PH sensor need undertakes regularly corrective, differ according to use condition corrective cycle is different also, general 4 to 8 weeks corrective can. Corrective when in putting probe fluid of amortize of two kinds of standards respectively commonly, fluid of amortize of two kinds of standards differs at least 2 PH, if corrective failure needs to undertake cleaning to probe, general situation puts probe into solution of 1%-3% hydrochloric acid to immerse 1-5 minute, reoccupy clear water is rinsed, with soft cloth wipe up. If grease exists, swab with alcohol. Undertake afresh corrective, if still cannot finish corrective specification probe is bad already, need changes new probe. Probe life arrives 3 years for 6 months commonly.

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