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Volume Flow Sensors

When diagnosing and condition monitoring of hydraulic systems, measurement of volume flow is very important. To measure volume flow, Hydrotechnik offers 4 product families to have the right sensor for every application:

Turbine volume flow meters (HySense® QT) function via the flow principle. A medium flow through a tube in an axial direction makes the turbine wheel turn. The single turns are caught by a signal pick-up which converts the signals into digital impulses.

The gear volume flow meters (HySense® QG) function via the displacement principle. Gearwheels are set in motion via a medium. With each rotation of the gearwheels, a defined amount of liquid is transferred through the volume flow sensor. The rotation movements of the gearwheels are caught by a signal pick-up which converts the signals into digital impulses.

Oval wheel volume flow meters (HySense® QO) function via the displacement principle. Here, two geared oval wheels are driven by the pressure of a liquid. They are rolling on each other. With each rotation a defined amount of liquid is transferred through a counter. The rotations are caught by a signal pick-up which converts the signals into digital impulses.

Load valves with turbine volume flow sensors (HySense® QL) are made for simulation of load conditions. A load can be simulated with the throttle valve to record the characteristic curve of the pump. A load valve combines with a volume flow sensor, a valve and test points for pressure and temperature.

Important suggestion/tips for all volume flow sensors

Each volume flow sensor is delivered with a calibration certificate. Please keep this safe. We recommend a re-calibration of the sensor every 1 or 2 years. Please use the international calibration service of Hydrotechnik through your local distributor. Multiple calibrations for different viscosities for all volume flow sensors are offered.

      

QT (Turbine) QG (Gearwheel) QO (Ovalwheel)
   
QL (Load Valve)