Siemens SITRANS pressure transducers are compact single-range product. It is suitable for the measurement of absolute and gauge pressure. Stainless steel sensors and ceramics sensors are available in this series. This series of pressure transducers are used to measure the process pressure, absolute pressure, and hydrostatic pressure. The measured pressure will be transformed with these sensors into a 4-20-mA or 0-10-V-signal.
Danfoss offers a wide range of pressure transducers which is suitable for almost all kinds of industries. Including refrigeration, water booster pump application, hydraulic operations, and so on.
The DST P110 pressure sensor offers improved reliability, durability, and performance for applications in the refrigeration and air conditioning markets. It has a stainless-steel design and a hermetically sealed media interface. DST P110 series pressure transducers can withstand even the harshest application environments. The sensor runs on a new powerful electronics platform. It offers self-diagnostic capabilities and programmable features.
The AKS 32 and AKS 33 series pressure transmitters measure the pressure and convert the measured value into a standard signal. These models have been widely used in air Conditioning, Commercial Refrigeration, and industrial refrigeration sectors.
AKS 3000 series of absolute transmitters are high-level signal conditioned current output transmitters. It was developed to meet demands in the refrigeration industry.
Gems offer Chemical Vapor Deposition (CVD) pressure sensors that provide an effective method of overcoming the often severe limitations of other low-cost pressure measuring products. Thin Film Pressure Sensors and MMS Pressure Sensors are the other models.
The MMS pressure sensors utilize common semiconductor manufacturing techniques that allow for high proof pressure, good linearity, great thermal shock performance, and stability in a thin sensor package.
Thin Film Pressure Sensors Sputtered thin-film technology provides years of worry-free measurements under demanding real-world conditions. Sputtered metallic strain gauge sensors have terrific thermal properties and superior stability specifications. Ideal for harsh applications demanding long-term service where precise laboratory-type measurements are required
When choosing a transducer, some of the technical specifications are to be considered. Such as the environment you intend to use the sensor, type of measured pressure, climatic version, output signal, and measurement accuracy. We offer product in the below-mentioned specifications.
- Measure Range: 0 BAR to 1000 BAR
- Pressure Type: gauge (G)
- Overpressure: 150%FS
- Accuracy: 0.5%FS, 1.0%FS
- Output signal: 4-20mA(2-wire), 0-5V;1-5V;0.5-4.5V; 0-10V (3-wire)
- Supply: 12-36Vdc
- Compensated temperature range: -10~+80°C
- Storage temperature range: -40~+125°C
What is the use of Pressure sensors
In an industrial environment where fluids and gases are handled or transported at pressures higher than the atmospheric pressure. While handling, it is necessary to know the actual pressure levels. A pressure transducer is used to track and measure the pressure of certain fluid and gas systems. It includes pipes in power plants, water or air cutting equipment, hydraulic and pneumatic systems, boilers, and water pumps, and so on.
High-temperature transmitters are the key component for monitoring and controlling the pressure of a fluid. They usually have a small diaphragm that opens or closes according to the pressure levels that are preprogrammed. Due to their operation, they are often confused with pressure transmitters since they perform similar functions.
The pressure transducer or transmitter cannot control the pressure. They only measure the pressure variation as electrical outputs. It included milliamps, voltage, millivolt, resistance, etc.
Transducers or transmitters send output signals that are proportional to the pressure applied to them. They must be well installed and programmed to avoid errors in the connected devices. Those errors can affect the process’s accuracy and performance. For example, the discharge pressure of a booster pump, the water pressure balance in a chilled water circulation system, etc.
How does a Pressure sensor works
A pressure sensor is a device or element that performs the initial measurement as it senses the changes pressure in a physical variable. It is a device that makes physical contact with the variable being measured and provides a corresponding output signal that can be measured.
How does Pressure Transducer works
A pressure transducer is a device that converts one form of energy to another form. It provides an output quantity that has a specified relation with the input quantity. In the field of instrumentation, the output quantity is measured as an electrical or electronic signal. So, we can say that a transducer measures pressure, load, force, or other states and converts the reading into an electrical or electronic signal.
How does a Pressure Transmitter works
In process control, a pressure transmitter is a device that transmits a standard instrumentation signal representing a physical variable being measured. The standard electrical signals usually are 1-5 V or 4-20 mA or represents 0 – 100% of the variables measured. These transmitted signals are detected by a receiver.
A transmitter represents the physical variable but the initial measurement is performed by a sensor or transducer and if necessary a transducer converts this initial measurement into an electrical signal which is later amplified and standardized by the transmitter.
Types of Pressure Transducers
Apart from pressure transducer price there are many factors to be considered according to the applications they will have. Several factors help determine the type of equipment they need:
- Pressure: You must know the range of pressure to be measured. Especially the maximum, to have the best results in measurements and efficiency. The diaphragm, accessories, and welds must be compatible with the media where they will be installed.
- Both the ambient and process temperatures must be known to be compensated to avoid variations in the transducer reading.
- Environment: The environment where the transducers operate should also be closely examined. Factors such as humidity, temperature, and dust should consider when selecting the type of equipment.
Capacitance pressure transmitter
There are various kinds of pressure-sensing technologies or sensing principles capable of transducing pressure into a measurable and standardized electrical signal. The most common are strain gauge, capacitance pressure transducers, pressure potentiometric.
From our store, you will find a wide range of pressure transducers. Those will adapt to various industrial needs, with the best quality and price ratio.
Strain gauges pressure transducer uses when the pressure range is low and to measure differential pressure. They can measure up to 1,400 bar and operate at temperatures up to 500 ° C, with an accuracy that varies between 0.1 and 0.25%. The pressure trainers have been designed for use in low vacuum research. There are models to measure absolute, gauge, or differential pressure. They can be found in various ranges up to 700 bar and can operate at very high temperatures.
Resonant wires pressure transducers have a wire held by a static member at one end and by the sensing diaphragm at the other end. A change in the pressure of the process includes the tension of the cable. In turn, modifies the frequency of resonance. They allow gauge pressures up to 420 bar with high precision and are the most versatile on the market.
Potentiometric pressure transducers provide a simple method. They are the smallest and can be installed in very tight spaces, and they are the most economical models. They can detect pressures of up to 420 bar and have good precision. They are the ones that environmental and temperature variations can most influence.
Types and Operations
According to their operation, four different types of sensors are distinguished. Those are Resistive, Piezoresistive, Capacitive, Piezoelectric,etc
Micro Differential Pressure transmitter
The activity with resistive pressure sensors base is on the variation of the resistance by the deformation as a process of the pressure. This degree attraction of the conductor will leads to the increase the length and reduces the section surface. That causes a rise in electrical resistance since the specific resistance remains constant.
A base body uses to form this operational attainable. That body features a deformation during a controlled manner. It subjected to pressure and typically consists of an agent membrane in one amongst its components.
During a pressure electrical device sensing element, the deformation worth measures with meander-type metallic electrical conductors. These perform as strain gauges, typically situated within the growth space and also the upset space.
The piezo resistive pressure sensors of a pressure transmitter operate by an analogous principle of resistive sensors. They disagree by mistreatment semiconductors like strain gauges. These gauges change variations in specific resistance because of deformation. In these, the electrical resistance varies proportionately with the actual resistance. The metallic tapes may be placed in any material. The semiconductors incorporate as microstructures within the membrane.
Types in terms of pressure measurements
Pressure sensors are also classified in terms of the type of pressure measurements. They gauge any device operates as a result of the pressuring-sensing technology. During this regard, there are three ways to measure pressure: differential, absolute, and gauge.
Differential Pressure Transducer
Differential Pressure transducer
Differential pressure transducers are used in the industrial field to determine the pressure difference between two different points. These transducers evaluate the pressure through a process known as inferential measurement. This measuring method calculates the pressure or particular variable by measuring other variable which makes the calculation of pressure much easier.
According to this, absolute pressure and gauge pressure can also be considered as differential pressure. The differential pressure transducers are mostly used in areas where the flow rate has to be calculated.
Absolute or Vacuum Pressure Transducer
The absolute pressure transducer measures the pressure that is completely in an ideal vacuum with no other products. For this type of pressure measurement, the reference point is absolute zero. Hence, the comparison according to the pressure change is out of question. As this pressure transducer does not have connection with any external system, the pressure measurement is not affected by any atmospheric pressure changes or any other factors. Absolute pressure transducer is widely used in superior industrial applications like vacuum pumps, liquid pressure calculation, industrial packaging, and process management. Also, for applications like measuring device measurements for weather.
Pressure transmitters are used in a large variety of industrial and residential sectors for various pressure determining purposes. Numerous industries use pressure-sensitive transportation and storage devices to keep up optimum product conditions, which should be accurately monitored to make sure safe delivery and ultimate application. Laboratories conjointly use pressure sensors to live the relative pressure of vacuum chambers to the atmosphere.
The pressure transmitter is also used in the filtration system for monitoring. Generally, the liquid and gases that pass through the filtration system includes dust particles which will lead to obstruction to the flow. Some applications cannot allow the passage of contaminants through the filtration system. In such systems, pressure transmitter can be used to detect the gradual pressure drop due to the sediments in the system.
Application of pressure transducer in Variable Frequency Drive
Absolute Pressure tranducer
Variable frequency drives, or VFDs, controls the electrical motor by modifying the input frequency to the electrical motor. Pressure transducers have a vital role in this method. Pressure transducers monitor the pressure at the pump outlet and send electrical variable signals to the VFD to control the speed as preprogrammed.
Pressure transducers are used for VFD speed management in machinery and industrial plant automation.
In order to be an effective and efficient tool for machine automation, pressure transducers must be able to work with a variety of media.