Is the sensor self cleaning? Does the air-blast system damage the sensor?
To clean the sensor during normal operations, the customer only needs to wipe the sensor with a cloth. For extreme conditions where build-up on the sensor is a concern, Hach Company offers an airblast unit. The airblast unit will not damage the sensor coating on the Hach LDO. In fact, the Hach LDO sensor is capable of surviving harsh environments (with or without an airblast) where other sensors will fail (e.g. pure oxygen aeration basins, floating media, etc).