Structure and Operation
The measurement of fuel level with the CS-27 probe is performed with the use of a simple relation between the height of liquid column and the produced hydrostatic pressure. The probe is composed of two parts: the sensing element and the electronic element, placed inside a steel rod, and aluminum housing. The steel rod is fixed to an aluminum housing which may be sealed. The measuring element is a piezoresistive sensor, separated from the medium by a separating membrane. Pressure measuring is performed at the membrane of the submerged probe (5 mm above tank bottom). Depending on the type of tank (pressurized or nonpressurized tank), pressure measuring is related either to atmospheric pressure or pressure inside the tank.
Assembly and Usage
The CS-27 probe is mounted to the tank cover. A detailed description of assembly is presented in Technical Documentation. The probe is designed to be connected to the following recording devices: - analog input data recorder – current or voltage (current or voltage analog output probe). - recorder or PC computer equipped with a serial RS-232C port (digital output probe).