The invention relates to inspection and measuring technology for use in the calibration, verification and routine monitoring of the metrological characteristics of volume flow and mass flow meters and calibration rigs, primarily for petroleum and petroleum products. The special feature of the present method for monitoring the metrological characteristics of a flowmeter using a bidirectional prover is that the portion of the prover situated at the end of the path of travel of a ball and acting as an accelerator during the opposite movement of the ball is used on said path as an addition to the calibrated portion. The special feature of a bidirectional prover for implementing the present method is the installation of one or more detectors in a closed cross-section of the portion of the prover situated at the end of the travel path. The technical result is an increase in the accuracy and reliability of the measuring results, a reduction in the dimensions, mass and material intensity of the structure, a decrease in the duration of verification operations, and the mobility of the structure.

A dispensing system (100) includes a pour cap (102) which may be connected with the neck of a container (900). The cap base includes a main deck (108), a dispensing spout (110) and a venting tube (112). A flow regulator is mounted on the underside of the main deck such that the flow regulator restricts flow through the opening of the dispensing spout. In some embodiments, the flow regulator is a hinged spring-loaded baffle plate (116). In some embodiments, the flow regulator is a gravity ball valve (316). A visual timing device (200) may be advantageously located on the pour cap (102) so that the timing device is easily visible to a user during operation or use of the dispensing system. The constant flow rate provided by the flow regulator allows the timing device to more precisely measure each pour regardless of how much fluid is in the bottle.

A method for controlling a filling process, wherein a predetermined filling quantity of a medium is filled into a container, the flow rate of the medium flowing into the container is measured as a time series of measured values for the instantaneous flow rate and a filling quantity already filled is estimated from the time series, wherein at least one current measured value of the time series is corrected on the basis of at least one earlier measured value of an earlier time series of measured values of the flow rate of an earlier filling process.

An apparatus and method for operating and calibrating a paint mixture delivery system includes a positive displacement fluid cylinder and a linear transducer that monitors operation of the positive displacement fluid cylinder. A controller is connected to a servo drive whose operation manipulates the performance of the positive displacement fluid cylinder. Operation of the fluid delivery system is controlled such that the ratio of paint or resin to catalyst or hardener can be accurately controlled and calibration of the discrete fluid flow sensors can be quickly and conveniently calibrated to assure delivery of the respective fluids are the desired mixture ratio.

Methods and devices for measuring the volume of a liquid sample transferred from a source to a destination by means of incremental dispensing of the sample into a destination vessel or by means of decremental aspiration of the sample from a source vessel, where the liquid sample is collected from a liquid having known optical absorbance at a known wavelength or within a defined part of the electromagnetic spectrum. The absorbance of the sample is measured by exposing the source or destination vessel to electromagnetic radiation before and after the transfer, and the liquid volume is determined on the basis of differential measurements of absorbance of the source or destination vessel.

The method according to the invention provides a way to continue gravimetric weighing of bulk material during refilling of a gravimetric metered dispensing unit, and to determine the mass of the refilled bulk material using a refilling container during the filling operation material and so determine the actual mass flow discharged during refilling in real time or on average in order to adjust it to a target mass flow.

A verification of a pipette results in a release or a warning message. A liquid measuring container (110) receives the pipette liquid volume (V.sub.P) to be verified. A loading cell (120) is connected to the liquid measuring container in a force-transmitting manner. The loading cell outputs a measurement signal (ms) corresponding to the weight force (F.sub.G) acting thereon. A processing unit (130) detects and processes the measurement signal (ms), determines a first weight force (G.sub.t1) at time point (t.sub.1) and determines a second weight force (G.sub.t2) at time point (t.sub.2). The pipette liquid volume is calculated and the calculated value is assigned to a pipette volume class (K.sub.i) having a defined class nominal value (VK.sub.i). The processing unit tests whether or not an absolute value of the volume difference (ΔV) is within a predetermined tolerance value (T) for the assigned pipette volume class. The processing unit outputs the test result.

An example container for collecting bulk material dispensed from a meter during a calibration operation may include a canister comprising an open end to receive bulk material, a coupler configured to releasably couple to a meter, and at least one weight sensor extending between the enclosure and the coupler. The weight sensor may be configured to detect weight of the bulk material deposited into the enclosure via the open end.

A water meter test bench assembly that includes a fluid source, a discharge pipe, and check valve assembly, is provided. The fluid source also provides fluid pressure to move fluid through the at least one meter. The discharge pipe is fluidly coupled to a valve and configured to receive the fluid that passes through the at least one meter. The check valve assembly is attached to the discharge pipe and is in fluid communication with the opening of the discharge pipe. The check valve assembly is open when the fluid pressure from the fluid source moves the fluid through the at least one meter, the valve, and acts on the check valve assembly. When the fluid pressure is reduced sufficient to close the check valve assembly, the fluid is stopped from passing through the check valve assembly.

A rotary airlock test and demonstration setup, system, and method allowing for rotary airlocks to be tested for air leakage, wear, and particularly for inconsistent wear. The system allows for testing of the rotary airlocks on site utilizing a truck mounted system and even in situ should a portion of the air path for the testing be part of the pneumatic conveyor the rotary airlock would be used with.