I am looking for sensors for a water quality project. The aim is to continuously monitor the following water parameters:
1. Free Chlorine
2. Oxygen Reduction Potential (ORP)
3. Total Chlorine
4. Combined Chlorine
8. Total Dissolved Solids (TDS)
10. Electrical Conductivity
11. Total Alkalinity
13. Cyanuric Acid
I am looking to interface with an electronic controller, the acceptable communication protocols are MODBUS (RS485), 4-20 mA, digital, analogue signals.
I need a table summarising, cost, communication protocol, delivery from etc.
Ideally looking for sensors with the lowest price point. Provide a few options if varying features etc.