Conductivity and Resistivity Conductivity measures the ability of a solution to conduct an electric current between two electrodes. In solution, the current flows by ion transport.
4-20mA Input It is extremely simple and inexpensive to measure 4-20ma signal with a device that will measure only Voltage inputs.
Water and Wastewater Test Methods for Operators A variety of test procedures and methods are available for use by water and wastewater operators.
ph Control Systems for pH control are characterized by extreme rangeability and sensitivity, and are also subject to difficulties arising from contact between measuring electrodes and hostile fluids.
Technical Conductivity and Resistivity Conductivity measures the ability of a solution to conduct an electric current between two electrodes.
Electronic Halogen Leak Detector For many years the most effective, and only, method for finding gas leaks of any type was the use of a soap or "bubble" solution.
Electrode Basics pH electrode technology hasn't changed much in the past 50 to 60 years, yet pH electrode manufacturing remains an art.
Ion Selective Electrodes: Measurement Considerations This article is designed to apply, in general, to all specific ion electrodes.
Technical Dissolved Oxygen - The Fundamentals Dissolved oxygen (DO) is the term commonly used in liquid analytical work for the measurement of the amount of oxygen dissolved in a unit volume of water.
Differential Signal Vs Single-Ended Inputs One of the most common questions asked is the difference between single-ended and differential signals inputs, and what applications they should be considered in.
Wheatstone bridge for strain gauges In order to measure strain with a bonded resistance strain gauge, it must be connected to an electric circuit that is capable of measuring the minute changes in resistance corresponding to strain.
pH Control Systems pH control systems are characterized by extreme rangeability and sensitivity, and are also subject to difficulties arising from contact between measuring electrodes and hostile fluids.
Measuring pH with a Wireless Device: 3 Must-Have Features Ready to measure pH with a Wireless Device? This is what you should be looking for in a portable data logger for pH measurement.
Measurement of Current with a Voltage DAQ A data acquisition (DAQ) system that measures current typically does so directly. However, DAQ systems that measure voltage are often more readily available to the user.
What is a LVDT (Linear Variable Displacement Transducer)? An LVDT is an electromechanical device used to convert mechanical motion or vibrations, specifically rectilinear motion, into a variable electrical current, voltage or electric signals, and the reverse.
Load Cells & Force Sensors A load cell is a transducer which converts force into a measurable electrical output.
pH Meter A pH meter is an instrument used to measure acidity or alkalinity of a solution - also know as pH.