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What is a Differential Pressure Gauge? | Types & Applications

Pressure gauges are essential instruments in industrial settings, measuring and displaying the pressure within a system or machinery. These devices have significance for process monitoring and control, since they provide operational safety, efficiency, and lifespan. 

Pressure gauges provide real-time pressure measurements in a variety of industries, including chemical plants and power generation, as well as water treatment and HVAC systems, to help prevent equipment failures, optimise performance, and maintain regulatory compliance.

Working Principle of Differential Pressure Gauges

“At its fundamental level, a differential pressure gauge works with two pressure inputs: the high side (pressure) and the low side (reference pressure) rather than the absolute pressure in relation to a vacuum or atmospheric pressure.”

This difference is then transformed into a readable value, which is typically shown on a dial or digital screen. The gauge’s capacity to isolate and monitor this disparity allows for precise control over operations that require pressure balancing.

This distinct feature makes them indispensable in applications where pressure differential is a critical operational parameter. For example, they monitor filtration efficiency, flow rates, and liquid levels in tanks, providing critical information for ensuring optimal process conditions and equipment safety.

The Development and Trends in Pressure Measurement

The most recent types of pressure and differential pressure gauges integrate advanced features that improve accuracy, durability, and ease of use. Digital displays, remote monitoring capabilities through IoT integration, and smart diagnostic features are all key industry trends. 

These innovations enable better data gathering and analysis, predictive maintenance, and greater system control, resulting in increased production and less downtime. Indian and Global Pressure Gauge Manufacturers are also working to make these instruments more durable and resistant to severe industrial settings, ensuring reliability in adverse conditions.

Types of Differential Pressure Gauges

Differential pressure gauges are vital instruments for determining the pressure differential between two places in a system. They are classed into several varieties according to their operating mechanism, with each being best suited to a given use. Here is a closer look at these sorts.

1)  Mechanical differential pressure gauges

  • Diaphragm: Diaphragm type differential pressure gauges have a flexible diaphragm that deflects based on the pressure difference between its sides. The diaphragm’s movement is mechanically coupled to a pointer, allowing for direct measurement of the pressure differential. Diaphragm gauges are frequently employed due to their simplicity, reliability, and adaptability for low-pressure and corrosive fluids.
  • Piston: Piston-type gauges have a piston and a spring inside a cylinder. The differential pressure pushes the piston against the spring, and the displacement is converted into a pressure reading. These gauges are well-known for their longevity and are frequently used in applications with significant pressure differentials and pulsing pressures.
  • Bellows: Bellows gauges have a collapsible chamber that expands or contracts in response to pressure differentials. This movement is subsequently translated into a mechanical measurement. They are very excellent for low-pressure readings, with high sensitivity and accuracy.

Check Our Range of Mechanical Differential Pressure Gauges

2) Electronic Differential Pressure Gauges

  • Capacitive: Based on capacitance change with pressure, provide exceptional accuracy and stability. They are suited for a wide range of pressures and are commonly used in applications that necessitate precise control and monitoring, such as semiconductor production and laboratories.
  • Piezoresistive: Piezoresistive gauges make use of a piezoresistive element whose resistance changes in response to applied pressure. Piezoresistive gauges are well-known for their durability and precision, and they are widely utilised in the process and hydraulic sectors.
  • Magnetic: Magnetic differential pressure gauges use a magnetic coupling mechanism, in which the pressure difference induces movement in a magnetic element, which is then translated into a pressure reading. This non-contact measurement approach offers exceptional safety and is preferred in hazardous areas.

Check Our Range of Electrical Differential Pressure Gauges

3) Hybrid Differential Pressure Gauges

Hybrid gauges, which combine mechanical and electronic elements, are developed for specialised applications that require mechanical system durability as well as the precision and adaptability of electronic monitoring. 

These gauges frequently have digital displays, remote monitoring capabilities, and increased diagnostic functions, making them ideal for critical and sophisticated industrial applications where traditional gauges may not suffice.

The many varieties of differential pressure gauges meet a wide range of industrial requirements, guaranteeing that there is a gauge for practically any application. Whether it’s monitoring filter performance, fluid levels, or controlling process systems, the correct differential pressure gauge can give precise, dependable readings critical to operational efficiency and safety.

Check Our Range of Hybrid Differential Pressure Gauges

Applications in Industry – Expanding the Reach of Differential Pressure Gauges

Differential pressure gauges are used in a variety of industries, including oil and gas, aerospace, and defence, to ensure operating efficiency and safety. They monitor filtration, manage pumps, balance HVAC systems, and ensure sterile conditions in pharmaceutical and food processing plants. Their exact measurements contribute to system integrity and process optimisation. As technology improves, these gauges become smarter and more integrated, addressing the changing requirements of modern industry. 

To gain a better grasp of how differential pressure gauges fit into the larger context of pressure measurement equipment, see “A Complete Overview and Types of Pressure Gauges,” which delves deeper into the many types and capabilities of pressure gauges across applications.

  • Oil and Gas
  • Water Treatment
  • HVAC (Heating, Ventilation, and Air Conditioning)
  • Pharmaceutical
  • Food Processing
  • Aerospace
  • Defense

Future Developments in Differential Pressure Gauge Technology

  • Miniaturisation and Integration: Differential pressure gauges are expected to become more compact and integrated with other systems, making installation and monitoring easier in a variety of industrial applications.
  • Wireless Connectivity: With the rise of the Internet of Things (IoT), future pressure gauges may have wireless connectivity for real-time monitoring and data transmission, allowing remote monitoring and control.
  • Advanced Materials: Advancements in materials research may lead to the creation of differential pressure gauges with greater durability, corrosion resistance, and longevity, which is especially significant in severe settings.
  • Enhanced Accuracy and Precision: Continuous advances in sensor technology and calibration procedures are projected to result in increased pressure measurement accuracy and precision, hence improving differential pressure gauge reliability.
  • Smart Diagnostics and Predictive Maintenance: By combining AI and machine learning algorithms, differential pressure gauges may do self-diagnostics, detect anomalies, and predict maintenance requirements, decreasing downtime and improving performance.


Differential pressure gauge technology includes a wide range of options, from old mechanical gauges to current electronic and smart varieties. These gauges are essential in a variety of industries, giving critical measures for operations such as fluid flow and filtration. 

As the sector evolves, advancements in miniaturisation, wireless networking, and integration with AI and machine learning drive innovation. These advancements are expected to improve the accuracy, reliability, and efficiency of pressure measurement systems. 

Furthermore, with a growing emphasis on sustainability and energy efficiency, manufacturers are prioritising eco-friendly designs and resource-efficient manufacturing techniques.

As we look ahead, the ongoing growth of differential pressure gauge technology by the manufacturers around the world promises even higher precision, dependability, and intelligence, catering to a wide range of industrial applications while also contributing to environmental goals.

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How To Select And Use The Right Temperature Sensor

Temperature measuring is essential in both industrial and real-world applications. Precise temperature control in the industrial domain might make the difference between a flawless chemical synthesis and a costly error. In everyday life, think of the comfort of a warm, perfectly heated home.

We are fully familiar with the critical role of temperature measurements in everyday life and across many industries. Temperature measurement supports various aspects of our modern environment, from manufacturing operations to climate management. 

As a result, selecting the appropriate temperature sensor becomes an important aspect of temperature measurement. Throughout this post, we will discuss the most effective approach to selecting and using a suitable temperature sensor for your specific application. 

This post will cover all of the types of temperature sensors, their operating principles, benefits, limitations, temperature range, tolerance, accuracy, and interchangeability.

What is a temperature sensor?

A temperature sensor is just a thermometer that detects temperature and communicates the signal to computers or other temperature monitoring devices. It enables us to determine the temperature of our surroundings, as well as the temperature of machinery and equipment.

Different types of temperature sensors based on the working principle?

Let’s consider the working principle of the temperature sensing instruments. Temperature sensors of several types are commonly used, including:


Working principle of Thermocouples

Thermocouples are another popular choice for temperature sensors. These sensors work on the Seebeck effect, where two different metals joined at one end produce a voltage proportional to the temperature difference between the joined end and the open end. This voltage, known as thermoelectric voltage, is then used to determine temperature precisely.

Resistance Temperature Detectors (RTDs):

Working principle of RTD (Resistance Temperature Detector)

The RTD (Resistance Temperature Detector) is a popular choice for various industries for temperature measurement. It works on an easy principle: when the temperature rises, the resistance of a pure metal wire within it rises accordingly (this wire is typically made up of copper, nickel, or platinum, wrapped around a ceramic or glass core). Because of the linear relationship between resistance and temperature, RTDs are a popular choice for many industrial applications.


Working principle of Thermistor  

Thermistors are temperature-sensitive resistors that change their electrical resistance in response to temperature variations. NTC (Negative Temperature Coefficient) thermistors lose resistance as temperature rises, whereas PTC (Positive Temperature Coefficient) thermistors gain resistance. 

Because of its sensitivity and reliability, thermistors are invaluable for applications such as temperature monitoring and control due to this predictable and precise change in resistance. Thermistors are composed of ceramic materials. They exhibit a large difference in resistance to temperature.

Infrared Temperature Sensors:

(Working principle of Infrared Temperature Sensors)

Infrared temperature sensors work on the principle that all objects emit infrared radiation, and the amount of radiation emitted is proportional to their temperature. These sensors are made up of a lens and a detector that detects the infrared radiation emitted by the object being measured. This radiation then gets converted into an electrical signal by the detector. 

The sensor estimates the temperature of the object by examining the strength of this signal without the requirement for direct touch, giving a non-contact and highly accurate temperature measuring system that is suitable for a wide range of applications.

Each type of sensor has its own advantages and is suitable for specific applications based on factors like temperature range, accuracy, and cost.

What are the factors to consider when selecting a temperature sensor?

Suited for Industry applications

The selection of a temperature sensor in the confusing ground of industrial processes necessitates rigorous attention to technical aspects. A variety of crucial elements must be evaluated in order to enhance precision and performance. Every aspect, from temperature range and accuracy to response time and environmental resilience, is critical in ensuring that the proper sensor matches perfectly with the unique demands of your industrial application

As we delve into the technical complexities of temperature sensor selection, the following are the critical factors that guide the way to temperature measurement excellence in industrial settings:

Factors to consider before choosing the right temperature sensor for your industry-specific applications.

  • Temperature Range: Ensure that the sensor’s temperature range matches the temperature extremes in your application. Some sensors, such as thermocouples, have a wider range than others.
  • Accuracy: Determine the level of precision required. The accuracy of different sensors varies, so choose one that fits your unique measurement requirements.
  • Response Time: Consider the sensor’s ability to detect temperature changes in real time. Some applications necessitate quick response times.
  • Environmental Conditions: Examine the operating environment, taking into account conditions such as humidity, pressure, and the presence of corrosive substances, as they can all have an impact on sensor performance and lifespan.
  • Mounting and Installation: Determine whether the sensor is simple to install in your system. Some sensors may necessitate unique mounting configurations.
  • Calibration: Understand the calibration requirements and whether or not the sensor can be calibrated.
  • Cost: To determine the sensor’s total cost-effectiveness, compare its initial cost to its long-term advantages and accuracy.
  • Durability: In your industrial setting, consider the sensor’s durability and resilience to mechanical stress, vibration, and shock.
  • Output Signal: Different sensors provide different forms of output signals (analog, digital, and so on). Check that the output of the selected sensor is compatible with your control and monitoring systems.
  • Maintenance: Determine the sensor’s maintenance needs, such as how frequently it needs calibration or replacement.
  • Size and Form Factor: Determine whether the sensor’s size and shape are compatible with your equipment and application space.
  • Regulatory Compliance: Verify that the sensor complies with any industry-specific regulatory or certification criteria.

By delving into these technical complexities, you pave the way to temperature measurement excellence, guaranteeing that your chosen temperature sensor flawlessly matches with the particular requirements of your industrial application.

How to install and calibrate a temperature sensor

There are various steps to installing a temperature sensor in an industrial setting:

  1. Determine the Best Location: Select a sensor placement site that appropriately represents the temperature of the system or process under observation. Check that it is conveniently accessible for maintenance.
  2. Get the Mounting Surface Ready: Make certain that the mounting surface is clean, dry, and free of pollutants. This aids in the correct security of the sensor and provides accurate readings.
  3. Mounting the Sensor: Depending on the type of sensor, you may need to mount it in a specific way. In pipelines, for example, thermowells can store sensors, whereas surface-mounted sensors can be connected using adhesive or brackets.
  4. Wiring: Use industry-specific wiring standards to connect the sensor to the appropriate wire and junction box. To avoid electrical interference, ensure proper grounding and insulation.
  5. Calibration: Before using the sensor, calibrate it to ensure accurate temperature readings. This step is critical for ensuring measurement precision.
  6. Sealing: Depending on the application, sealing the sensor and its connections may be required to protect it from environmental elements such as moisture or dust.
  7. Testing: Perform extensive testing to ensure that the sensor is working properly. To verify accuracy, compare its readings to those of a trusted reference thermometer.
  8. Integration: Work with your control or monitoring system to integrate the sensor. Check for compatibility with the input needs of the system and configure it properly.
  9. Documentation: Keep thorough records of the installation, calibration, and performance of the sensor. This paperwork is critical for traceability and future upkeep.
  10. Regular Maintenance: Establish a maintenance program to ensure that the sensor continues to produce correct measurements. Examine for evidence of wear, damage, or drift.

By following these instructions, you can make sure that a temperature sensor is properly installed in your industrial environment, providing for accurate and dependable temperature monitoring that is crucial for your activities.

Calibration of the temperature sensor

Common Problems that occurs with Temperature Sensors in Industrial Settings:

Temperature sensors are critical precision monitors in all industrial settings, from oil and gas to nuclear. Apart from having a very simple design, and even after taking into account every aspect that hinders its performance, the temperature sensors also fall within the non-working zone, which reduces their accuracy. As we go deeper into the area of industrial sensor applications, it’s vital to understand the common problems that these critical instruments endure.

  • Sensor Drift
  • Wiring Faults
  • Contamination
  • Exposure to Harsh Environments

Navigating these adversaries is essential to ensure that our temperature sensors continue to serve as reliable custodians of precision in the demanding industrial landscape.

Also Read:- Industrial Applications for Thermocouples

How to troubleshoot temperature sensor problems

Even the most precisely calibrated temperature sensors can malfunction. Troubleshooting is a skill that allows us to identify and resolve problems. A systematic approach starts with a visual inspection, followed by a thorough examination of connections, environmental factors, and potential sources of interference. Regular calibration and maintenance are preventive measures to ensure uninterrupted, reliable sensor performance. With these troubleshooting aspects in hand, we can keep our sensors in mint condition.

  • Visual Inspection
  • Wiring and Connections
  • Environmental Factors
  • Interference
  • Drift


The study’s fundamental conclusion is that precision in temperature measurement within industrial processes is non-negotiable. When we think about the best temperature sensors for our specific industry or industrial application. Several factors must be considered, beginning with the temperature range, surrounding settings, and ending with the durability and measurement nature. When we have correctly estimated our priorities, the options for us to pick from become fairly minimal. Although your industrial application may necessitate a different temperature range, General Instruments Consortium stocks every form of temperature measuring sensor.

With a methodical approach to gauge selection that is specific to your individual industrial needs, you can provide your processes with the precision and dependability required for smooth operations.Choose your temperature gauge cautiously, and watch as precision becomes your constant ally in the fast-paced world of industrial operations. Contact Us or Email us for more information and quotes regarding products.

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Choosing the Right Thermocouple Sensor Configuration for Your Application

In the world of measuring extremely highs to freezing lows temperature, where accuracy is vital and dependability is non-negotiable, one instrument has repeatedly been shown to be the go-to solution: the thermocouple sensor. This concealed equipment, which typically resembles a basic construction with a coupled wire of different materials, holds the power to convert temperature into valuable data across various industries.

Consider a sensitive chemistry of industrial operations in which an engineer simultaneously analyses many chemical reactions. In this fast-paced company where macro-level accuracy is maintained and operated, thermocouple sensors work as oversight bodies, ensuring that each reaction and tank is appropriately kept at the desired temperature within narrow limits.

Their influence, however, is not limited to the chemical tanks and inside the shop floor only. These sensors are also used in large organisations to monitor the sensitive chemistry of industrial operations. It is used in nearly all industries: Power Generation, Mining, Oil/Gas, Pharmaceutical, Biotech, Cement, Paper, Glass, and many more.

Technical Brilliance: The Core Of Accurate Measurement

But why are thermocouple sensors the preferred option?

Its power comes from its capacity to read temperature using a basic yet clever scientific principle. When different metals come together, they produce unique electrical phenomena known as the Seebeck effect. The phenomenon causes a voltage to be generated, which indicates the temperature. This fundamental concept underpins thermocouple sensors’ adaptability, allowing them to work everywhere from the sky to medical facilities.

Geometry and Construction of Thermocouple Sensors:

At the heart of a thermocouple sensor lies a cleverly designed junction. This is when two separate metals come together to generate a measuring point. The thermocouple’s properties and ability to detect temperature fluctuations correctly are defined by the metals utilised.

The junctions may be grouped into several configurations, each with its own set of benefits.

The following are examples of thermocouple sensors based on the geometries:

  • Grounded Junction:  In this design, the two metals are physically linked, allowing for direct temperature measurement contact. It has quick response times but may be prone to corrosion owing to direct contact with the environment.
  • Ungrounded Junction:  The two metals are insulated from one other, lowering the danger of corrosion. However, due to the insulation, reaction times may be slightly slower.
  • Exposed Junction:  Only one of the metals is exposed to the environment in this design, protecting the other metal. It achieves a good blend of response time and durability.

Thermocouple Junction Design

Technical Advantages of Thermocouples:

Thermocouple sensors are among the finest temperature-measuring equipment in the industry due to the fundamental principle, Seebeck Effect, and functionality-friendly design alternatives. It offers significant physical benefits for application of temperature sensing across various processes and environments depending on the required parameters. And thermocouples technological advantages include:

  • Temperature Range:  Thermocouple sensors have an extraordinary working range, allowing them to endure temperatures ranging from freezing lows to blistering highs. Due to their adaptability, they are useful in a variety of industries, from monitoring the freezing depths of space to the burning heat of industrial furnaces.
  • Fast Response Time:  Owing to their lightweight design, thermocouples have a great ability to respond quickly to temperature changes. The sensor junction’s low mass guarantees that even little temperature changes can be detected quickly, making them excellent for operations needing real-time adjustments.
  • Durability and toughness:  Thermocouples are designed to withstand adverse conditions that might harm other sensors. Their resistance to mechanical stress, vibrations, and severe temperatures makes them reliable partners in industries such as manufacturing, where accuracy and dependability are essential.
  • Cost-Effectiveness:  Among temperature sensors, thermocouples stand out as cost-effective options that do not compromise precision. Their simple design and compatibility with a variety of materials contribute to their low cost without harming their capacity to produce exact temperature readings.

Also read: 4 Industrial Applications for Thermocouples

Thermocouple Sensors Applications Across Industries:

Thermocouple sensors demonstrate their extraordinary adaptability across a wide range of industries, leaving an obvious mark on each. Their dependability and precision have opened the way for applications that value precision and durability.

Here’s a look at how these concealed sensors impact different industries:

  • Industrial Sector: A critical instrument in manufacturing, HVAC systems, and energy generation, providing robustness and precise temperature measurements.
  • Food Industry:  Improving customer well-being by monitoring cooking, storage, and transportation temperatures.
  • Aircraft and automotive:  Surviving in the harsh environments of engines and aircraft components, optimising performance and assuring safety.
  • Medical Industry:  Medical Devices such as MRI scanners and sterilisation equipment are critical for patient care and safety.

Calibration and precision:

NIST Standards create stringent calibration criteria that serve as the foundation for thermocouple readings throughout sectors. This standardisation ensures that thermocouple temperature data meets worldwide accuracy criteria.

Furthermore, the search for precision extends to Compensation Techniques, with an emphasis on precision-enhancing practices such as cold junction compensation. These methods improve measurement accuracy by accounting for possible imperfections at the junction where the thermocouple wires link to the measuring equipment. Implementing these adjustment approaches improves accuracy and makes trustworthy temperature data a reality, supporting key alternatives.

Also read : Ultimate Guide to Selecting the Right Pressure Gauge

Future Trends and Innovations in Thermocouples Sensors:

As technology advances, the thermocouple sensor ecosystem develops, bringing new possibilities that promise to transform temperature measurement.

  • Wireless Thermocouples: The development of wireless technology has given temperature sensing new life. Wireless thermocouples are freeing sensors from cable restrictions, allowing for remote collection of information and real-time monitoring.
  • Integration of Nanotechnology: Nanomaterials are ready to bring in a new age for thermocouples. The incorporation of nanotechnology can improve thermocouple sensor sensitivity, reaction time, and durability. Nanomaterials with remarkable thermal characteristics, such as graphene and carbon nanotubes, can improve thermocouple performance. 


In a world where precision is prized, thermocouple sensors serve as unshakable monitors of temperature observation. It is one of the most suitable, effective, and affordable types of temperature measuring device. Their technological superiority continues to establish new standards, from the fundamental concepts that drive them to real-world applications of thermocouple sensors. With decades of experience in manufacturing temperature sensors and thermocouples, General Instruments Consortium can help you select the best thermocouple for your application standards and demands. As industries continue to push limits and technology advances, thermocouples remain trustworthy companions in our search for temperature-measuring precision, reliability, and understanding.

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How To Choose The Correct Pressure Switch For Your Application

Pressure switches are instruments present in a system where adequate pressure is an integral part of system operation. A pressure switch is activated when a predetermined pressure point is reached. The significance of pressure switches stems from their relevance in lowering the possibility of equipment or personnel hazards.

They are commonly used in commercial and residential settings to open or close an electrical switching element. High quality pressure switches have been demonstrated in worldwide onshore and offshore sectors for their accuracy, dependability, safety, and long product life cycle.

With so many different types of pressure switches on the market, selecting the right pressure switch for your application is critical. Selecting the wrong one can lead to system failure or even safety hazards.

In this blog, we will outline the steps and present to you a pressure switch selection guide to ensure that you choose the right pressure switch according to your application. 

The following factors should always be considered when choosing  the right  pressure switch.

  • Assess the process fluid type
  • Identify the apt pressure range according to your application.
  • Understand if the pressure switch can achieve your required setpoint 
  • Determine the working temperature 
  • Evaluate repeatability of pressure switches:
  • Compare the various types of pressure switches
  • Take into account the safety requirements and standards that apply to your industry

The following steps one must consider while chossing pressure switches:

  • Assess the process fluid type: 

The primary consideration while choosing the right pressure switch is the type of fluid used in the pressure switch. The material used must be compatible with the materials of the pressure switches, which means it must be resistant to common chemical and physical attacks that can be induced by the application material. 

Typical fluid types used with pressure switches are

  • Hydraulic oil
  • Turpentine
  • Petrol
  • Air
  • Water
  • Identify the apt pressure range according to your application:

After the fluid type, the most crucial consideration  is the pressure range. Determine that your pressure switch can not only handle your normal pressure range but also can also handle the pressure spikes in your application. Along with this, the type of pressure (vacuum or positive) must also be considered while choosing the pressure switch 

  • Understand if the pressure switch can achieve your required setpoint:

Setpoint constraints must be addressed while selecting a right pressure switch. There are particular setpoints related with pressure switches, regardless of the kind. It is also necessary to establish whether your application entails the use of dual set points.Dual set points are required by any application that needs to be notified if the pressure is lower & higher than a certain point.

  • Determine the working temperature:

When choosing the pressure switches, its effectiveness according to temperature must be given imoirtance. Usually, there is a datasheet that typically lists the temperature specifications that a particular pressure switch can withstand. Exceeding a switch’s stated temperature limitations can result in safety risks.

Nitrile butadiene rubber (NBR) is a preferred material to work with medium temperature, when the element used is air or hydraulic oil. However, when the medium is water, ethylene propylene diene monomer rubber (EPDM) is considered to be better material. Flurosilicone rubber is preferred for applications that operate on higher temperature. 

Also Read: Ultimate Guide to Selecting the Right Pressure Gauge

  • Evaluate repeatability of pressure switches:

The repeatability of the switches is their ability to offer the same setpoint time after time. Different styles of pressure switches have varied repeatability. Generally, electronic pressure switches tend to have better accuracies. 

  • Compare the various types of pressure switches:

There are several types of pressure switches available, each tailored for a unique use. Along with identifying the right type of pressure switch to be used, it is also necessary to assess whether the pressure switch requires further calibration such as tags, wall/pipe mount, metric labelling, factory set (XFS) etc based on the application.You must also ensure that the switch’s end connection is compatible with your application.

Some common types of pressure switches to choose from include:

  • Indicating Pressure Switches (Pressure Gauge with Switch)
  • Indicating Differential Pressure Switches (Differential Pressure Gauge with Switch)
  •  Blind Pressure Switch
  • Blind Differential ressure Switch

Also Read: 5 Detailed Applications for Pressure Sensors in Industry

  • Take into account the safety requirements and standards that apply to your industry:

In safety-critical applications, pressure switches that meet current industry standards and regulations are crucial. Look for gauges that have been authorised and, if necessary, are suitable for hazardous areas. This comprises both hazardous and industrial certifications such as explosion proof, non-incendive safety, boiler limit control approval, and so on. Determining which application is required varies according to the application of the switch in your industry.

Additionally, considerations such as the environment in which the pressure switch will be utilised should be taken into account to guarantee the safe operation of pressure switches. You must also examine what IP/NEMA ratings that you must meet. Pressure switch certifications such as UL, CSA, FM, CE, and others are available to improve the quality of pressure switches.

In conclusion, selecting the right pressure switches is critical for ensuring smoother operations. To assure quality and durability, choose a high quality instrumentation solution provider when choosing a pressure switches. Taking the effort to select the appropriate pressure switch for your application will result in improved performance. 

The experts at General Instruments Consortium can assist you in finding the right  pressure switch for your application.Contact us today to talk to one of our instrumentation expert.

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A Complete Overview and Types of Pressure Gauges

Pressure gauges are one of the most commonly encountered industrial instruments. It is not  possible for you to walk through the industrial site without encountering his instrument.


What are pressure Gauges?


Pressure gauges are instruments used to measure the pressure of liquid or gas. Many techniques and devices have been desired to measure pressure accurately. Traditionally pressure gauges were mechanical with an analogue device attached. However, today we have pressure gauges operating digitally also. 

In this blog, we will explore three commonly used pressure gauges in the industry today.

What Are The Types of Pressure Gauges?

  • Diaphragm pressure gauge:

What is a  diaphragm pressure gauge?

A diaphragm pressure gauge is a differential pressure gauge that uses a flexible membrane-like diaphragm to measure the pressure in a system. Because of the structure of the membrane, it is also referred to as a flexible membrane pressure gauge.

How does the diaphragm pressure gauge work?

In such kind of pressure gauge, there is a circular element (diaphragm) clamped made of steel or Inconel, welded between a pair of flange. The pressure deforms this diaphragm, translating into the pointer’s movement on the attached dial.  

 Application of pressure gauge:

Diaphragm pressure gauges are extremely useful for measuring low-pressure changes, even as low as 0.23psi.

Below is a list of the common application of diaphragm pressure gauge according to different scenarios.

  • Chemical and Power Plants
  • Fluid transport systems such as Pipelines
  • Laboratory
  • Hydraulic systems
  • Gas storage tank
  • Boiler
  • AC unit 
  • Medical equipment such as blood pressure monitoring gauges.

  • Bourdon Pressure Gauge:

What is a bourdon pressure gauge?

A bourdon pressure gauge uses a coiled shape tube to measure the pressure. Owing to the high-pressure range and high sensitivity to pressure changes, it is an ideal instrument to be used in industries that need real-time monitoring. This gauge is also relatively inexpensive and easy to use, making it a preferred choice of many industries.

How does the Bourdon pressure gauge work?

In such kind of pressure gauge, a semi-circular or coiled shape tube is opened to the atmosphere at one end. The pressure changes cause the tube to expand. The change is then translated to the pointer needle of the attached dial.

Application Of Bourdon Pressure Gauge

The Bourdon gauge has been in use for the last 100 years. It remains one of the standard pressure gauges. Below is a list of the common application of the bourdon pressure gauge according to different scenarios.

  • Cylinder & Pumps
  • Water treatment 
  • Power plants
  • HVAC systems
  • Automotive industry
  • Agriculture
  • Oxygen tanks and other medical equipment
  • Bellow Pressure Gauge:

What is a Bellow Pressure Gauge? 

The piston Pressure Gauge comprises thin metallic discs that expand or contract proportionately to the pressure applied.

How does the bellow pressure gauge work?

In the Bellow pressure gauge, one end of the instrument is sealed, and the other remains open. When pressure is applied on the closed part, the bellow moves, and the pointer attached moves to suggest the pressure. Two bellow pressure gauges are commonly used: single below pressure gauges and dual bellow pressure gauges. 

 Application of Bellow Pressure Gauge:

Bellow pressure gauges are suitable for measuring low to moderate pressure but are not recommended if an indicator is needed in high-pressure applications. Below is a list of the common application of bellow pressure gauges according to different scenarios.

  • Measure air in the system.
  • Measure oil in the system
  • Aerospace system 
  • Engine systems
  • Electrical interrupters

Choosing the correct pressure gauge instrument:

When you choose a pressure gauge, factors like the material’s durability according to the industry and the pressure type to be measured should be considered. Choosing the correct pressure gauge will be more straightforward if you select a manufacturer that provides you with varied pressure gauges.

You can choose different types of pressure gauges at General Instrument, a leading pressure gauge manufacturer In India. With GIC, you can find an apt instrument for measuring differential pressure. Being a  differential Pressure gauge manufacturer, we can manufacture customized pressure gauges according to your application.


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