Water Quality Learning Center

How To Eliminate Electromagnetic Interference From Analog Systems

Electromagnetic interference of water quality measurement can have an enormous impact on your results.  Learn what it is and how to prevent it so you can save time, money, and frustration.

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The Basics of Conductivity Electrodes

Choosing the right electrode for your application is crucial for success.  Learn more about the different types of conductivity electrodes and each of their features!

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The Importance of Isolation in Water Quality Measurement

Isolation is extremely useful to prevent ground loops and provide an extra barrier of protection against electrical shock to the user.  This article goes over what isolation is, what methods some manufacturers (like us) use, and why it can be so important in accurate water quality measurement.

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When to Calibrate and Replace an Electrode

This guide goes over the specifics of calibration:

  • Why electrodes become less accurate
  • How to make a calibration schedule
  • How to calculate the health of an electrode

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pH Electrode Guide

Learn more about the various types and features of today’s pH electrodes so you can make an informed decision on which one is right for you.  In this article, we go over:

  • Glass vs ISFET electrodes
  • Single vs. double junction
  • And others!

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Analog Signals: Current vs. Voltage

Spoilers: Current is better than voltage for sending signals long distances and for noise immunity.  Read the article to find out why!

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The Guide to pH Drift

 pH drift is one of the most frustrating issues to troubleshoot because it can seem random and be caused by many different aspects of the environment, maintenance, and sensor design.  This guide provides steps to simplify the troubleshooting process and determine what the cause of drift is along with how to fix it.

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The Best Storage Soutions for pH Sensors

After surveying water and wastewater operators, we found that there was confusion surrounding the topic of storage solutions for pH sensors.  This article goes over the limiting factors of pH sensors and how different solutions affect those factors, allowing you to pick the right solution for your sensor.

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Linear Conversion of Conductivity to Salinity

This article provides a linear equation for scaling temperature-compensated conductivity measurements to salinity with most monitoring devices. It also goes over how we obtained it from the Practical Salinity Scale of 1978 and explains potential margins of error.

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Comparison of Dissolved Oxygen Sensors

This article goes over what dissolved oxygen is and the different sensors we use to measure it in real-time. It specifically focuses on comparing galvanic, polarographic, and optical technologies to help you determine what is best for your application.

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Factors Affecting Dissolved Oxygen

Salinity, pressure, and temperature all influence dissolved oxygen concentration in different ways. This article goes over how to account for these factors to ensure accurate results in any condition.

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…and more to come!

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