HANNA instruments HI 23151


HI 23151

The HI 23151 Bench-Top Multi-Range Conductivity Meter is a multi-range meter with built-in automatic temperature compensation for Conductivity measurements. The HI 23151 replaces EC 215R and features a large, easy to read LCD, solution holders and an attractive redesigned case.          
The HI 23151 utilizes a four ring potentiometric probe with platinum sensor that offers greater versatility and accuracy over typical 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.         
The temperature coefficient correction is adjustable from 0 and 2.5%/°C.
HI 23151
Conductivity Range 0.0 to 199.9 µs/cm; 0 to 1999 µs/cm; 0.00 to 19.99 ms/cm; 0.0 to 199.9 mS/cm
EC Resolution 0.1 µs/cm; 1 µs/cm; 0.01 mS/cm; 0.1 mS/cm
Power Requirements 12 VDC adapter (included)
Part Number HI 23151-01 (115V), HI 23151-02 (230V)
Additional Specifications EC Accuracy (@20°C/68°F): ±1% F.s. (excluding probe error)         
Probe: HI 76303, platinum four ring conductivity probe with internal temperature sensor, Din connector and 1 m (3.3’) cable (included


  • Four ring potentiometric platinum probe         
  • Four measurement ranges         
  • ±1% F.s. accuracy         
  • Manual calibration         
  • Analog output         
  • Automatic Temperature Compensation         
  • Large LCD         
  • Built-in Solution Holders         


Hanna Instruments HI 23151

Hanna Instruments HI 23151

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