Calibration Test _ Vibration laboratory | Salahaddin University | College of Engineering | Mechanical Department

1. Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
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University of salahaddin | college of Engineering | Mechanical Department
Experiment NO.2
“Calibration Test”
Prepared by :Darawan Wahid Rahman
Group : A1
Date: 21-Nov-2015

2. Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
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Experiment NO.2 | “Calibration Test”
Theory: Calibration is process of finding a relationship between two unknown (when the
measurable quantities are not given a particular value for the amount considered or found a
standard for the quantity) quantities. When one of quantity is known, which is made or set with
one device, another measurement is made as similar way as possible with the first device using
a second device. The measurable quantities may differ in two devices which are equivalent. The
device with the known or assigned correctness is called the standard. The second device is
the unit under test, test instrument, or any of several other names for the device being
calibrated. The formal definition of calibration by the International Bureau of Weights and
Measures is the following: "Operation that, under specified conditions, in a first step, establishes
a relation between the quantity values with measurement uncertainties provided by
measurement standards and corresponding indications with associated measurement
uncertainties (of the calibrated instrument or secondary standard) and, in a second step, uses
this information to establish a relation for obtaining a measurement result from an indication.
Practical:
Experiment setup:
- Accelerometer :
An accelerometer is a device that measures proper acceleration ("g-force"). Proper acceleration
is not the same as coordinate acceleration (rate of change of velocity).
The Type 4513
Description
The Type 4513 accelerometer family are piezoelectric Shear accelerometers with integral
electronics. The transducers feature a 10–32 UNF side connector, an insulated base and are
hermetically sealed. The transducers have a high resolution, giving an excellent signal-to-noise
ratio. They can be mounted by means of a 10–32 UNF threaded stud, or adhesively mounted.
Calibration
The transducers are individually calibrated using state-of the-art random FFT technology,
providing an 800-point high-resolution calibration (magnitude and phase), ultimately giving a

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Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
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unique characterization and securing the integrity of the vibration measurement. The sensitivity
given on the calibration chart has been measured at 159.2 Hz with a 95% confidence level,
using a coverage factor k = 2.

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Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
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Data acquisition: is the process of sampling signals that measure real world physical
conditions and converting the resulting samples into digital numeric values that can be
manipulated by a computer. Data acquisition systems, abbreviated by the
acronyms DAS or DAQ, typically convert analog waveforms into digital values for processing.
Data acquisition applications are usually controlled by software programs developed using
various general purpose programming languages such
as Assembly, BASIC, C, C++, Fortran, Java, LabVIEW, Lisp, Pascal,Pulse Lab. Shop, etc.. we
have more type of Accelerometer, but in this experiment we worked with (model-7539_A)
Calibrator is an equipment used to adjust an instrument accuracy, often associated with a
specific application: temperature, pressure, weight. The most sophisticated industrial equipment
will not be useful unless it is calibrated. Through calibration, adjustments made to a piece of
equipment ensure that it performs as expected — that it can be relied on to deliver predictable,
accurate results that meet quality standards.

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Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
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Appropriate :
 Sensors, to convert physical parameters to electrical signals.
 Signal conditioning circuitry, to convert sensor signals into a form that can be converted to
digital values.
 Analog-to-digital converters, to convert conditioned sensor signals to digital values.
Data acquisition applications are usually controlled by software programs developed using
various general purpose programming languages

6. Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
Prepared by : Darawan Abdulwahid E-mail : darawan.me@gmail.com
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Result: To know the accelerometer is fail or pass
1-By Curve
2-By Color
* Yellow means Recognize
* Red means Test
* Green means Pass
* Black means Fail