We don't have synonyms for pluviograph yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are fluviograph, plagiograph and pluviography.
°An instrument for measuring the amount of water that has fallen (ie. rain gauge), with a feature to register the data in real time to demonstrate rainfall over a short period of time, often an automated graphing instrument.
°An instrument for measuring the amount of water that has fallen (ie. rain gauge), with a feature to register the data in real time to demonstrate rainfall over a short period of time, often an automated graphing instrument.