Pressure gauges: technical characteristics. Pressure gauges for water and other liquids

Pressure gauges are special instruments that measure pressure. To date, there is a large number of them. There are gauges of low as well as high pressure. Models with a temperature scale are classified as thermometers. These devices are used in many areas. First of all, they are designed to study various natural processes. They also help in determining the pressure of technical devices. Each model has its own accuracy class.

The device of deformation gauges

In the center, the gauge pressure gauge has a tubular spring. Nearby are the silos that interact with it. Also in the device there are membranes. They are of different kinds. The most common are flat, as well as corrugated membranes. For them a special box is provided in the manometer. The sensitivity of the device depends, in this case, on the rigidity of the spring. The manometer body can be made of different materials.

What does a mechanical manometer consist of?

The arrangement of mechanical manometers is quite simple. The spring in this device is single-turn. It interacts with the holder, which is located under it. Also in the manometer there is a small diameter leash. It is necessary to fix the tooth sector. It is fixed to the arrow, which shows the actual pressure indicators.

Distinction of electrocontact manometers

Inside the electrocontact pressure gauges of water have a special leash. It interacts with the arrow of the device. In the bottom and top of the device are electrical contacts. When the pressure is high, the circuit is in the open state. If the indicator enters the operating range of the pressure gauge, the alarm system through the arrow shows the deviation. For position control, a special relay is provided in the network.

Bellow type manometers

Under the body of the bellows pressure gauge there is a block. Above it there is silicon of organic liquid. Under the block is installed a working bellows, which is in contact with the glass. It is always in a fixed state. In addition, a pressure gauge is provided in the manometer, which is connected to the central axis. Rubber rings are located on the corrugation. The inner rod works in the device with the help of valves. There are two types (stop and equalization).

Membrane pressure gauges

In the center of the membrane pressure gauges there is a very complex system of levers. In this case, an axis is provided at the bottom of the device. It connects with an arrow that shows the pressure. In the upper part of the manometer there is a membrane box. In addition, under the union there is a corrector, which is hidden behind the profile scale.

Devices "DM2010"

These pressure gauges have the following technical characteristics : accuracy class - 1.5, the range of readings is in the region from 0 to 0.25 MPa, the voltage in the alternating current circuit is 27 A. The operating temperature is in the range from -50 to +60 degrees. On average, the weight of the manometer is 0.8 kg. The indicator of the DC circuit fluctuates around 110 A.

Characteristics of manometers "MP50"

These electronic pressure gauges are used to determine the excess water pressure. They can be used only in a non-crystallizing medium. Diameter of these devices are different. In general, they are available in sizes from 50 to 160 mm. The accuracy class for them is 2.5. Limits of measurements are from 0.1 to 25 MPa. They have a standard version with a union.

Pressure gauges are produced exclusively from brass with a diameter of 1.5 mm. The measuring element consists of a copper alloy. Springs in these pressure gauges are of two types (Bourdon and multi-turn). The dial of this device consists of polystyrene. However, some manufacturers release it from copper alloy. As a rule, the scale is black and the arrow is white. The case of the device is made of steel. Polymer glass. The rim of this pressure gauge (electronic) is steel, which is painted black.

Manometers "МП63"

These pressure gauges have the following technical characteristics: the diameter of the instrument is 50 mm, the accuracy class is 1.5, and the measurement limits are from 0.1 to 40 MPa. Execution of it is standard and provides for a choke. As a rule, it is installed radial type. However, in some cases, there is an axial fitting in the device. It consists entirely of brass. The spring in the manometer is made of copper. In turn, the dial consists of aluminum. It is always painted black. The arrow is standard white. The case of the manometer is completely steel. In this case, the glass is installed polymer. The rim in this manometer is made of plastic and painted black.

Models of "MP2-UV"

This pressure gauge is used to measure water pressure . The accuracy class is 2.5. Degree of protection - series "IP40". The case diameter is 60 mm. This pressure gauge can be used for 10 years. Its weight is 0.15 kg. The body of the device consists of steel. It can be used at temperatures from -50 to +60 degrees. Glass in this model is provided organic.

The fitting in the manometer is made of bronze. The spring is tubular. The triboco sector mechanism is made of bronze. In some cases, brass or stainless steel is used. The dial is aluminum and painted white. The coupling, as a rule, is installed in a radial type. In some cases, it is without a flange. The central-axial choke can also be installed without it.

Manometers "МПВ3-УФ"

These pressure gauges have the following technical characteristics: the thread of the union is provided 1.5 mm, the accuracy class is 2, and the degree of protection is set by the "IP40" series. The weight of this device is 0.5 kg. Served this model for about 10 years. The case diameter is 100 mm. This device can be used at temperatures ranging from -50 to +50 degrees. The case is mounted very durable and loads withstand large. It is made entirely of steel.

Glass is installed technical. The fitting in the manometer is made of bronze. The spring is mostly tubular. It also consists entirely of bronze. Tribko-sector mechanisms can be steel or brass. The dials are made of aluminum alloy. The color is always white. Fittings are only of a radial type. In some cases, they are available without a rear flange.

Characteristics of the "VP4-UV" model

This model is designed to measure excess air pressure in the range from 0 to 40 MPa. The accuracy class is 1.5. In this case, the protection level is provided by the standard "IP40". These pressure gauges can be used at ambient temperatures from -50 to +60 degrees. The diameter of the body is as much as 150 mm. On average, the life of the manometer is 10 years. The case of it is made of steel and is very durable.

In addition, it is necessary to note the technical glass in the device. The tubular spring together with the union is made of bronze. The dials are only available in white. They are made of aluminum alloy. Eccentric-axial fittings are always installed without a flange.

Parameters of manometer "DV2030"

This model is designed for measuring fuel pressure in the limit from -30 to 30 MPa. The thread of the union is 1.5 mm. The manometer can be used at a temperature of -50 degrees. Accuracy class is 2. Degree of protection - "IP30" series. The case of this device in diameter is exactly 100 mm. The service life of the manometer is 8 years. At the same time, its mass is 0.6 kg.

Separately, it is worth mentioning the solid body, which is made of steel. Glass manufacturers make organic. The spring is only of a tubular type. It is made, as well as fittings, made of bronze. The dial is white. The sector mechanism is completely made up of bronze. In some cases, brass and steel are used. Contact groups are standard. At the same time, this fuel pressure manometer is equipped with magnetic preload. The fittings are only of a radial type. All of them are installed in the device without a flange.

Model "DM2005"

Data are given indicating signal gauges for measuring gas pressure. At the same time they are equipped with connecting fittings. Their size is exactly 10 mm. Accuracy class of the device is 1.5. Manometers with a body diameter of 150 mm are produced. The protection system is installed in the "IP30" series. They weigh 0.9 kg. At the same time they can serve about 9 years. In general, the body of them is quite strong.

Glasses are of organic type. The union and spring in the device are made of bronze. Dial these gas pressure gauges have an aluminum alloy. It is painted white. Radial fittings, as a rule, are not equipped with flanges. However, there are models with them. The contact group is standard. In this case, there is a magnetic preload.

What is the difference between "YES2005"?

The thread in this manometer is metric by default. Maximum pressure device can withstand 30 MPa. Operate the model can even at a temperature of -60 degrees. The accuracy class is rather high and is 1.5. The protection system is standard. The body is produced with a diameter of not more than 150 mm.

The average service life is 10 years. The whole manometer weighs 0.9 kg. The body itself is made of steel and is not afraid of small mechanical damages. The coupling in this model is of the radial type. There are devices with a flange and without it. Contact groups are installed only standard. Magnetic compression, as a rule, is available. The dial material is aluminum alloy. Separately, mention should be made of the triboco sector mechanism. It is made of bronze in a manometer. Steel, as well as analogs from brass are rare. Glass is produced only organic type.

Characteristics of "DA8010"

This high pressure manometer is available with a special scale. In this case, the limit values are maintained at the level of 10 MPa. In addition, it should be noted that the device provides a damper. The rim in the device is made of steel. It is painted, as a rule, in black. Glass is installed only technical. The whole body of the manometer is painted black. The dial is made of polystyrene. The arrow is white, and the scale is black. The Bourdon spring acts as a measuring element. It consists entirely of brass. In some cases, manometers are manufactured with a multi-turn spring. The fittings are in the radial as well as the centrally-axial type. All of them are made of brass. The accuracy class for this manometer is 1.5.

Manometer "DM2020"

These pressure gauges have the following technical characteristics: the range of readings ranges from 0 to 20 MPa, in the AC circuit the voltage is 110 A. The operating temperature of the device is from -50 to +50 degrees. The weight of the manometer is 0.7 kg. Accuracy class is provided. 2. The DC system maintains the voltage at 36 A. The degree of protection is a series of "IP40".

Will serve this manometer for about 10 years. The spring is screwed. It is made of bronze. The sector mechanism is made entirely of brass. Among other things, it should be noted a handy dial. It is painted black, and the arrow is white. There is a technical glass in the model. The fitting is fitted with a special thread 1.5. The manometer options come with a flange, and also without it.