Sensaphone FGD-0325 Dissolved Oxygen Transducer

This is the only optical dissolved oxygen sensor that outputs directly 4-20 mA for the %-saturation and concentration (mg/l or ppm). Optical DO sensors offer advantages over electrochemical DO sensors in that they are inherently self-referencing, and require no warm-up period. These sensors do not require constant flow to maintain a stable reading and are less affected by fouling. Maintenance is trivial. The sensor membrane lasts for approximately 2 years and is inexpensive to replace. The body is corrosion resistant and designed to stand up to the harsh environment of wastewater. No sensor on the market packs as much into one small package at such an affordable price.