The use of electronic manometer technology has overcome the problems of traditional manometers. This has been a big step for the optimal use of manometers.
A manometer is a device that uses pressure to measure the amount of pressure applied to a liquid cylinder. There are several types of manometers used to measure gases and liquids.
Today, manometers use electronic sensors instead of liquid cylinders.
In general, manometers are available in two types, analog and digital. Some users prefer to use analog manometers. But most users like to use digital manometers that are more accurate in showing.
In the continuation of this article, we will acquaint you with the issues related to the use and technology of electronic manometers.
What is an analog manometer?
In analog manometers or traditional liquid manometers, a liquid is placed in a U-shaped cylindrical tube used to measure pressure.
Using this analog manometer, technicians can detect the amount of pressure on the system by looking at the location of the fluid in the tube.
Some technicians prefer to use traditional liquid manometers because they do not require a power supply. This means that unlike digital manometers, which must be equipped with batteries to take advantage of electronic manometer technology, and fail when the battery runs low, these manometers (analog manometers) continue to operate.
Another reason that some technicians prefer to work with these manometers is that they are easy to work with.
For specialized advice on pressure and precision pressure instruments in the industry, as well as purchase advice, you can visit the pressure measurement page and use our communication channels.
Disadvantages of traditional liquid manometers (analog manometers)
Differential pressure measurements are traditionally done using liquid sphygmomanometers. Two types of liquid manometers are common.
Fluorine carbon, which can read a maximum of 4.5 kpa, and mercury, which can measure 65 kpa.
There are larger manometers, but due to their large size, they are almost impossible to install and use on sites.
One of the disadvantages of this type of manometers is their large size, which makes them more difficult to install and ensure their safety in factory installation rooms.
In addition to the physical size problem, another problem with traditional liquid manometers is the use of mercury. Mercury is one of the most dangerous toxins.
Therefore, if liquid mercury escapes from these pipes for any reason, it can create dangers that most users of these manometers are not prepared to deal with.
Practically, there are limitations when using traditional liquid manometers.
The task of engineers when setting up a pressurized system is to ensure that the system is operating at the required pressure. To do this, a pressure gauge or manometer is used.
The use of traditional liquid manometers can only show the differential pressure. In addition, the amount of KVS required for valves or measuring devices is required to generate the flow.
Engineers need to be able to get more information on site when the system is up and running. The calculations required to calculate the flow pressure when using KVS DC devices are very simple.
But when the device has variable pressure, calculating KVS will be very time consuming.
History of electronic manometers
To address the practical shortcomings of traditional liquid manometers, electronic manometer technology has been developed. Achieving this technology has come a long way.
Electronic manometers have been used to operate air conditioners since the late 1970s. But it is only in the last 10 years that programmable electronic sensor technology has revolutionized the field.
Early electronic manometers suffered from the failure of sensors designed to withstand a pressure range of up to 200 kpa.
The electronic devices that could convert the signals received from these sensors were very limited, making it very difficult to use these sensors.
On the other hand, suitable sensors were also very fragile and prone to failure when passing current with maximum differential pressure.
For this reason, sensor failure was a very common occurrence when using these sensors.
Electronic manometer technology (digital manometer)
Unlike analog manometers, digital manometers do not use hydrostatic equilibrium (balancing liquids with water) to measure pressure.
Electronic manometer technology is such that digital manometers use a pressure sensor or converter to measure pressure.
Pressure converters convert the observed pressure levels into an electrical signal, and this signal is calculated to understand the amount of pressure.
Most technicians prefer to use digital manometers because they are easier to transport.
Digital manometers also have legible displays that help prevent misreading (which is common in analog manometers).
Another advantage of electronic manometers is that they can record data and transfer it to computers and mobile devices in various ways.
On the other hand, as mentioned earlier, some of the liquids used in traditional liquid manometers can be toxic, which is not the case with electronic manometers at all.
Advantages of using electronic manometers
There are several benefits to using electronic manometers.
The most important advantage of using electronic manometer technology is the possibility of calculating the differential pressure and equating it with the flow coefficients (KVS) stored in the database.
This feature allows the manometer to calculate and display the current in real time by performing high-speed calculations.
In addition, if the user is measuring with variable hole valves, a new position can be entered and the flow pressure manometer recalculated.
Advanced manometers such as AC6 are made using sensors with the most suitable pressure range and are protected by DSP protected technology.
This technology helps prevent sensors from malfunctioning due to overpressure. These devices have a very high resolution and accuracy.
For specialized advice on pressure and precision pressure instruments in the industry, as well as purchase advice, you can visit the pressure measurement page and use our communication channels.
Future developments of electronic manometers
Due to the technology of electronic manometers, manometers with a wide range of features are now available to engineers.
The most recent of these features is the ability to receive data related to automatic balance valves, which gives the user interesting possibilities to manage these valves.
These features are constantly evolving and major changes are taking place in this area.
Systems with variable volume and the use of variable speed pumps face new challenges for engineers.
For this reason, many systems with differential pressure control valves (DPVC) are being designed at key points in the system.
Engineers are required to be able to measure the pressure on these differential pressure control valves in order to obtain complete and dynamic information from the system.
This requires the design and construction of a manometer that can measure a maximum pressure of 65kpa.
In addition, the system must be able to measure the return current differential and based on that can control the pump power.
The best electronic manometers (digital)
Ease of use and portability are the reasons for the popularity of digital manometers. But what are the characteristics of the best manometers? This is a question that is often asked by engineers and technicians.
In the following, we name 3 digital manometer products of the index and mention its features for more familiarity.
1. SDMN 5 dual function manometer with two ports
This manometer is a durable and lightweight device for easy carrying. This device is designed to measure static, gas and differential pressure.
This manometer is capable of reading pressures between 60inWW to 60inWC (-150.0 mBar to 150.0 mBar). This manometer has the ability to measure accurate differential pressure due to having 2 ports.
When 2 hoses are connected to these 2 ports, it is possible to measure the pressure difference between these 2 hoses.
This manometer has a zero adjustment button, the ability to turn on and off and a magnet in the post to hold it steady.
2. Manometer Testo 510
The Testo 510 manometer is a good choice for a compact and portable digital sphygmomanometer.
It is easy to use and with the backlight on the screen, it is quite easy to read information on the screen in light and dark.
This manometer can be used to measure pressure between 0 and 40 inches of water column (0 to 100 bar).
It can also be measured in units of mmH20, PSI, mmHg and meters per second, or Feet Per Minute (FPM).
This manometer can be used to measure various types of pressure such as pressure drop, manifold pressure and external static pressure.