The HI8614N is a water-resistant pH transmitter is designed to be used with a standard high impedance pH probe with BNC connector. The signal is then processed by a special highimpedance amplifier, which transmits an output current directly proportional to the input signal but independent of changes in load or cable capacitance.Temperature compensation ensures fast, accurately compensated readings even during sudden temperature fluctuations.Water resistant design for use in process control.HI8614LN has optional backlit, LCD display for easy viewing (no LCD on HI8614N).