; our portable tuning fork density meters are more suitable for on-the-spot testing in outdoor environments and open-air factories. They can also be configured with special materials such as 316L, titanium, zirconium, and HaC to suit different media.

Our portable density meters are reasonably priced. We use international express delivery to quickly ship to countries such as the United States, the United Kingdom, and Singapore. We offer a one-year warranty on our portable density meters. If you need density or concentration measurements, please feel free to contact us.

Zhang Wei

Zhang Wei, possesses 20 years of experience as an automation instrumentation engineer, specializing in the research, design, installation, commissioning, and maintenance of automation instruments.

Face to various instrument communication protocols (such as Modbus, Profibus, etc.), with solid hardware circuit design and software programming skills (proficient in C language and PLC programming). Has extensive project experience; projects he has led and participated in have all achieved outstanding results, improving product accuracy, reducing costs, and increasing production efficiency.

Possesses excellent communication and coordination skills and a strong team spirit, enabling him to quickly respond to customer needs and provide high-quality automation instrumentation solutions.

Portable Density Meter – Button or Touchscreen | Best Price

Portable Density Meter measures the density, concentration, specific gravity, and temperature of liquids. Accuracy ±0.003g/cm²; Working range 0 to 3g/cc.

Product SKU: Portable Density Meter

Product Brand: Sino-Inst

Product Currency: USD

Product Price: 1900

Price Valid Until: 2029-09-09

Product In-Stock: InStock

Editor's Rating:
5