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Environmental Monitoring Instruments

Scientists utilize many devices in order to monitor the environment. In order to successful assess human surroundings, everything from air quality to water safety to ground shifts can be measured. This information helps scientists determine what is going on with the world as well as how to best get involved if intervention is necessary.

  1. Chalked Steel Tape

    • Testing groundwater can help determine flow directions or changes in gradients. These changes can cause a disturbance in the access to water for people and animals. Water supply wells are often where scientists begin their tracking by using a chalked steel tape. It is the most accurate measurement and supplies a reference point for all water testing. The steel tape hangs when weighted and is covered with chalk, which is what comes back as "wet," allowing for the proper calculation of the water table.

    Hydrogen Sulfide Analyzer

    • A Hydrogen Sulfide Analyzer measures the hydrogen sulfide in ambient air. An internal pump pulls air over the sensor, which absorbs the hydrogen sulfide. The machine then turns the measurement into a detection in parts per million (ppm). Repeat the process many times and take an average of the readings to determine the true sampling of hydrogen sulfide in the air. Prolonged exposure to low levels of hydrogen sulfide can affect your health by resulting in fatigue, headaches and dizziness. High levels can cause loss of consciousness or death. As it is generally produced via the sewer system, this device is often used to maintain air health near treatment plants or heavily populated areas with open sewer systems.

    Seismograph

    • Seismographs are environmental monitoring devices measuring the movement of the earth's crust. The constant monitoring below the surface can record earthquakes. While major earthquakes cause damage, the earth's crust is in a constant state of flux. By consistently monitoring the movement, scientists can predict problem areas when there is a significant change in seismic activity. This can help to put out not only earthquake warnings but also volcano warnings and typhoon or tidal wave alerts.

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