From dataTaker | For Coal Mine Runoff
Online — CAS DataLoggers provided an intelligent water quality data logging solution for an open-cut coal mine to monitor high salinity water runoff into local retaining ponds with a Water Quality Data Logger.
The water from these retention ponds could only be released into the local river system when it was of sufficient quality to have no effect on the irrigation supplies for the surrounding farming district.
Therefore it was necessary to closely monitor water quality in the lagoons for several key parameters including pH, salinity, and turbidity.
Mine management searched for a data logging system with the versatility to connect to a wide range of sensors that was capable of remote communications to allow convenient access to real-time and stored data.
The data logger also had to offer low power operation with the ability to operate off a solar panel since mains power was not available at the remote sites.
The coal mine choose a dataTaker DT80 Universal Input Data Logger to monitor the quality of the coal mine water discharge. The data logger was mounted in a weatherproof enclosure suitable for outdoor exposure at the monitoring site.
The DT80 was connected to a variety of sensors to allow measurement of conductivity (salinity), turbidity, pH, and water levels as well as thermocouples for water and air temperature.
For example, the turbidity meter used to monitor the cleanliness of the water output a 4-20 mA current signal proportional to the turbidity. This current was passed through a simple shunt resistor to generate a voltage which was then measured and automatically scaled by the DT80.
For powering the data logger, a small solar panel, charge controller and battery providing 12 VDC were connected directly to the data logger providing uninterrupted operation without external AC power.
Read the full story online at: https://www.dataloggerinc.com/resource-article/water-quality-data-logger-for-monitoring-coal-mine-runoff/
For more info on the dataTaker DT80 Universal Input Data Logger, or to find the ideal solution for your application-specific needs, contact a CAS Data Logger Applications Specialist at (800) 956-4437 or request more information.