Described is a measuring drive for a measuring instrument, in particular a rheometer. The measuring drive has: i) a motor, ii) a shaft, which is coupled to the motor in such a way that the shaft is drivable by the motor, and iii) an ultrasonic device, which is configured to provide ultrasound to the shaft in such a way that at least a part of the shaft is bearable substantially without contact by the ultrasound. Furthermore, the measuring instrument, a method, and a using are described.

There are described methods and systems for handling fresh concrete inside a drum. In an aspect, a method of determining calibration data for use in determining workability of fresh concrete inside a rotating drum based on hydraulic pressure is described. This method has receiving a probe pressure value indicative of pressure exerted on a rheological probe mounted inside the drum and immerged in the fresh concrete; determining a workability value indicative of workability of the fresh concrete based on the probe pressure value and on calibration data for the rheological probe; receiving a hydraulic pressure value indicative of pressure of a hydraulic fluid used for rotating the drum; and determining hydraulic calibration data by associating the hydraulic pressure value and the workability value to one another.

An apparatus and method are disclosed for accurately determining viscosity of Newtonian and non-Newtonian fluids in the field or in-service by using a potable field viscometer. The portable field viscometer includes a vertical disposable (or reusable) sample insert tube filled with the liquid which the viscosity is to be determined. Using fins on the needle surface, a needle having a known density is made to fall through the liquid in the disposable (or reusable) sample insert tube coaxially. Using the time that the needle takes to fall between two known distance marks on the extension bar attached the top of the needle or transducers such as light, laser or magnetic, the velocity of the needle falling through the liquid is determined. Thus, the viscosity can be calculated by using the velocity of a needle. In the method, viscosity, shear rate and shear stress can be determined according to the disclosed method.

The present disclosure provides a viscometer for measuring rheological properties of a fluid, based on the fluid level decreasing at a constant rate during efflux, including a vessel with a three dimensional shape defined by the following proportionality

[00001]$x\propto C\times y^{\left(\frac{1}{n}\right)}$

wherein, the symbol ∝ refers to a proportionality, and the variables x and y are coordinates on an x-y cartesian coordinate plane, where x is length and y is height; and n is a variable exponential term between and including 2 and 4; and C is a constant with dimensions of length; and where the vessel comprises a hole at or near the y-coordinate minimum.

Rheometer systems and related methods are provided. In accordance with an example, a rheometer system includes a rheometer and a platform supporting the rheometer and movable between a lowered position and a raised position. The rheometer system includes a fluid receptacle defining an opening. The rheometer system includes a receptacle housing having a housing side and adapted to receive the fluid receptacle. The opening of the fluid receptacle facing the rheometer when the fluid receptacle is received by the receptacle housing. The rheometer system includes a thermoelectric device coupled adjacent to the housing side. The rheometer system includes a controller in communication with the thermoelectric device and adapted to control a temperature of the thermoelectric device.

Described herein are systems and methods for the automated adjustment of flour property measurement equipment such as dough rheometers. The systems and methods allow measurements of flour and dough to be performed on different rheometers with consistent results, regardless of the manufacturer or location of the rheometers. The systems and methods described herein allow a second rheometer, for example, that is deployed in the field to provide results that are consistent with a first dough rheometer, for example, that may be at a different location, or the same location but of the same or different manufacturer. The systems and methods can be used to calibrate, remotely and in real-time, dough rheometers that are deployed in various locations.

A viscosity measurement unit includes a first stage having a first surface, a second stage having a second surface and configured to rotate with the second surface which is opposed and in proximity to the first surface, a motor including a motor body and a shaft that is an output shaft of the motor body and configured to rotate synchronously with the second stage, a fixed member arranged to rotatably support the shaft and the motor body, and a strain gauge unit fixed to the fixed member and configured to be biased by a contact of the motor body when the motor body rotates in a first direction with respect to the fixed member.

Readings produced by an improved slump meter will be the consistent across a wide range of redi-mix units, regardless of the size of the load, make, model, age or condition of the redi-mix unit, therefore any mix consistency can be easily duplicated or created, by producing a common number for each mixer when running and empty, applying a conversion factor to raw hydraulic or electric motor work measurement data, and averaging and to stabilize the output reading on a refreshing period.

Nuclear magnetic resonance (NMR) gas isotherm techniques to evaluate wettability of porous media, such as hydrocarbon reservoir rock, can include constructing a NMR gas isotherm curve for a porous media sample gas adsorption under various pressures. A hydrophobic or hydrophilic nature of the porous media sample can be determined using the NMR gas isotherm curves. A wettability of the porous media sample can be determined based on the NMR gas isotherm curve. The wettability can be determined for porous media samples with different pore sizes. In the case of reservoir rock samples, the determined wettability can be used, among other things, to model the hydrocarbon reservoir that includes such rock samples, to simulate fluid flow through such reservoirs, or to model enhanced hydrocarbon recovery from such reservoirs.

Readings produced by an improved slump meter will be the consistent across a wide range of redi-mix units, regardless of the size of the load, make, model, age or condition of the redi-mix unit, therefore any mix consistency can be easily duplicated or created, by producing a common number for each mixer when running and empty, applying a conversion factor to raw hydraulic or electric motor work measurement data, and averaging and to stabilize the output reading on a refreshing period.