The SensoPro Toroidal Conductivity Monitoring System from Sensorex combines a TCS3020 probe with the new EX2000RS transmitter, featuring Modbus communication for robust system integration. The TCS3020 probe used in the SensoPro system measures conductivity using toroidal sensing technology. These sensors don’t cause polarization or become fouled, and they rarely require maintenance. The transmitter includes one analog output and can monitor conductivity, percent concentration, total dissolved solids, and salinity. 714-895-4344; www.sensorex.com