The HI 99301 is an innovative meter that combines measurements for High Range conductivity, TDS (Total Dissolved Solids) and temperature, housed in a water-resistant case that is rated for IP67 conditions.

The multi-functional HI 76306 probe measures EC/TDS and temperature in one rugged unit. EC (or TDS) and temperature readings are displayed on the LCD simultaneously. Symbols and messages on the LCD indicate the meter status and guide the user through operations. At start-up, the meter shows the remaining battery percentage and when a low battery condition is detected, a battery symbol appears on the LCD to advise the user that only a few hours of working time is left.

The meter is also provided with BEPS (Battery Error Prevention System), which turns the meter off when the battery level is too low, to assure reliable readings. Calibration is a single point, automatic procedure and measurements are automatically compensated for temperature variations. The compensation coefficient and the EC/TDS conversion factor are user-selectable. All settings and calibration data remain in memory when changing batteries.