Tag Archives: meter

pH Measurement with Arduino

This tutorial will guide you How to measure water quality and other parameters ? and How  to use with Arduino? In this tutorial we use analog pH meter sensor, specially designed for Arduino controllers and has built-in simple, convenient and practical connection and features. It has an LED which works as the Power Indicator, a BNC connector and PH2.0 sensor interface. To use it, just connect the pH sensor with BNC connector, and plug the PH2.0 interface into the analog input port of any Arduino controller.
Attention: In order to ensure the accuracy of the pH probe, you need to use the standard solution to calibrate it regularly. These standard calibration solutions come with this pH sensor. Generally, the period is about half a year. If you measure the dirty aqueous solution, you need to increase the frequency of calibration. Continue reading pH Measurement with Arduino

Arduino Air Pressure Measurement


                Pressure is defined as force per unit area that a fluid exerts on its surroundings. You can measure this force by detecting the amount of deflection on a diaphragm positioned inline with the fluid. Given the known area of the diaphragm, pressure can then be calculated. Pressure sensors are packaged with a scale that provides a method to convert to engineering units. The SI unit for pressure is the Pascal (N/m2), but other common units of pressure include psi, atmospheres, bars, inches of mercury, millimeters of mercury. Continue reading Arduino Air Pressure Measurement

Arduino Light Intensity Meaurement


                The lux (symbol: lx) is the SI unit of luminance, measuring luminous flux per unit area. It is equal to one lumen per square meter. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface. Continue reading Arduino Light Intensity Meaurement

Frequency Measurement using Arduino


Frequency is the number of complete cycles per second in alternating current direction. The standard unit of frequency is the hertz, abbreviated Hz.

Frequency Measurement

                Frequency Measurement is carried out by measuring the number of cycles in one second, this method requires time of one second. Other method is to measure time period of one cycle F = 1 / T.

In this example time from first rise to the second rise is measured using interrupt on Pin 2 (INT0). It is set to detect rising pulse and at every 100mSec measured frequency is displayed on serial monitor. Continue reading Frequency Measurement using Arduino

Capacitance Measurement using Arduino


Capacitance is defined as the ability of a body to store an electric charge. The SI unit of capacitance is the farad (symbol: F), named after the English physicist Michael Faraday. A 1 farad capacitor, when charged with 1 coulomb of electrical charge, has a potential difference of 1 volt between its plates. Continue reading Capacitance Measurement using Arduino