Abstract: A measurement apparatus for determining a measure for the solid content of a liquid toner. The liquid toner includes a carrier liquid with marking particles, and the solid content is the ratio of the mass of the marking particles divided by the mass of the liquid toner. The measurement apparatus includes a measurement space for receiving liquid toner. The measurement space includes at least one hydrostatic pressure sensor configured and arranged for measuring data representative for the hydrostatic pressure caused by the liquid toner at least one predetermined position in the measurement space. The measurement apparatus also includes a controller configured for receiving the measured data and for determining a measure for the solid content of the liquid toner based on the received data.

Abstract: A device and a method for an accelerated oxidation test of fuels or petroleum products, as well as a computer program for controlling such a device, and a corresponding computer readable storage medium, which are applicable, in particular, for the simulation of the aging of fuels or petroleum products. A device for an accelerated oxidation test of fuels or petroleum products is proposed, whereby the device comprises of a pressure vessel (1) to hold specimen (2) of fuels or petroleum products, and the pressure vessel (1) contains at least one device to change the temperature. A corresponding method provides that a specimen (2) of fuel or petroleum product is placed in a pressure vessel (1), the specimen is brought to a predefined temperature above 100° C. by at least one device to change the temperature, which is placed in the pressure vessel (1) and/or in the specimen (2), and the absolute pressure value is monitored so as to determine the oxidation.

Abstract: A side-hole optical cane for measuring pressure and/or temperature is disclosed. The side-hole cane has a light guiding core containing a sensor and a cladding containing symmetrical side-holes extending substantially parallel to the core. The side-holes cause an asymmetric stress across the core of the sensor creating a birefringent sensor. The sensor, preferably a Bragg grating, reflects a first and second wavelength each associated with orthogonal polarization vectors, wherein the degree of separation between the two is proportional to the pressure exerted on the core. The side-hole cane structure self-compensates and is insensitive to temperature variations when used as a pressure sensor, because temperature induces an equal shift in both the first and second wavelengths. Furthermore, the magnitude of these shifts can be monitored to deduce temperature, hence providing the side-hole cane additional temperature sensing capability that is unaffected by pressure.

Abstract: The present invention is directed to a filter module that may incorporate sensors to measure various characteristics of fluid flow and filtration. The sensors may be MEMS and may measure the temperature, flow rate, pressure, etc. of the fluid. Sensor measurements may be used to determine the occurrence of harmful events, such as cavitation or particle breakthrough, or to predict the remaining service life of a filter element.

Abstract: The invention relates to a method for determining an analyte in a solution. This method includes the following steps: a) fixing and immobilizing said analyte, for example via the presence of a ligand L, on the inner surface of a conduit (3) having a reduced cross section over all or part (9) of it, and b) determining the variation in load loss of a fluid circulating inside the conduit, due to the analyte P which has been fixed and immobilized at least in the reduced cross section part (9) of said conduit during step a).