Anton Paar GmbH

Amstetten, Austria

Anton Paar GmbH

Amstetten, Austria
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Measuring a topographic profile and/or a topographic image of a surface of a sample includes positioning an indenter out of contact with a sample and in a constant position with respect to a headstock; positioning a topographic tip to detect a surface of the sample and positioning a reference structure at a predetermined distance from said surface; measuring the relative position of the indenter with respect to the reference structure by a relative position sensor; translating said sample perpendicular to said longitudinal axis while maintaining the reference structure at said predetermined distance from the surface of the sample by the feedback control system and the second actuator while measuring the relative position of the indenter with respect to the reference structure by the relative position sensor; and generating a topographic profile and/or a topographic image based on measurements of the relative position.


Device for determining information which is indicative for a particle size and/or a particle shape of particles in a sample, wherein the device comprises an electromagnetic radiation source for generating electromagnetic primary radiation, an electromagnetic radiation detector for detecting electromagnetic secondary radiation which is generated by an interaction of the electromagnetic primary radiation with the sample, and a determination unit which is adapted for determining the information which is indicative for the particle size and/or the particle shape based on the detected electromagnetic secondary radiation, wherein the determination unit is adapted for selectively determining the information firstly by means of an identification and a size determination and/or a shape determination of the particles on a detector image which is generated from the electromagnetic secondary radiation, and/or for determining the information secondly from temporal changes of the electromagnetic secondary radiation between detector images which are generated at different detection points in time.


A fixing device selectively fixes a measuring probe of a scanning probe microscope. The fixing device comprises an inserting unit in which the measuring probe is insertable and a master force unit for selectively exerting a master force onto a fixing mechanism. The fixing mechanism is actuatable without a tool. The fixing mechanism is enabled or disabled to controllably detach or fix the measuring probe when the measuring probe is inserted in the inserting unit.


A method and a measuring device determine the density of liquids. The measuring device has a flexural resonator, at least one sensor for at least one environmental parameter that influences a measurement to be performed and a condition monitoring unit. The measured values from the respective sensor are fed to the condition monitoring unit. The condition monitoring unit has a memory unit with stored forecasts for environmental parameters to be expected in the course of the measurement, and that, by using the condition monitoring unit, on the basis of the stored forecasts and the initial measured values selected for the measurement, it is determined whether the planned measurement can be carried out under the selected trial conditions without any impairment or with a permissible impairment by the forecast changes in the environmental parameters.


A method for actuating an electric motor for a rheometer includes transferring drive energy to a sample. A time profile for deflection is periodic, a value for deflection is a measured variable, the motor is actuated by a manipulated variable, the measured and manipulated variables are mutually nonlinear, an approximation function for the time profile is a weighted sum of base functions, weights for base functions are a parameter vector, the manipulated variable is a weighted sum of base functions. The measured variable is sampled, sampled values are used within a time window, an approximation function for sampled values is a weighted sum of base functions, the weights are an actual parameter vector, a difference between intended and actual parameter vectors is subtracted from the manipulated parameter vector, the manipulated variable is a weighted sum of base functions and values of a new manipulated parameter vector are used as weights.


Patent
Anton Paar GmbH | Date: 2015-06-10

A positioning unit for a carriage is adjustable by way of a linear drive and a base. The linear drive has an elongate part and a short part. The positioning unit has two compensation rods. In each case two adjacent compensation rods are connected together at one end via a joint and are connected at the other end to the elongate part of the linear drive via one of two joint arrangements that are arranged in each case at the end of the elongate part. The compensation rods and the elongate part of the linear drive are arranged in the form of a triangle and the angle between the compensation rods and the joint is variable by a thermal change in length of the elongate part of the linear drive. The carriage is connected to the joint and the short part of the linear drive is connected to the base.


Patent
Anton Paar | Date: 2017-09-13

Surface measurement probe (1) comprising: - a hollow probe body (3; 9, 11, 13, 15) extending along a longitudinal axis and comprising a proximal end adapted to be mounted to a test apparatus and a distal end; - a retaining arrangement (17, 19, 21; 18, 21) situated inside the probe body and extending along said longitudinal axis, the retaining arrangement (17, 19, 21; 18, 21) being arranged to maintain the surface measurement probe (1) in an assembled state; - a probe tip (7) supported at the distal end of the probe body and arranged to contact a sample; - a bead (31) situated inside the probe body (3) and interposed between the probe tip (7) and the retaining arrangement (17, 19, 2; 18, 21), the bead (31) comprising a thermally-insulating material.


Patent
Anton Paar GmbH | Date: 2016-05-20

A measuring instrument for studying fluid samples contains a flexural vibrator. A vibrator tube of which is fixed at at least one clamping position and forms on one side of the clamping position, in particular a carrier unit, a freely projecting vibrator section and on the other side a fluid feed tube section with a feed opening and a fluid discharge tube section with a fluid discharge opening. Accordingly, the vibrator tube is fixed or retained both at its fluid discharge tube section and at its fluid feed tube section with at least one independent holding device provided in addition to the clamping position.


Patent
Anton Paar GmbH | Date: 2016-05-04

Heating arrangement for a materials testing device (100), the materials testing device (100) comprising at least one surface measurement probe (11) adapted to be brought into contact with a surface of a sample (120), the heating arrangement comprising a probe heater (1a) comprising:- an infrared emitting element (3) adapted to emit infrared radiation;- a reflector (5) having a reflective surface (15a) arranged to direct said infrared radiation towards a distal end of said surface measurement probe (11). According to the invention, the reflector comprises a first focal point (7) and a second focal point (9), the infrared emitting element (3) being situated substantially at said first focal point (7).


Patent
Anton Paar GmbH | Date: 2016-05-04

Surface measurement probe (1) comprising:- a hollow probe body (3; 9, 11, 13, 15) extending along a longitudinal axis and comprising a proximal end adapted to be mounted to a test apparatus and a distal end;- a retaining arrangement (17, 19, 21; 18, 21) situated inside the probe body and extending along said longitudinal axis, the retaining arrangement (17, 19, 21; 18, 21) being arranged to maintain the surface measurement probe (1) in an assembled state;- a probe tip (7) supported at the distal end of the probe body and arranged to contact a sample;- a bead (31) situated inside the probe body (3) and interposed between the probe tip (7) and the retaining arrangement (17, 19, 21; 18, 21), the bead (31) comprising a thermally-insulating material.

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