Other calibrations

Air speed is important to determine the volumetric flow of the inlet and outlet air in ventilation, air conditioning, cooling systems.

This magnitude is measured in m/s

The most frequent measuring equipments are anemometers, which can be hot wire, windlass probes or pilot tubes.

For the creation of air at certain speeds, we use wind tubes.

Electrical conductivity is a material's ability to allow the electrical current through it.

It is measured in µS/cm or mg/l

To measure this magnitude, we use conductivity meters and certified conductivity patterns.

Time is the physical magnitude that measures the period that goes by between two consecutive events.

Chronometers are equipments employed to measure time intervals, usually short and with exactitude.

Time is measured in s in the International Unit System.

Chronometers can be digital or analog.

A chronometer is composed by a power source, a time base, a counter and an indicator

For its calibration, we can use three methods: comparison, totaling and time base

Illuminance is the quantity of luminous flux that a surface emits by area unit. For its measurement, we use luxmeters.

Luxmeters are instruments that help determine the real illuminance of the environment. The measuring unit is the lux.

It has a photo-electrical cell that captures lights and transforms it into electrical signals, that indicate the display of the value in lux of the existing illuminance.

Luxmeters can have various scales to adapt to the different illuminance ranges.

pH is a parameter that indicates the degree of acidity or basicity of a watery solution.

To determine the pH of a dissolution, we use the pH meter which, through the measuring of the potential that is developed through the glass membrane that separates two solutions with different proton concentrations, establishes the pH.

The pH meter has two electrodes, one made of calomel and another made of glass.

There are certifies pH pattern solutions with different values, that help calibrate the pH meter in different ranges.

Calibration consists of comparing the values indicated by the measuring instrument that is to be calibrated with the values of the pattern masses that are used in specific conditions and with a defined method, that takes into consideration the influence of the different factors that affect the reading of the equipment that is to be calibrated. The calibration is carried out in a controlled and documented way.

The calibration ensures the reliability of the measurements of the calibrated equipments and to warrant the adequate functioning in the facilities and processes where they are used, contributing to increase quality.

The result of the calibration is collected in a Calibration Certificate, where the correction values to be applied in different considered calibration points will be indicated, as well as the uncertainty of those measures.