Fast-Response Dissolved Oxygen Sensors

The DO6400 and DO6441 Process Dissolved Oxygen Sensors from Sensorex (USA) are submersible galvanic sensors available with either a built-in 4-20mA output signal capability for direct connection to a PLC or they can be connected to a standard 4-20mA transmitter and local display.

The DO6400 and DO6441 Process Dissolved Oxygen Sensors are ideal for long term continuous deployment in wastewater and aquaculture applications. Their galvanic sensor construction and electronics combine performance, ease of use and low maintenance to offer a reliable low life-cycle cost instrument for use in submerged water applications.

Dissolved oxygen (DO) sensors monitor the amount of dissolved (free) oxygen present in water and wastewater. Wastewater treatment processes frequently utilise aerobic bacteria to break down organic compounds in sewage. If the amount of DO in wastewater becomes too low, the bacteria will die; wastewater treatment processes then stop operating efficiently and undesirable septic conditions occur.

Accurate DO measurement is also critical for aquaculture operations in order to ensure that the organisms being cultivated have access to the levels of oxygen necessary to maintain life. When DO levels are low, fish feeding is reduced and growth is suppressed. Very low levels of dissolved oxygen can lead to extreme stress on fish and even death.