Conductivity / TDS Sensor
TDS sensor Online/ Conductivity Sensor Online/ Online Conductivity cell
The electrical conductivity sensor (EC sensor) measures the electrical conductivity in a solution which usually used for aquaculture and water quality testing. Electrical Conductivity Sensor is specially designed for a low-cost system with a relatively high accuracy that can cover most applications. it easy to use and very suitable for Arduino and Raspberry Pi projects.
Range : 000 TO 9999 MCM
Resolution : 1 mcm
Tolerence : +/- 1%
Output : sine wave
Operating Voltage : 5 VDC
Size : 16* 110
Body : PP/ABS
Conductivity Sensor Online
What is TDS?
The PPM (Particle per Million) TDS value (Total Dissolved Solids) gives the sum of total dissolved solids in water. These solids may be salts, minerals, and metals. Mostly Sodium and magnesium salt fond dissolved. TDS measred in PPM.
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 or 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.
What does it mean about the water quality?
DM water with a ppm value of zero, is automatically free from any pesticides and drug residues, is far from it. All the TDS meter measures are merely the number of ions in the water. Most of the pesticides, hormone-disturbing substances, and drug residues are usually no ions!
In short: water with a low ppm value is virtually free from salts and minerals, but can hide a large cocktail of non-ionic chemicals in itself. The result of a TDS meter is 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
if you want to check the functionality of an osmosis system, the mere TDS values are not suitable as an indicator of the water quality. Hence extensive and detailed water analyzes are often very expensive and only reflect a snapshot, 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 is essential to pay attention to appropriate assessments and long-term studies! Because the label “filters pesticides” can also mean, with an inferior filter, that only 5% of the pesticides are removed, or the retention rate drops rapidly after a short time.
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