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    Home»News»What is Calibration?
    News

    What is Calibration?

    RockyBy RockyJune 25, 2022No Comments4 Mins Read
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    We are often asked: Why should I compare a sound meter? The answer is simple when measuring noise, it is important to calibrate the sound meter so that it works properly.

    There are two types of solutions:

    • Field Calibration: The field caller prepares their meter before starting measurement, and
    • Periodic Calibration (or Verification): Calibration (or recalibration) performed by a manufacturer or calibration center “periodically” (usually performed by the manufacturer for warranty) to indicate that the instrument is performing as planned.

    What is field calibration?

    Field measurement should be done before starting your measurements and at the end (indicating calibration). If you want to use your measurements in any planning or legal environment, this is important. This is done using an acoustic calibrator (class 1 or 2 reference acoustic sauce depending on your noise level). 

    This should not be done before and after each measurement, but on each and after measurements you take. For example, if you are doing a lot of work in the factory all day, you will be instructed to do field สอบเทียบเครื่องมือวัด calibration when you start, again if you have lunchtime, and again when you start again. And stand at the end. For the day, and so on. 

    It is quite different from the noise dosimeter, you have to adjust it in the field before connecting it to the person who is wearing it all day, and then adjust it again at the end of their shift. Work when you take him away.

    Why do I have to do a field test if I have a comparison card?

    The audible step meter or noise dosimeter is a real instrument, and the microphone can be struck and damaged easily. These injuries may not go unnoticed. Therefore, using an acoustic calibrator before taking measurements helps to ensure that the instrument weighs correctly.

    Field measurement is a simple healthy view of the instrument against the known decibel frequency (usually 94 db or 114 db) at a known time (usually 1 khz) using an acoustic calibrator.

    What is the difference between field comparisons and periodic verification?

    Using an acoustic calibrator it only monitors one step and one frequency, while when performing a real sound measurement, your instrument records a different frequency range and levels combined to give it the same parameters including your desired. 

    Therefore, regular review (or periodic verification) is important to ensure that all the features and functions of your device work as required by the manufacturer. This is the process by which your instrument will be made when it is returned to Pulsar Instruments as a manufacturer.

    What can not do field calibration?

    A field acoustic calibrator cannot detect:

    • Your meta is based on a variety of frequencies.
    • Acoustic parameters like laeq and lcpeak
    • Whether the octave band filter or quantity measurements such as Ln value are working correctly.
    • Most importantly, your microphone has a frequency range
    • And even more important, it cannot be confirmed! (Your field acoustic calibrator should also be reviewed!).

    What is periodic verification or recalibration?

    Recalibration requires a large amount of testing and performance checks and is usually only done by the manufacturer in the calibration lab, and is the best way to increase the performance of your meter levels of noise dosimeters.

    Pulsar Instruments plc, a manufacturer of noise measurement equipment, is launching a new campaign to highlight the importance of compliance and regular monitoring of meter meters and other specific equipment such as dossiers and audible calibrators.

    Buy a real Pulsar instrument implant. Therefore, it is important to update any Pulsar meter to ensure that the measurements remain accurate and in accordance with the Noise at Work Regulations. By doing this, consumers avoid any mistakes, especially if the measurements need to be corrected in court. In addition, Pulsar will also ensure that all existing software upgrades are installed and any modified or tangible items are replaced as required, thus increasing equipment performance.

    Pulsar adheres to strict IS0 standards, which is a guarantee to any customer of the type of service performed and the performance of the service provided. All repeat in-house tests are performed at Pulsar Instruments plc by dedicated and experienced test engineers.

    The company offers a full package of this service with

    • Collected from customer
    • Recalibrate and store all household items
    • Delivery of all instrumentation to customer

    Upon completion, each instrument is issued with a valid certificate of validity for one year, and the warranty for each instrument is extended for an additional 12 months. To expand its customer service, Pulsar Instruments plc now offers fast, efficient, and friendly service to make noise level calibration as easy as possible. 

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    Rocky

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