Pressure is an important process variable because it sets critical conditions for boiling, chemical reactions, distillation, extrusion, vacuuming, and conditioning of air. Incorrect pressure or flow rate can cause major safety, quality, and productivity problems. Very high pressure or flow rate inside a sealed environment can also cause an explosion. In order to ensure that plants operate efficiently and safely, periodic calibration of pressure, level, and flow instruments is required.

Many factories and metrology laboratories use various pressure and flow-meter calibration instruments. This high-accuracy equipment is used to calibrate industrial devices like pressure transducers, pressure gauges, and transmitters, as well as instruments that measure and control flow.

Some of the important types of devices used with pressure calibrators are:

1) Pressure gauges: They are instruments used to measure pressure in liquids and gases. Some of the commonly used pressure gauges are glycerin gauges, electric contact gauges, differential gauges, test gauges and capsule gauges. These are usually used in commercial production plants.

2) Calibration standard pressure sensors: These pressure sensors, usually consisting of differential pressure manometers, gauges, pressure controller, transmitters, and vacuum gauges are very precise and are sometimes used in calibration standard labs for secondary reference.

3) Pneumatic calibration hand pumps: These pressure calibrators manually produce air pressure set points. Then, these are used to calibrate pressure equipment with the help of a pressure indicator.

4) Pressure calibrators utilizing electrical measurement: These measure electrical current as well as voltage in order to show the output signal produced by a pressure transducer.

5) Digital test gauges: These gauges are installed on both hydraulic and pneumatic calibration hand pumps to determine pressures with precision.

6) Precision manometers: These pressure calibrators are handheld instruments, which provide a selection of pressure units. They are powered by batteries.

7) High pressure calibration hand pumps: These instruments produce pressure in order to calibrate a test gauge or connect to an indicator.

For any transducers or measurement systems, which provide information on the amount of material transferred in a given time, flow meter calibration is necessary. In flow-meter calibration, measurements usually occur in units of mass per unit time (gravimetric measurement) or volume per unit time (volumetric measurement). These two types of measurements relate to one another by the density (mass per unit volume) of the flowing material. This third method is called comparison measurement.

African music is the music of Africans who live in a large region of 50 nations, each with a special culture, history and language, South of Sahara. Zulu musical instruments are part of this multilingual culture. African music has some distinct characteristics: the use of repetition is one of them. Another important characteristic is the polyphony; this is the combination of different musical parts played simultaneously.

The history is marked by the awesome military strategies of the Zulu King Shaka. The King’s and his warriors’ campaign of expansion is well known in world history. Zulu rich traditional culture includes songs, dances and colorful rituals, Zulu musical instruments are spectacular and original. A variety of Zulu musical instruments are well known, s well as the traditional Mine dance; Zulus have longtime used their music as a cry for freedom.

African music is really rich in modes of expression: drum ensembles are using Zulu musical instruments from the percussion family. Each drummer uses special methods to produce sounds to distinguish his drum from the others. Iron bells are very popular Zulu musical instruments; they are used to produce a repeated sound to help the drummers to play at the correct time.

Zulu musical instruments, rare and very special
The akadinda is a king of xylophone; two groups of African musicians are playing simultaneously. The first group is playing repeatedly the same pattern; the second group plays to fill in the missing sounds. Groups of Zulu musicians play also using flutes, trumpets or xylophones. Each player plays a single note in a strange rotation with the other players. The result is a polyphonic piece, characteristic to African music.

Musical practices of South African people were observed from many years; Zulu musical instruments are obsolete. Venda mbila is an old Zulu musical instrument; it is not used anymore. Reed flutes, contrary, are still very popular. The influence of foreign cultures and civilizations causes many of old Zulu musical instruments to become obsolete.

Musical instruments such as tsonga a horn, ingungu a friction drum, nkoka a drum, pedi a flute, venda musical bow and stick, deze and demba thumb piano and resonatos, umfece ankle rattles are almost obsolete.

To preserve this awesome heritage of Zulu musical instruments, the necessary information was entered into a database; each Zulu musical instrument was digitally photographed to preserve all information about it.

Regarding the core business question.
In our company presentation you can read following:

Vision
Cewe to be the leader in precision metering of electricity.

Business idea
From metering point to decision making
By manufacturing quality products for metering, coupled with communication, processing and presentation of data, we enable our customers to make sensible decisions. This will facilitate energy saving and contribute to a better environment.

Our new products
Electronic products that have their own intelligence and communication features from the corner stones of todays energy management systems.
Our R&D department focuses mainly on electronics and software development.
We make it possible for you to gain effective control over your system by using our powerful products for collecting, processing, communication and presenting measurements.

We are your world wide partner!
Our IQ96 can be found all over the world
Our distributors and partners can reach customers all over the world. We have manufactured and supplied our products, through our distributors, for thousands of installations. We have built up a great number of reference projects. Some of them may be of interest to you. It is very likely that, somewhere in the world, we have already solved the problems you are facing right now.

New information pours in every month. Sometimes from one of our distributors in the UK or Italy, or perhaps from an end user somewhere in the Sahara desert.

Contact us!
Contact us so that we can provide you with the best technical solution for your particular application. Together with our distributors we have gathered many years of experience.

It is good to push that we have our own Develop dept. for the transducers and Energy Meters and our own manufacturing for the Instruments and Energy Meters and as it looks today also for the transducers in the future. Sweden is well known as good quality when it comes to manufacturing.

Cewe is part of USD 160 million Entity Group with diversified interest in electronic metering, software development, revenue management systems, IT and IT enabled services for the utility industry. Entity Group is focused towards providing solutions in metering, communicating, managing or controlling energy wherever it is transmitted or used.

Written by S. Van Dyck

A good violin, viola or cello varnish can play an important role in perfecting the sound quality of an instrument. The varnish applied by Stradivari to his violins is still believed by many to be the secret the their phenomenal sound. Whether oil or alcohol-based, violinmakers prize their varnish recipes as one of the most important elements of the violinmaking process.

Before applying any coatings to the instrument, the white wood can be given a tan by exposure to sunlight for a period of several days to several weeks. Aging the wood brings out the color and visual character of the wood through oxidation and ultraviolet light.

When the wood has received the desired look, the next stage is applying a -ground- coating. A violinmaker may prefer to apply a primer or sealer first. While also darkening and deepening the wood’s visual depth, the ground coating strengthens and protects the instrument even after the varnish has worn off. Many recipes for the ground coat exist and typically this is a tightly held secret.

Next, the instrument is ready to be varnished. Many recipes exist; most consist of sun-thickened oils such as linseed, lavender or walnut oil combined with oxidized resins such as amber, dammar, balsam and shellac. Alcohol can also be used as a part of or in addition to an oil base. The mixture is left to sit for up to a week, being stirred a few times a day until the lac no longer sits at the top. The mixture is then boiled, cooled and boiled again, then filtered for impurities.

Adding color to the varnish mixture can help to bring out darker, richer tones, if the varnish mixture is too light. Coloring agents, or -lakes,- include turmeric and saffron for a yellow tone. Sandalwood and pernambucco bring out a redder tone. The varnish is then applied in many coats depending upon the thickness and consistency of the varnish. The varnish is allowed to dry in the sun between coats. Touch ups can be added if there are areas needing additional coating. The instrument can then be lightly polished using a soft cloth with alcohol and mineral oil and or polished out using pumice powders.

Hindustani music is just a glimpse of the rich cultural scene in India. India is a land of festivals, music, devotion and the strength of communal harmony. Instrumental music is divine and soul lifting. This is used in meditation and when interspersed with chants of ‘Om’ the aura in the room shifts to a heavenly venue. Instrumental music is therapeutic. It is also used while performing surgeries and a blessing to those who are recuperating from a sickness. If the monotony of a particular instrument is maintained, there is a certain solitude that is ethereal while listening to this kind of music.

Jugalbandi or the juxtaposed playing of two instruments which is similar or diverse category is enchanting. This is an interesting opportunity for the artist to unleash his creative potential to the fullest extent. Listening to jugalbandi music with a sitar and flute is mesmerizing. The easiest way to get a baby to sleep is to play some instrumental music. Garbh sanskar chants with Hindustani instrumental music is the best way of invoking the spiritual nature in the womb of a mother. Jal tarang or the water music makes us wonder of the depth of talent in the originator.

Hindustani Music is bifurcated into gharanas. The Kawal and Kalwanta were the main ghranas. The various schools emerged later as the Sarasota Veena banns, the Imdadkahni, Moradabad, Maihar, Lucknow and the Benaras gharana. The instrumental gharanas were the Gwalior Gharana which was notified by playing the khayal and Rahimat Khan is to be credited for preserving the same. The Been was popularized here. There are six main styles of playing the Tabla and that includes Delhi, Punjab, Ajrara, Benearas, Lucknow and Farukabad.

The Sitar gharanas includes the sitar of Jaipur like the Seni gharana which is famous with Amrita Sen and the other sitar gharana of lucknow is founded by Gulam Mohamad Khan. The Sarod Gharana of Saharanpur another gharana of Niamutulla Khan are the chief branches. Contemporary classical instrumental music and composition is a favourite music lover’s select item. The joy derived from music is incomparable to the material luxuries one can possess. Jazz fusion with Indian instruments is another newest method and music in any form is pleasing. Live performances are captivating, though albums can be enjoyed with a good music system.

Now enjoy to the classical instrumental songs, download movie songs or sing the latest hindi songs with hindi songs lyrics from our website.

Musical instruments in the UK today are more popular for children as it is for adults. Children today begin their musical journey through various instruments which are readily available in the market. There are many instruments that have become popular and interesting for children. One of the most accepted musical instruments for children in the UK is the Tubano Drums. This is a set of five multi colored drums which is very easy to play.

The Tubano drums have replaceable PVC heads which generate different tones when played. Children of all ages find it fun to play on them. In the UK, these drums have become highly popular in the last few years. Experts say that these drums also have a therapeutic benefit and provide children with mental and physical relaxation. Musical instruments like Tubano drums can influence young and aspirant musicians.

Apart from the drums one very unique musical instrument is the Imbarimba available in the UK. This instrument is the combination of a xylophone and a thumb piano. Individually these instruments are fascinating but when combined together the Imbarimba produces a phenomenal sound. Both children and adults enjoy the music and tone produced by the Imbarimba. It is made of tropical hardwood and designed appropriately so that two people can play on it at once.

The Imbarimba sports five tone pentatonic scales and they are always in harmony. Children can learn to play such musical instruments very easily because there are absolutely no wrong notes and the instrument does not require maintenance. Similarly, another musical instrument that children enjoy a lot is the Eye Chimes. Eye Chimes are simple, playground musical equipment which can be played with a mallet. The smallest tap on the instrument can magnify the sound immensely.

The Eye chimes are the perfect musical instruments to place on a playground. The powerful sound extends throughout the playground and the children enjoy these sounds a lot. The chimes are made out of a collection of 8 to 10 tubes. The children in the playground can experience surround sound which does not ruin their hearing. The mallets provided for these musical instruments are very robust and are strong enough to withstand the outdoor weather in the UK.

All these fascinating musical instruments give children an opportunity to sow their musical oaths. At the same time these instruments are well enjoyed by the children and the adults appreciate it too, since it gives their children an opportunity to learn and master music from an early age.

Collecting vintage musical instruments is popular and increasing. Good old instruments are becoming rare,valuable and are easy to find. There is several ways to find what you are looking for, and here is some hints in that direction.

Search relevant magazines or local newspapers for classified ads ,maybe you find an instrument with great collecting potential.Often private persons do not know what they have between their hands and its value. Maybe the instrument is a piece they have inherited or used themselves many years ago.Either way its a good chance to do a bargain.

Another way to find items are at local markets,flee markets and garage sales.Vintage musical instruments can turn up in the most unexpected places so keep an eagle eye close to these opportunities.
A safe place to find instruments are online.Huge amounts of dealers find,restore and sell them all over the net.Many of them have been around for years and have a huge contact net for supply of vintage musical instruments.

Most of them run their own sale sites and display their products with photos,comments and prices.As I said ,they have had the instruments restored and they definately know their value so do not excpect to do a scoop there.

Online is also large market places where powersellers and private persons can put their ads. These are sold in an auction mode, that means the instruments are displayed for some time and buyers must bid and hope to purchase them as cheap as possible.The most common marketplace on the internet is Ebay where millions of different items are for sale every day.Do a search there , I guarantee you will find what you are looking for in a short periode of time.

Of course there is several other marketplaces online to search and there is even marketplaces in each country.
In my country the most common places to sell all kind of products are QXL.no or Finn.no. I recommend you to get an overview of your options where you live and work from there. Vintage musical instruments are really good items to collect and invest so do not hesitate to grab some nice pieces.

Since no two violins are exactly the same, each kind of violin string will sound differently on various instruments. Determining which strings to make use of also depends upon what style of music you’re playing as different strings will provide, or detract from, the particular needs from the instrument.

For instance, there’s a vast difference in the needs of a classical violinist along with a country fiddler. There can also be great variations in the unique styles of each player, as well as the instrument being played. The responsiveness, volume, playability and sound will all vary with the type of strings chosen.

Basically, violin strings are available in three types: gut, steel core and synthetic core. Modern gut strings have a sheep gut core and are covered with silver or copper wire. Providing complex overtones coupled with an abundant, warm sound, gut strings remain a well known choice with those playing earlier pieces. The drawback to using them, however, is they tend to react to varying weather conditions and require more tuning until they’re adequately stretched.

Steel core may be the violin string of preference for players of non-classical music. They offer a clearer and much more direct sound with fewer overtones than gut strings. The pitch can also be more stable and they tend to be longer lasting. Steel core violin strings are good choices for beginners because of their bright, crisp sound.

Synthetic core strings didnt arrive on the market before 1970s. Many brands of synthetic strings made from nylon along with other composite materials make their way onto instruments since that time. They are popular simply because they provide the pleasant sound of gut string with a more stable pitch.

Another essential consideration when looking for the right strings for your instrument and type of play is the violin string gauge. Various thicknesses and tensions are available in most string brands and also the various gauges will determine the type of sound you produce. A thicker string will produce greater volume and center tone, while a thinner string provides you with a shorter, crisper sound.

If youre new at altering your violins strings then purchasing them at a music store may be in order in the beginning. Most stores usually provide free string change with a purchase, although strings in a music store are often quite expensive due to inventory and other overhead costs.

If you’re comfortable with changing your own strings, or know someone who changes them for you, then you definitely should look around online where violin strings can be found much cheaper. Remember to element in the shipping expense when you compare violin string prices from various sources.

We all have a few of those childhood dreams that fell to the wayside as we grew up. We were either too busy or too involved in something else or were too poor or just kept forgetting about it. It doesn’t matter why we never learned to play the instruments that we wanted to, what matters is that now that we’re adults, are we going to learn to play the musical instruments we dreamed of? While shopping for the musical instruments of our dreams, we keep running across the “learn to play” instruments and book sets. They look like they were probably designed for kids, but the instruments look like they are almost high quality enough to get away with playing. So can anyone really learn to play a musical instrument from the “learn to play” series? To be honest, those who learned to play at least one musical instrument as a child most likely can learn to play another musical instrument form the “learn to play” series provided we at least learned the basics of reading music. Being able to at least read the basic scale from sheet music will help tremendously when trying to learn to plat a musical instrument from a book. Some people do very well learning to play musical instruments from a book, but the people who do very well all have one thing in common, they are self learners. Those of us who were born in the mid to late seventies and beyond grew up in a system of education that everything was handfed to us, thus the majority of us do not learn very well on our own. We need someone to hold our hands and teach us note by note to play a musical instrument, not to mention trying to learn other things. Learning to play a musical instrument from a book requires a certain amount of self teaching ability. Without the ability to “figure things out along the way,” learning to play a musical instrument from a book will prove to be quite frustrating, although it can most certainly be done. If our desire is strong enough and our patience can run fairly deep, then yes, we can learn to play a musical instrument from a book. There are few things quite as satisfying as accomplishing something like the challenge of learning to play a musical instrument from a book. As we learn to play any musical instrument without the guidance of someone else, just like kids, our confidence grows. For adults, learning to play a musical instrument from a book may very well be the realization of a childhood dream, and there’s nothing but pure magic in that.

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Fun to make and a great accompaniment to the classic carol Jingle Bells, just shake to the beat. Who would have thought that rubbish and junk could sound so festive?

Al you need to make a jingle bells musical instrument is…
16 metal bottle caps, paint, brass nails, sandpaper, hammer and some scraps of wood.

First paint the out side of the bottle caps a nice metallic colour. Spray paint is quick and easy, but applying paint with a brush is just as good.

When the paint is dry, use a large nail and hammer to make a hole in the centre of each cap. Have the cap sitting face up as it would do on the bottle, that way the rough edges are created on the inside of the ‘bell’.

The bells are fixed to a piece of wood, roughly 2cm by 3cm and 28cm long. Give the wood a good sanding so that it doesn’t have any rough surfaces. You could paint or varnish the ‘handle’ if you wish to.
Working on one side of the handle at a time, attach the capes in pairs with the insides of the caps facing one another. Push a brass nail in the holes of the caps and offer it up to the wood.

Place the first set of bells 5cm away from the end. Don’t hammer the nail in too far into the wood. The bells need to move freely on the nail and clatter together.

The second set should be 8.5cm away from the end.

The third set should be 12cm away from the end.

Now turn the handle over to attach bells to the other side. Use scraps of wood to prop up each end of the handle so that it is clear off the workbench. Otherwise you will spoil the bells that you have already attached.

Add bells in pairs in the same way as you did on the other side, but this time the first set of bells 1.5cm away from the end. Add the other sets of bells so that they are level with the bells on the other side of the handle.

Then turn the handle over to attach the remaining set of bells. Again use scraps of wood to prop up the handle.

And there you have it, a set of jingle bells. Young children should be supervised when playing the jingle bells.

If you find it difficult to obtain bottle caps, you could ask an adult to approach a public house or bar, they have no use of the caps. You could also maybe write to a local brewery requesting some bottle caps. Alternatively look in the winemaking department of Boots or Wilkinsons for new bottle caps.