Why Should We Calibrate Instruments?
I am sure that you will agree with me when I say that it is important to have at least a basic idea about what we are trying to do before we can look into why we need to do it. So, first of all it is imperative to understand what exactly is calibration.Calibration has been defined as the act of marking the scale of a measuring instrument so that the readings are in proper units. This definition in itself tells us why it is important; if an instrument is not calibrated, we do not know whether the measurement we take with it is accurate or not as it does not correspond to any established measuring unit.
This is done by comparing the instrument you have with another device which is already marked with the proper readings and is known to be accurate or by using a special calibration device which comes with sophisticated software for the calibration. All measuring instruments should be calibrated within frequent intervals to ensure that they are giving accurate details as simple things like the humidity, temperature, etc. may affect the correctness of a reading of a device over time.
Accuracy is an important factor in any of the measuring instruments but this is extra important in devices such as audiometers which are used to check and quantify the level of hearing and also hearing loss. Therefore, Audiometer Calibration should only be done by a trained professional who has all the necessary equipment and has a good reputation for providing a quality service. You would not want to give false or inaccurate readings to a person with regard to his/her hearing.Another use of calibration is that it gives you the ability to relate your measurements to those made by some other person using a different instrument of the same type. For example, this enables medical practitioners to evaluate the level of diminution of the hearing level of patient by comparing two readings taken form two different instruments at different labs without having to worry about the accuracy of each individual reading.
Reliability is also another factor which is of importance when considering measuring instruments. Activities such as noise meter calibration allows the authorities to rely on the readings when deciding whether the nose level of a particular establishment is acceptable or not and also in determining whether the sound levels pose any threats towards the impairment of hearing of the workers or the occupants in that particular place.In the light of the above discussion, it is apparent that having all sorts of sophisticated measuring instruments is not enough; they need to be checked periodically for accuracy and needs to be calibrated if you want to rely on the readings and to use the readings in a professional manner. Go right here to find out more details.