HANNA HI 2315-01

The Hanna Instruments HI 2315 Bench-Top Conductivity Meter with built-in auto-temperature compensation is a multi-range meter with built-in automatic temperature compensation for testing Conductivity. The Hanna Instrument HI2315 replaces EC 215 and features a large, easy to read LCD, solution holders and an attractive redesigned case. The Hanna Instruments HI2315 utilizes a four ring potentiometric probe with platinum sensor that offers greater versatility and accuracy over amperometric designs.

A potentiometric probe works on the principal of induction which eliminates the effects of polarization ( a common problem of amperometric systems) . Two outer rings apply an alternating voltage and induce a current loop in the solution while two inner rings measure the voltage drop induced by the current loop ( which is dependent on the conductivity of the solution) . By utilizing the 4-ring method, it is possible to measure very low to high conductivity levels ( up to 200 mS/ cm) without changing probes.