The DO6400 and DO6441 Process Dissolved Oxygen Sensors from Sensorex are reliable, fast-response submersible galvanic sensors available with either a built-in 4-20mA output signal capability for direct connection to a PLC or 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 sensors such as the Sensorex Models DO6400 and DO6441 monitor the amount of dissolved (free) oxygen present in water and wastewater. Wastewater treatment processes frequently utilize aerobic bacteria to breakdown organic compounds in sewage. If the amount of DO in wastewater becomes too low, the bacteria will die; wastewater treatment processes will stop operating efficiently and undesirable septic conditions will occur.
The low maintenance, dependable DO6400 and DO6441 Sensors feature reliable galvanic cell technology and a large volume electrolyte reservoir for long term continuous deployments. The easily replaceable membrane is available in either durable Teflon or wide span HDPE membrane for faster response. An optional integral temperature sensor is also available for both models.
There are two fundamental techniques for measuring DO – galvanic and polarographic. Both sensor technologies use an electrode system where the DO reacts with the cathode to produce a current.
Sensorex galvanic sensors in the DO6400 and DO6441 Series require no external voltage source, which is required with polarographic sensors, providing superior accuracy and lower maintenance for low life-cycle costs.