About EVS 3100 Flow Rate Sensors:
The EVS 3100 series flow rate sensors are designed to accurately measure the flow-through volume of fluids in hydraulic systems. The unit uses a stainless steel turbine wheel internal to the construction, which converts the media flow into a 4 to 20mA output signal. The in-line mounting design allows for most accurate and up to date flow measurements. The EVS 3100 also offers two additional hydraulic ports to accommodate additional sensors, ex. temperature and pressure transducers. The design of the flow meter incorporates a lightweight aluminum housing with accurate and stable measuring elements. The unit uses the Woltmann Turbine principle to measure flow. The fluid enters the housing and passes through straightening blades, which assist in stabilizing the media into a laminar flow. The stainless steel turbine wheel is rotated by the media flow, which then influences the magnetic field of the inductive receiver with the passing of each turbine fin. The inductive receiver is the sensing element of this flow meter. This influence produces a voltage pulse in the receiver, which it then converts into a 4 to 20mA output signal. This design provides precise data within the entire measurement range of the unit, and is relatively tolerant against minimal, gritty contamination. The meter also allows for exceeding flow of up to 50% of the maximum range for short periods of time.