The HI73311 is the replacement conductivity\/TDS electrode for the Hanna Instruments HI98311 (DiST 5) and HI98312 (DiST 6) pocket testers. It carries the graphite conductivity sensor and the built-in temperature sensor used for automatic temperature compensation. Fitting a fresh electrode restores measurement accuracy on a tester whose readings have started to drift or will no longer calibrate.<\/p>\n
This electrode is designed for the Hanna Instruments DiST 5 (HI98311) and DiST 6 (HI98312) pocket EC\/TDS testers. It is not interchangeable with pH testers or with other DiST models that use a different sensor body. Check the model number printed on the meter housing before ordering.<\/p>\n
The electrode screws onto the base of the tester body after the old unit is unthreaded and discarded. No tools are required; hand-tighten only so the seal seats correctly and the housing stays watertight. After fitting, rinse the new sensor and recalibrate the meter against a known conductivity standard before returning it to service.<\/p>\n
Conductivity electrodes wear through fouling and abrasion of the graphite pins rather than through a fixed shelf life. Replace the electrode when the meter drifts between calibrations, will not accept a calibration standard, or gives unstable readings in pool water. In routine commercial pool use, an annual replacement interval is a reasonable planning assumption.<\/p>\n
Supplied as a single electrode only; the meter body, batteries and calibration solutions are not included. Order calibration standard separately so the new electrode can be verified immediately after fitting. Keep a spare on the shelf if the tester is used for daily pool water logging.<\/p>","protected":false},"excerpt":{"rendered":"