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Soil and water measurements

Water measurements are a bit more complex than those in air, at least for lower-cost sensors. Here, we are generally limited to physico-chemical parameters such as pH, conductivity, dissolved oxygen and similar. Similar to air measurements, when the data board by itself can't read the sensor directly, we need to use interface electronics to get reading from them.

Before we start

Two important notes:

  1. A lot of the materials from this guide are taken from Atlas Scientific datasheets. All credit to the well-designed images is theirs. We have integrated these probes in the Smart Citizen Kit because of their quality and good documentation. This page is not meant to be a replacement for Atlas Scientific documents and we do not have any affiliation to Atlas Scientific.
  2. There is also additional webinars that can support this page in more detail. Here you can find the presentation and the link to the videos below:

Supported sensors

Atlas DO

Atlas DO

A galvanic probe that can measure dissolved oxygen in water.

Atlas EC

Atlas EC

A conductivity meter to measure electrolytes in a liquid!

Atlas ORP

Atlas ORP

Field | water

Metric | orp

Connection | external

An ORP probe is a passive device that detects a current generated from the oxidation or reduction of chemical substances in water.

Atlas Temperature

Atlas Temperature

An encapsulated resistive sensor (RTD, resistance temperature detector).

Atlas pH

Atlas pH

The pH probe is a very delicate submerged electrode in a thin glass bubble.