A Complete Guide To Transmitter And Its Types

Transmitters are level-measuring devices and are highly used in the processing industry. In the process control world, the device helps you to measure the level of liquid which is crucial in maintaining accuracy. Because if there is any inaccuracy in the measurement, it may cause severe damage.

The device plays a crucial role in converting the signal produced by the sensor into the instrumentation signal. It is considered the standard signal that represents the measurement of the process variable and how to control it. 

There are many other measuring instruments, but transmitters help you to get the best results. Most plants and processing industries need transmitters to check the level of liquids and other materials. Besides liquids, you can use this instrument to measure the level of solids.

Types of transmitters

The instrument has spread its roots by introducing its various types. Each type works differently and has its specific usage. The selection of transmitters depends on the types of work you are doing at your plants or in the industry. 

If you want to know about those types and how they work, keep reading this content and learn more about these quality instruments. 

Level transmitter

The level transmitter is one of the level measurement devices that help you measure the continuous level measurement. Within this transmitter, you can measure a range of materials. Whether you want to measure the liquid media or the solid in bulk, you can use this instrument. 

The high-quality instrument works well and has many valuable applications. It is one kind of sensor having an electrical transmission output. The transmitter helps indicate powder, liquid, continuous level measurement, and point level detection of bulk liquids and solids. 

Working principle of level transmitters

Level transmitters work depending on the media you want to measure. There are multiple types of this transmitter performig their specific function. Whatever the type of transmitters you are using, every device has a similar working principle.

  • There is a fluid with its pressure head
  • The average weight of the fluid 
  • The position of liquid in the tank 

Different kinds of level transmitter 

  • Hydrostatic level transmitter 
  • Magnetic level transmitter 
  • Ultrasonic level transmitter 
  • Liquid level transmitter 
  • Radara Fill level transmitter 

Features of level transmitters

The level transmitter has many quality features besides transmitter usage applications. You can check the list of quality features. 

  • The level transmitter works on the Radar principle and uses microwave emissions. These help you to measure the fill level of the liquid accurately. 
  • The device works on measurement technology and gives you accurate results.
  • It helps you to measure the liquid storage capacity of the tank correctly. 
  • The transmitter type is easy to install and maintain; this feature will give you quick running with minimum downtime.
  • Besides measurement, accuracy and reliability are the utmost parts of this quality instrument 
  • You can get this quality instrument at a low price. 
  • It is one of the valuable instruments that are easy to install and maintain 

Usage applications of level transmitter

The type of transmitter has various usage applications. Some of them are below to indicate the transmitter type used for measuring.

  • Chemicals 
  • Food and beverages 
  • Water treatment
  • Power generation 
  • Petrochemicals 
  • Gas industry 
  • Material Handling 

What functions level transmitter perform? 

In industries, you need to measure the media level in the containers. The containers may be small or big enough that you find it difficult to verbally guess the exact level of the liquid or solid materials. 

Continuous and point-off level transmitters are the two elementary types working in the level transmitter. The constant level transmitter uses to find the liquid height in the containers and is a real-time monitor of the liquid media. 

In contrast to the continuous transmitter, the point-off transmitter usually considers two points, one is low, and the second is high. The instrument’s sensor will signal an alarm when the containers meet these points. You can then take the necessary precautions accordingly. 

Differential pressure transmitter 

As the name indicates, the Differential pressure transmitter is highly suitable for measuring the two opposite pressures in one pipe. The device is a vital industrial requirement as it differentiates between low and high sides pressure. After sensing the difference, the device gives an output signal representing the pressure difference. 

Working principle of differential pressure transmitter 

We have learned little about the new transmitter type, so it’s time to know how the instrument works. The device uses two kinds of elements to measure the pressure of a media. The most famous elements are primary and secondary elements. 

The primary element in the transmitter produces a difference when there is any pressure on the pipe. The primary components include venturi tubes, orifice plates, flow nozzles, laminar flow, pitot tubes, and wedge elements. 

In contrast to the primary elements, the secondary feature works differently. It measures the difference that the primary components produce. Due to their different pressure measuring criteria, the primary factors are the high side, while the second is the low side.

The device uses different pressure sensors like vibrating wires, strain gauges, and capacitance. These sensors help produce the pressure signal and send them to other areas of the device. 

There is a control system in the devices where the device displays the output of the whole process. These signals are sent to the electronic housing and processed there. After processing, they convert into the output as current or voltage. 

Where does the differential pressure transmitter work? 

It is the type of transmitter that has its uses at domestic and industrial levels. Moreover, it has vast usage applications, and those who want to measure the pressure difference prefer this transmitter. If we elaborate on its uses, the transmitter type also includes, 

  • Filter monitoring 
  • In some cases help in measuring the liquid level. 
  • Drill head torque monitoring 
  • It helps in measuring the filters if there is any clogging in the filters 
  • Gas pressure monitoring 
  • Liquid pump pressure monitoring 
  • For the detection of water pipe leakage 
  • Use for getting the raw readings from transmitter transducers 

Construction of differential pressure transmitter 

When it comes to constructing a pressure transmitter, there are three essential construction elements. These main components of the transmitter are 

  • Electronic circuit 
  • Pressure sensing elements 
  • 4-20mA current transmitter 

1- Pressure sensing elements

At the bottom of this pressure transmitter, two pressure-sensing elements are present. These elements are low and high sensors. Between these two sensing elements, a diaphragm is present.

The diaphragm will deflect when pressure applies between these two sensors. Ultimately, strain gauge and capacitance sensor transform deflection into electrical signals. 

2- Electronic circuit 

Electronic circuits are essential in converting the low voltage current to high. The electrical signals from pressure sensors are low voltage, with measurements in milli volts. The electronic circuit amplifies these signals and converts them into 4-20mA. The system is present on the upper side of the transmitter. 

4-20mA current transmitter

The element is used to display the pressure or to apply the pressure to other aspects like PLC and closed loop controller. It helps convert the voltage to the lower range of 4mA and the upper range of 20mA. At last, the differential pressure transforms into the range of 4-20mA. 

Features of differential pressure transmitter 

  • Maintains efficient and safe processing in industries 
  • The device is reliable and gives the accurate results 
  • Aids in monitoring and controlling the pressure flow 
  • Easy to install and maintain 
  • This device is cheap, and you don’t need to invest too much money. 
  • These devices have good durability and can run for a longer time 
  • The device is available in multiple sizes and styles depending on the application’s need. 
  • Easy to integrate with existing systems 

Pressure transmitter 

A pressure transmitter is a liquid-measuring mechanical device. It measures the liquid’s or gas’s expansion force and converts it into an electrical output. A transducer in the device converts the pressure into electrical signals. 

The pressure transmitter measures a range of pressures, like absolute, gauge, and differential pressure. This quality instrument can measure the pressure level in various applications. 

The working mechanism of the pressure transmitter 

There are many pressure transmitters, and their way of working is almost the same. The device measures the pressure and converts it into analog electric signals. The three main components work together in the pressure transmitter to run the system.

  • Pressure sensor 
  • Measuring circuits 
  • Process connection 

The pressure transmitter helps inform the users that something needs attention. When pressure is on the pressure transmitter, it acts as the force on the diaphragm—the value transfers in the form of electrical signals to other areas.

Types of pressure transmitter 

The pressure transmitter has various types depending on the kind of work they do. To elaborate on the topic and give you detailed information about the types of pressure transmitters, we have made a list of their significant kinds. Let’s dig it a bit and know to learn about them.

  • Differential pressure transmitter 
  • Gauge pressure transmitter 
  • Multi-variable pressure transmitter 
  • Absolute transmitter 
  • Smart pressure transmitter 
  • Fixed pressure transmitter 

Purpose of pressure transmitter 

The transmitter type is highly in use in various industries. They have their use in the maritime sector because, in this sector, everything revolves around liability and efficiency. Their usage varies according to the type of transmitter. 

Despite the maritime sector, the transmitter is suitable for many cases. Despite the naval industry, the transmitter is ideal for many cases. 

Features of pressure transmitter 

There is rarely an instrument without any quality feature. All the devices have their own features list. Similarly, the pressure transmitter also has a range of specifications that make it highly demanded and the most favorite quality instrument. 

  • The device is highly reliable and gives the accurate results 
  • It can accurately measure the expansion force of liquids and gases
  • Easy to handle and install 
  • You can get this quality instrument at reasonable prices 
  • It has good durability and will not get any damage to its quality 
  • Highly effective in giving the consistent and accurate output 

What is the accuracy level of the pressure transmitter? 

The accuracy level of the pressure transmitter has increased over time and is continuously improving. Regardless of the type and project you are using the device, the transmitter has important demand features. The features are hysteresis, linearity, and repeatability. 

Most of the time, the manufacturers consider these features a single one and try to incorporate them into their devices. The device’s accuracy helps you to use this quality instrument with other devices. 

Usage applications of pressure transmitter 

The transmitter has daily basis uses in a wide range of applications. Moreover, the device has many other uses in different sectors.

  • Offshore drilling and oil exploration uses this quality instrument to measure the differential value ranges between interior and exterior pressure. 
  • The instrument is also suitable for on-shore purposes such as petrochemicals, gas, and chemical measurements.
  • It has a vast range of uses in maintaining the optimal product condition 
  • It is highly suitable for maintaining the storage and transportation containers’ condition. 

Functions of pressure transmitters in the water industry 

On an industrial scale, the transmitter uses to measure the water level. The device ensures the ongoing system is reliable, high-performance, and stable. 

Moreover, the transmitter’s sensors help ensure quality control and establish safety protection in the water treatment and wastewater treatment processes. Furthermore, it helps in measuring the fluid level in the processing industry. 

Classification of transmitters

We know you are curious to get the missive information about this quality instrument. We are also keen to give you all the essential information about this instrument and help you get. The transmitters classified into two main categories, and you can see the best one below.  

Although there are two categories of transmitters, the instrument has many types. After exploring the types of transmitters, we will now disclose the classes. Keep reading this knowledge article and choose the one that better suits your needs of the instrument are 

Electronic transmitters 

Multiple wires make their group in this transmission type, providing the transmission power. These transmitters may have 2-wires, 3-wires, and 4-wires. 

Pneumatic transmitters 

These transmitters give the output in the form of pneumatic signals. These transmitters are primarily in use in industrial plants. 

Analog transmitters 

They are electronic and represent a physical measurement. Moreover, it uses an analog signal standard to give the information. 

Digital transmitters 

Digital transmitters use digital signals to communicate and display the output. These signals the use for better communication. 

Applications of transmitters 

On a commercial level, you need to measure the media used in the industry. So, the need for myriad applications of transmitters is unlimited. These transmitters have significant uses in the processing industries. 

Go down and explore what materials you can use for this quality instrument. You can use this device in multiple applications. 

  • It checks the water level.
  • The device is highly suitable for measuring the level of viscous fluid 
  • If you want to measure the fuel level; it is one of the best devices for use
  • It is beneficial to get exact measurements of bulk solids and powders 
  • Best for checking the ratio of gases 

Where to get these quality instruments? 

We have yet to learn about transmitters and their types. But the question that hits your mind is where to get these top-notch instruments. ICS Pakistan is one of the quality products suppliers in the instrumentation industry. 

We are the best product-delivering company that meets your demands and satisfies you. Our products are available at low cost and will not burden your pocket. We claim to be the leading market supplier with our highly customized customer services. 

ICS Pakistan products that are easy to install and maintain. Also, offer to help you throughout the installation process. We are always keen to solve your problems if it happens during the maintenance or installation. 

We have the best transmitter that gives you accurate and reliable results. As your needs and requirements change, we introduce a variety of transmitters to assist you in your tasks. We offer you a range of equipment compatible with your industrial control system. 

If you want to get the complete history of the instrument, please let us know, and we will assist you in getting the correct application for your industrial purposes. Our quality instruments will remain used for many years while maintaining their functionality. 

Final words 

Over time, everyone looks for the best and wants accurate results for their stock. This quality transmitter comes in various shapes and types. You can use a wide range of transmitters if you have the material in bulk, whether liquid or solid. 

Whether you want the transmitter for measuring the solid, liquid, or gas levels on an industrial or commercial grade, you can get the desired one. We have the best-measuring devices that give you quality and reliable results.

You can easily install these technical instruments. They are non-corrosive and will not damage easily. You can get them all at a reasonable price if you buy level, differential, and pressure transmitters.

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