Sensorex FCL Amperometric Free Chlorine Sensor vs ORP

Yup, that does work...but at over $1,000 per probe it’s a bit expensive. Plus you’d need to build or buy a controller/monitor for it (add another $500-$1000). Then, you’ll have to save lots of money because amperometric probes are consumable devices, ie, they have finite lifetimes of about a year or so depending on how good you are at caring for them. Not sure if those probes are rugged enough for continuous outdoor use as they look like they are more suitable for an indoor lab environment.
 
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