8 best hydrometers

Review of the best according to the editors. About the selection criteria. The the material is subjective, is not advertising and is not serves as a guide to the purchase. Before purchase is needed consultation with a specialist.

In a modern car, technical fluids are used, from the quality of which depends on the health of individual systems and the entire car generally. Therefore, in the arsenal of the motorist should be special density measuring instruments. Densimeters are considered unique. devices with a narrow measuring range. Those appliances, work which is based on the law of Archimedes, are called hydrometers. At when choosing a device, you should know the approximate density range in the test fluid. The recommendations of our experts will help choose the right densimeter.

Selection recommendations

Varieties. All hydrometers used in car maintenance can be divided into two groups.

  1. Densimeters for antifreeze should determine the density coolant in the range of 1.05-1.10 g / cu. see. It is in this range ethylene glycol aqueous solution does not freeze at temperature -25 …- 50ºFROM .
  2. The current source in a passenger car is lead acid battery. If the organization works electric transport, you will have to face maintenance alkaline batteries. Battery Density Meters must withstand exposure to an aqueous solution of sulfuric acid or alkalis. The density range of acid electrolyte is 1.27-1.29 g / cu cm.

Materials For the manufacture of hydrometers used some materials.

  1. Glass is considered the best material for creating a transparent and durable flask. This small tank is typed the dose of fluid required for analysis. Glass has a high resistance to organic compounds, acids and alkalis.
  2. Plastic also withstands aggressive environments, but with time loses transparency. Therefore, measurement results may become not very accurate.
  3. In hydrometers, rubber elements are also used. This is a pear, with by which liquid is sucked into the flask and the hose, it lowered into the cooling system or battery. In addition to resistance to chemical compounds rubber must maintain elasticity in wide temperature range.

Scale. To determine the density of a liquid, two kind of scales.

  1. The digital scale is used in accurate densimeters, it is suitable professionals who need to know the result with an accuracy of one hundredth of a fraction.
  2. The color scale is more suitable for novice motorists. Сits help is easier to evaluate the performance of the technical fluid. The whole scale is divided into 2-3 sectors and is colored in different colors.

We selected 8 best hydrometers in the review. All of them are implemented in trading network of our country. When allocating seats, the editorial board based on the opinion of the expert community, given reviews Russian consumers.

Rating of the best hydrometers

Nomination a place Name of product price
The best hydrometers for antifreeze 1 Jonnesway AR030002 550 rub
2 JTC 1040 360 rubles
3 AV Steel AV-920097 282 rub
The best hydrometers for battery electrolyte 1 Jonnesway AR030001 520 rub
2 Heyner PREMIUM 925 010 426 r
3 AUTOPROFI Battery BAT / TST-118 351 rub
4 JTC 1041 315 rub
5 Pennant AR-02 5002 132 rub

The best hydrometers for antifreeze

The freezing temperature depends on the density of the coolant and boiling antifreeze. The optimal range is the density range. 1.07-1.10 g / ml. But over time, the “cool” loses its properties. So that the liquid does not freeze in the cold winter, it should be timely measure the density of antifreeze. Experts liked the following hydrometers.

Jonnesway AR030002

Rating: 4.9

Jonnesway AR030002

To determine the quality of the coolant in the car The Jonnesway AR030002 hydrometer is suitable. Taiwan manufacturer used a simple principle of action based on law Archimedes. As the vessel fills with antifreeze floating float. Experts drew attention to the wide functionality of the measuring device. One scale indicates the freezing point of the liquid, according to another user may find out about the boiling point. In the asset, the product should be durable case, long service life, compact sizes. Hydrometer is not afraid exposure to an acid or alkaline environment.

Domestic motorists praise the device for simplicity applications, accurate density results, wide functional opportunities. The downside is the high price.

Advantages

  • simplicity;
  • reliability;
  • multifunctionality;
  • compactness.

disadvantages

  • high price.

JTC 1040

Rating: 4.8

JTC 1040

Monitor the operating parameters of the coolant in the car can be using a JTC 1040 hydrometer. Chinese device lightweight (111 g), compact in size and democratic at the price. Experts drew attention to the presence of two scales, according to which you can determine the freezing point and boiling point. Model comes in blister packs that provide device integrity. The principle of operation of the densimeter is based on law Archimedes. The product becomes the silver medalist of our review.

Russian motorists prefer the Chinese hydrometer at an affordable price, beautiful design and ease of use. Of The disadvantages are low resistance to aggressive environments.

Advantages

  • lightness and compactness;
  • blister packs;
  • affordable price;
  • multifunctionality.

disadvantages

  • low resistance to acids and alkalis.

AV Steel AV-920097

Rating: 4.7

AV Steel AV-920097

A reliable assistant to the car owner or mechanic can be hydrometer AV Steel AV-920097. Russian development is carried out in China, which positively affected the cost. The device is designed to determine the density of ethylene glycol solutions used in vehicle cooling system. Device for clarity has two scales, thanks to which you can determine the temperature liquid freezing and boiling point. Manufacturer applied float density measurement method. Experts gave the product bronze of our review for a low price and ease of use.

Users are satisfied with the affordable price, reliability and quality. assembly. Of the shortcomings, the small print on the scale is mentioned; they consider graduation in fahrenheit.

Advantages

  • low price;
  • ease of use;
  • simplicity and reliability;
  • multifunctionality.

disadvantages

  • small font.

The best hydrometers for battery electrolyte

Car batteries use electrolyte, from the density of which depends on the battery level. Optimal the range is 1.27-1.29 g / cu. see. Specialists drew attention to several models of battery hydrometers.

Jonnesway AR030001

Rating: 4.9

Jonnesway AR030001

The hydrometer for electrolyte is widely used. Jonnesway battery AR030001. The device is bought by car enthusiasts for determine the degree of charge of acid batteries, it is suitable for density measurements in alkaline loader batteries. Taiwanese development has a simple design, based on The most important law of hydrostatics. The float takes a certain position in the liquid, depending on its density. The scale has three multi-colored sectors, thanks to which even a beginner It will be easy for the car enthusiast to understand the charge level. Device becomes the winner of our review.

Russian motorists praise the hydrometer for tightness, resistance to aggressive environments, small weight (118 g), effective protection against burns. By cons include the high price.

Advantages

  • universality;
  • light weight;
  • multi-colored scale;
  • durability.

disadvantages

  • high price.

Heyner PREMIUM 925 010

Rating: 4.8

Heyner PREMIUM 925 010

The minimum amount of electrolyte required to determine density using a Heyner PREMIUM 925 010 hydrometer. Instrument consists of a 14 ml plastic case on which is applied scale from 1.1 to 1.3 g / cu. see. It is in this range most often the density of the acid electrolyte falls. Experts gave silver device of our review for the possibility of measurements in low volume batteries. Floatmeter hydrometer type weighs only 0,054 kg, it shows high accuracy results. The product should be included in the asset. High quality. assembly.

But domestic motorists found some disadvantages devices. They are unhappy with a thin nose, an unreliable system. fixation, lack of a cover or case.

Advantages

  • affordable price;
  • plastic case;
  • ease;
  • low electrolyte volume required.

disadvantages

  • no cover or case;
  • unreliable fixation.

AUTOPROFI Battery BAT / TST-118

Rating: 4.7

AUTOPROFI Battery BAT / TST-118

The AUTOPROFI hydrometer BAT / TST-118 is designed to measure density in lead acid batteries. Russian development weighs only 140 g, it is easy to use. On the the manufacturer’s body of the hydrometer plotted a color scale on which except for digital divisions from 1.1 to 1.3 g / cu. see there are three sectors with a different shade. This approach simplifies the task for beginners. motorists, depending on the position of the float can be quickly conclude the battery level. The device comes with pear and acid-resistant hose, while experts consider the price acceptable.

Domestic users praise the hydrometer for simplicity and price accessibility, clear scale. But the accuracy of the measurements leaves to wish for the best.

Advantages

  • affordable price;
  • ease of use;
  • clear scale;
  • durability.

disadvantages

  • narrow scope;
  • inaccurate measurement results.

JTC 1041

Rating: 4.6

JTC 1041

A simple Taiwanese hydrometer JTC 1041 is useful measuring device for motorists and professionals battery men. Thanks to this budget device, you can quickly and sufficiently accurately determine the density of the electrolyte, and therefore degree of battery charge. Scope of the hydrometer limited to lead acid batteries. Float model type equipped with a color scale, divided into three sectors (charged, requires attention, discharged). Experts liked the lightness (140 g) and compactness of the device. The asset should be a solid body and long service life.

In reviews, motorists praise the hydrometer for accuracy, bulb transparency, quality pear. The disadvantages they include sticking of the float to the flask and the absence of a storage case.

Advantages

  • low price;
  • high-quality materials;
  • lightness and compactness;
  • accuracy.

disadvantages

  • sticks the float to the flask;
  • no case.

Pennant AR-02 5002

Rating: 4.4

Pennant

The most popular hydrometer among domestic motorists is the Vympel AR-02 5002 device. Experts consider one of the reasons low price. However, the device also has a number of other advantages. Praise deserves the use of glass for the manufacture of flasks. Glass not cloudy, which allows you to accurately determine the density after many years. The pear sits tightly on the flask; therefore, when collecting electrolyte, do not air is sucked in. Thin nose is convenient to select sample even in small batteries with small holes. The device weighs only 120 g. Operating temperature range makes -30 … + 40ºС. The model closes our review.

The hydrometer was not able to beat competitors because of the short-lived rubber. In addition, the device is quite long (307 mm), without a case or a case to store it is unsafe.

Advantages

  • low price;
  • glass flask;
  • ease;
  • tightness.

disadvantages

  • no case or case;
  • short-lived rubber.


Attention! This rating is subjective, is not advertising and does not serve as a guide to the purchase. Before the purchase consultation with a specialist is necessary.

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