Thursday 28 July 2011
Electromagnetic Flow Meters Detector
Sunday 8 May 2011
All you wanted to know about Fiber Optic Sensors
The fundamental characteristic of all fiber optic sensors is that they depend on some optical properties, such as intensity, phase, state of polarization and wavelength, to be modulated by measurands. Measurands could be pressure, temperature, electromagnetic field or displacement. All fiber optic sensors have an optical element that is sensing these property changes. For most sensors, this element is the optical fiber itself or a non-fiber optical element.
Optical fibers can be used as sensors to measure strain, temperature, pressure and other quantities by modifying a fiber so that the quantity to be measured modulates the intensity, phase, polarization, wavelength or transit time of light in the fiber. Sensors that vary the intensity of light are the simplest, since only a simple source and detector are required. A particularly useful feature of intrinsic fiber optic sensors is that they can, if required, provide distributed sensing over very large distances.
Fiber optic sensors are ideal for harsh conditions: high vibration, extreme heat, and wet, explosive, or corrosive environments. In confined areas, the flexible fibers can be positioned precisely.
Some extreme environment has no choice but Fiber Optic Sensors. This kind of applications include high temperature, immersion into chemical reagents, radioactive rays factories and so on. The fiber optic sensor's resistant to this type of harsh environment is extremely important.
Azbil north america is an leading company to provide the industrial products like fiber optic sensors and many control products. Learn more about fiber optic sensors, Process Controllers, Liquid Level Sensors and Mass Flow Sensor - for sale visit company web site.
Optical fibers can be used as sensors to measure strain, temperature, pressure and other quantities by modifying a fiber so that the quantity to be measured modulates the intensity, phase, polarization, wavelength or transit time of light in the fiber. Sensors that vary the intensity of light are the simplest, since only a simple source and detector are required. A particularly useful feature of intrinsic fiber optic sensors is that they can, if required, provide distributed sensing over very large distances.
Fiber optic sensors are ideal for harsh conditions: high vibration, extreme heat, and wet, explosive, or corrosive environments. In confined areas, the flexible fibers can be positioned precisely.
Some extreme environment has no choice but Fiber Optic Sensors. This kind of applications include high temperature, immersion into chemical reagents, radioactive rays factories and so on. The fiber optic sensor's resistant to this type of harsh environment is extremely important.
Azbil north america is an leading company to provide the industrial products like fiber optic sensors and many control products. Learn more about fiber optic sensors, Process Controllers, Liquid Level Sensors and Mass Flow Sensor - for sale visit company web site.
Monday 18 April 2011
Liquid Level Sensor - An Effective Device For Detection
The Liquid level sensors can be used to detect the level of liquid and the interfaces on the liquids. The interfaces can be liquids and solids or oil and water. The sensor can be called as integrated system or transducer.
Liquid sensor is very important especially for industrial refrigeration system. The sensors can be used for many purposes such as detecting the level of liquids in a tank and many more. The level of liquids can be detected using the monitor which is operated continuously or operated at certain points to follow when the alarms trigger. Commonly we can see the light indicator or LCD monitor which let us know the level of liquid.
You might even find that some refrigeration systems require the use of two level sensors. Usually, you can see industrial refrigeration systems come with a condenser, two compressors, two evaporators, two expansion devices, a level sensor for liquid, and also a phase separator. All of them are connected in a special order. The refrigeration systems use level sensor for liquid to know the liquid level from the signal sent by the sensor.
It is much recommended to have the liquid level sensor especially if your job requires having this device. You will surely able to detect the liquid level of an object easily without examining by your self. By having this sensor your job will surely easier since you only need to monitor the liquid level from the light indicator or from the screen.
Check out what kind of sensor which you need the most since you might see several models of sensors that can be different in usage. Find out the right sensor by examining what kind of sensor which can be good for your need. It is possible to find the liquid level sensor at very affordable price since many of the sensors are made to meet the economic value. The sensors are also very easy to use and can surely make your job a lot easier.
Article Directory Source: http://www.articlerich.com/profile/Pamela-G--Grizzle/93786
By: Pamela G. Grizzle
Liquid sensor is very important especially for industrial refrigeration system. The sensors can be used for many purposes such as detecting the level of liquids in a tank and many more. The level of liquids can be detected using the monitor which is operated continuously or operated at certain points to follow when the alarms trigger. Commonly we can see the light indicator or LCD monitor which let us know the level of liquid.
You might even find that some refrigeration systems require the use of two level sensors. Usually, you can see industrial refrigeration systems come with a condenser, two compressors, two evaporators, two expansion devices, a level sensor for liquid, and also a phase separator. All of them are connected in a special order. The refrigeration systems use level sensor for liquid to know the liquid level from the signal sent by the sensor.
It is much recommended to have the liquid level sensor especially if your job requires having this device. You will surely able to detect the liquid level of an object easily without examining by your self. By having this sensor your job will surely easier since you only need to monitor the liquid level from the light indicator or from the screen.
Check out what kind of sensor which you need the most since you might see several models of sensors that can be different in usage. Find out the right sensor by examining what kind of sensor which can be good for your need. It is possible to find the liquid level sensor at very affordable price since many of the sensors are made to meet the economic value. The sensors are also very easy to use and can surely make your job a lot easier.
Article Directory Source: http://www.articlerich.com/profile/Pamela-G--Grizzle/93786
By: Pamela G. Grizzle
Tuesday 5 April 2011
Temperature Controllers for Domestic and Industrial Purposes
The temperature controllers can be introduced as one of the important inventions of modern technology. Thanks to the controllers, now we have the chance to control our domestic and industrial temperature in order to meet with our comfort and requirements. Therefore, we have the opportunity to continue with our day to day activities though it is a sunny or a cloudy day.
The air conditioner can be introduced as a temperature controller which uses at domestic and industrial purposes. However, at the industrial automation segment these air conditioners will work with an AHU and a chiller. Mostly, these two components are stored at one room, and it can control all the air-conditioning system at the factory premises. Therefore, these AHU and chiller have a great value for the industrial world.
In addition to that, the industrial personals need to keep certain machines at controller temperature. Therefore, they have to use these special temperature controllers to keep the said machines under the required conditions. Furthermore, these controllers are very much essential to justify the actual temperature of any machine and heat of the surrounding area. So the machine operators and the industrial engineers can work efficiently to make the best productive use from the machines.
However, if you refer to the market, you may find lots of temperature controller models are available in the industry. So you must be wise enough to select what the best temperature controller according to your requirement and the budget. It can make you really comfortable on your industrial business, and you will never be disappointed about the controller which you used at your industrial premises or the air conditioner which you use at your domestic purpose. So, the choice is in your hand to get the best valued product for your hard cash, and you can get the best results accordingly.
Article Source: http://EzineArticles.com/?expert=Thomas_J_Scott
By Thomas J Scott
The air conditioner can be introduced as a temperature controller which uses at domestic and industrial purposes. However, at the industrial automation segment these air conditioners will work with an AHU and a chiller. Mostly, these two components are stored at one room, and it can control all the air-conditioning system at the factory premises. Therefore, these AHU and chiller have a great value for the industrial world.
In addition to that, the industrial personals need to keep certain machines at controller temperature. Therefore, they have to use these special temperature controllers to keep the said machines under the required conditions. Furthermore, these controllers are very much essential to justify the actual temperature of any machine and heat of the surrounding area. So the machine operators and the industrial engineers can work efficiently to make the best productive use from the machines.
However, if you refer to the market, you may find lots of temperature controller models are available in the industry. So you must be wise enough to select what the best temperature controller according to your requirement and the budget. It can make you really comfortable on your industrial business, and you will never be disappointed about the controller which you used at your industrial premises or the air conditioner which you use at your domestic purpose. So, the choice is in your hand to get the best valued product for your hard cash, and you can get the best results accordingly.
Article Source: http://EzineArticles.com/?expert=Thomas_J_Scott
By Thomas J Scott
Monday 4 April 2011
Considerations When Selecting a Differential Pressure Sensor
Important considerations when selecting a differential pressure sensor are presented. These include the highest level of pressure and the range of differential pressures that the sensor can take. First of all, this particular device, which may also be a differential pressure transmitter, has the task of measuring the difference between two or more pressures. The value is often utilized as input for a process feedback system to make sure that the process is running within the desired range of parameters. An important consideration when choosing this kind of device is to avoid the confusion about the pressure ratings. Because the measured pressure is the difference between two values, this is relatively small compared to gauge pressure or absolute pressure. Therefore, there is the danger of exposing the product to too much pressure if the expected differential pressure is utilized as basis for determining the ratings of the differential pressure sensor to be purchased.
There is also the possibility that the pressure that would be exerted on the sensing diaphragm of the differential pressure sensor will not be even throughout the length of this device. The uneven distribution of the stress can result in a modification of the analog output signal if the mechanical configuration of the sensor is not designed to handle this type of stress. The skewed distribution of the pressure is likely to offset the sensing diaphragm so that it would become off-center from its previous location. The uneven distribution of forces on the sensing diaphragm can actually affect the whole sensor because this particular part is connected to several other components.
Some of the sensors that could be affected by uneven pressure are those that have thin and fragile isolation membranes at both sides of the sensing diaphragm. The potential problem is that the volume of the oil that is found inside the transducer can increase or decrease in size depending on the temperature controllers. To avoid this problem, the design of the isolation membranes could be adjusted in such a way that the thermal expansion or contraction of the oil will not affect the sensing diaphragm too much. Meanwhile, another way to avoid the above problem is to have dry transducers, such as the Keller pressure sensors. Because the temperature has less effect on solids, these sensors are more stable although they are not completely free from the changes caused by temperature.
Article Source: http://EzineArticles.com/?expert=Gavin_Cruise
There is also the possibility that the pressure that would be exerted on the sensing diaphragm of the differential pressure sensor will not be even throughout the length of this device. The uneven distribution of the stress can result in a modification of the analog output signal if the mechanical configuration of the sensor is not designed to handle this type of stress. The skewed distribution of the pressure is likely to offset the sensing diaphragm so that it would become off-center from its previous location. The uneven distribution of forces on the sensing diaphragm can actually affect the whole sensor because this particular part is connected to several other components.
Some of the sensors that could be affected by uneven pressure are those that have thin and fragile isolation membranes at both sides of the sensing diaphragm. The potential problem is that the volume of the oil that is found inside the transducer can increase or decrease in size depending on the temperature controllers. To avoid this problem, the design of the isolation membranes could be adjusted in such a way that the thermal expansion or contraction of the oil will not affect the sensing diaphragm too much. Meanwhile, another way to avoid the above problem is to have dry transducers, such as the Keller pressure sensors. Because the temperature has less effect on solids, these sensors are more stable although they are not completely free from the changes caused by temperature.
Article Source: http://EzineArticles.com/?expert=Gavin_Cruise
Wednesday 23 March 2011
What to Look for in a Differential Pressure Transmitter
When looking for a differential transmitter and liquid leak detection, one of the things that have to be specified is the minimum voltage that is required. However, take note that if there is a load resistance, this will cause a reduction in the voltage across the pressure transmitter. You will need to determine the voltage drop across the load resistance and subtract this from the voltage that you get from your power source. On the other hand, it is also essential to make sure that the actual voltage applied across the pressure transmitter will not surpass the maximum allowable value to prevent damage to the device. Even a small overvoltage can cause certain parts of the transmitter to overheat and degrade its performance.
When looking for a differential pressure transmitter sensor, it is essential to check the manufacturer's technical data. With regards to the specified voltage, it is important to note that some manufacturers will indicate the voltage for the mains circuit while others will point out the needed voltage across the pressure transmitter itself. Other manufacturers will provide in their product data sheets a load diagram that will specify the allowable region of operation for a certain load and the voltage of the power source. Still another vital factor to look into when choosing your transmitter is the pressure reference. A common configuration is the vented gauge pressure transmitter, which permits the external atmospheric pressure to be applied on the negative side of the sensing diaphragm through vented hole or cable. Thus, the pressure measured is always in reference to the ambient air pressure. One example of a pressure transmitter is the Rosemont transmitter, which has been found to remain stable even after installation for five years.
Article Source: http://EzineArticles.com/?expert=Gavin_Cruise
By Gavin Cruise
When looking for a differential pressure transmitter sensor, it is essential to check the manufacturer's technical data. With regards to the specified voltage, it is important to note that some manufacturers will indicate the voltage for the mains circuit while others will point out the needed voltage across the pressure transmitter itself. Other manufacturers will provide in their product data sheets a load diagram that will specify the allowable region of operation for a certain load and the voltage of the power source. Still another vital factor to look into when choosing your transmitter is the pressure reference. A common configuration is the vented gauge pressure transmitter, which permits the external atmospheric pressure to be applied on the negative side of the sensing diaphragm through vented hole or cable. Thus, the pressure measured is always in reference to the ambient air pressure. One example of a pressure transmitter is the Rosemont transmitter, which has been found to remain stable even after installation for five years.
Article Source: http://EzineArticles.com/?expert=Gavin_Cruise
By Gavin Cruise
Monday 14 March 2011
Electromagnetic Flow Meters - Mass Flow Meters, Liquid Leak Detection
Have you ever needed to test the flow rate of a fluid, but there was no flow meter installed? At times like that, a portable flow meter is extremely useful. A portable flow meter can still measure the flow rate of a fluid with accuracy, but is portable, so one can move it around and test multiple locations. They are made portable because the transducers small and light enough to hold in one hand. Ultrasonic signals in gas flow meters are used because they are non-invasive, that is they do not touch the fluid being measured. They are created to be able to measure many types of fluids, such as oxygen, steam, or diesel. This article will explain the usefulness of a portable ultrasonic gas flow meter.
Portable ultrasonic gas flow meters are usually light enough for someone to hold in one hand. This allows for easy transportation, and easy measurements of multiple locations. The main reason why they are light weight is because the transducers are made to be as light and small as possible. Even though they are portable, that does not mean that quality is lost in measurement. A portable Mass Flow Meters can be as accurate as it is portable.
All portable flow meters are non-invasive. This is because it would need to work with multiple fluids, otherwise being portable would not do any good. Typically a portable flow meter will use ultrasonic because it does not interfere with most fluids. Ultrasonic is also a very useful because it is easy to produce and to measure with, and it works on simple echolocation or Doppler principles.
Because ultrasonic waves do not interfere with many fluids, it can be used with multiple types of fluids. Examples include oxygen, steam, diesel, or just plain normal or compressed air. As long as the fluid is within the technical specifications, a portable ultrasonic gas flow meter can be used for it.
Portable Electromagnetic Flow Meters are very useful for people who use machinery that use a type of fluid for normal operation. Even if a person forgot to buy a non-portable flow meter, a portable flow meter is a suitable substitute until he or she can get a non-portable one. Most portable flow meters use ultrasonic signals, though some can use electromagnetic signals. Ultrasonic waves typically do not cause interference in the fluid's rate of flow and can provide very accurate readings. A portable ultrasonic flow meter is usually small enough to carry around with one hand, so they are easy to transport as well as use. If you do not have a portable ultrasonic flow meter, and use machinery that uses fluids, then get one today!
Portable ultrasonic gas flow meters are usually light enough for someone to hold in one hand. This allows for easy transportation, and easy measurements of multiple locations. The main reason why they are light weight is because the transducers are made to be as light and small as possible. Even though they are portable, that does not mean that quality is lost in measurement. A portable Mass Flow Meters can be as accurate as it is portable.
All portable flow meters are non-invasive. This is because it would need to work with multiple fluids, otherwise being portable would not do any good. Typically a portable flow meter will use ultrasonic because it does not interfere with most fluids. Ultrasonic is also a very useful because it is easy to produce and to measure with, and it works on simple echolocation or Doppler principles.
Because ultrasonic waves do not interfere with many fluids, it can be used with multiple types of fluids. Examples include oxygen, steam, diesel, or just plain normal or compressed air. As long as the fluid is within the technical specifications, a portable ultrasonic gas flow meter can be used for it.
Portable Electromagnetic Flow Meters are very useful for people who use machinery that use a type of fluid for normal operation. Even if a person forgot to buy a non-portable flow meter, a portable flow meter is a suitable substitute until he or she can get a non-portable one. Most portable flow meters use ultrasonic signals, though some can use electromagnetic signals. Ultrasonic waves typically do not cause interference in the fluid's rate of flow and can provide very accurate readings. A portable ultrasonic flow meter is usually small enough to carry around with one hand, so they are easy to transport as well as use. If you do not have a portable ultrasonic flow meter, and use machinery that uses fluids, then get one today!
Article Source: http://ezinearticles.com/?expert=Gottlieb_Wendehals |
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