It is the ideal tool for the automatic management of sedimentation tanks.
Detecting the height of the layer separating a liquid surface from a solid or between two liquid surfaces of different densities is an almost impossible task for the vast majority of level gauges on the market today. The Terry Ferraris Stratigraph, which uses state-of-the-art ultrasonic technology, is able to perform these measurements with absolute precision, repeatability and accuracy. The Stratigraph is designed to measure the height of layers by detecting the height of the separating surface between one layer and another, and to do this it uses state-of-the-art microprocessors and a SW based on proven algorithms. The measuring device consists of one or two transducers and a control electronics.
The Stratigraph is the ideal tool for the automatic control and management of sludge levels in primary and secondary sedimentation tanks or thickeners of sewage treatment equipment. It works on round/rectangular tanks or tubs and can be used either in a fixed position or mounted on a mobile bridge. The electronics can control two tanks simultaneously using two immersion transducers or one tank with one immersion transducer and one level with one UTF transducer. The Stratigraph is equipped with an effective system for checking for faults or abnormal operation.
The Stratigraph reduces sludge pumping times, eliminates manual measurements, automatically controls sedimentation tanks and thickeners, and optimises the dosing of chemical additives. Transducers can be mounted up to 200 metres from the electronics. The Stratigraph has 2 programmable 0/4 to 20mA outputs, an RS232 digital output, 6 SPDT relays, 5A 240Vac. The graphic display shows the layer level, tank ecoprofile, alarm levels, tank depth and status of multiple tanks.
The transducer operating underwater is equipped with a rotating brush to clean the radiating face of the transducer to avoid material build-up and maintain system performance.
For mobile bridge mountings, the transducer is supplied with a protective rod to prevent it from being damaged. Non-immersed transducers are maintenance-free.