Description

TDS Sensor

OPERATION TDS Sensor

TDS sensor Online/ Conductivity Sensor Online/ Online Conductivity cell
The electrical conductivity sensor (EC sensor) measures the electrical conductivity in a solution. It usually used for aquaculture and water quality testing. Electrical Conductivity or E.C. Sensor is specially designed for a low-cost system with high accuracy that can cover most applications. its easy to use and suitable for Arduino and Raspberry Pi projects. Its most use full for Industrial applications.

Technical Specifications;
Range : 0.00 TO 9.999 MCM
Resolution : .001 mcm
Tolerence : +/- 1%
Output : sine wave
Operating Voltage : 5 VDC
Size : 16* 110
Body : PP/ABS

Conductivity Sensor Online

What is TDS?
TDS sensor that can measure the total dissolved solids (TDS) and electrical conductivity (EC) at once, which determines the taste and safety of the water. TDS sensor calibration at 80.5 to 966 ppm shows a 93.4% accuracy; 99.8% precision and 1.3 ppm hysteresis. In comparison, EC calibration at 161 to 1932 microsiemens/cm produces an average of 82.3% accuracy, 97.1% precision,
Conductivity Means: The conductivity of the water or any solid/liquid measured indicates ions are in the water, the better it conducts electricity. TDS meters typically quantify this conductivity in micro Siemens UCM / MCM. The latter stands for parts per million, i.e. the number of solid particles per one million water mixture particles. A value of 40 ppm means that from one million particles there are 40 dissolved ions and the rest (= 999 960) are water molecules.

TDS Sensor Online

What does it mean about the water quality?
DM water may define as a treated water with a ppm value of zero. Hence it is free from any pesticides and drug residues is far from it. Because All the TDS meter measures are merely the number of ions in the water. While Most of the pesticides, hormone-disturbing substances, and drug residues are usually no ions.

Hence water with a low ppm value , virtually free from salts and minerals. While can hide a large cocktail of non-ionic chemicals in itself. So The result of  TDS meter therefore not very meaningful with regard to the actual water quality. While Other analytical methods or a water analysis by a reputable laboratory may be better suited to find out about the actual water quality.

Observation as analyst:

While you want to check the functionality of an osmosis system. Hence the mere TDS values are not suitable as an indicator of the water quality. Hence extensive and detailed water analyzes very expensive and only reflect a snapshot. So they are only advisable if the drinking water is to be tested for individual substances. It often makes more sense to invest in a high-quality water filter right away. This way you have more security with your daily drinking water consumption in the long term. However it essential to pay attention to appropriate assessments and long-term studies. Because the label “filters pesticides” can also mean. While with an inferior filter, that only 5% of the pesticides removed, or the retention rate drops rapidly after a short time.

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