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- D: 243 terms
- DF: a checking facility operating without the intervention of an operator
- DF: a container which is calibrated and for which the results are given in a tank calibration table. This table is used in conjunction with the mass measurement transducer to determine the mass contained in the tank
- DF: a device associated with the instrument which is intended to perform a specific function, e.g. a repeat indication device, ticket printer, card reader, data input terminal, etc.
- DF: a device for converting the analyte into an atomic vapor
- DF: a device intended to perform a particular function, directly involved in elaborating, memorizing, transmitting or displaying the measurement result
- DF: a device other than an ancillary device, required to ensure the correct metrological performance of the system, e.g. valves allowing verification of pressure transducers, atmospheric pressure balancing pipes between pressure transducers, etc.
- DF: a device that receives the output quantity from the transducer(s), checks and transforms it and, if appropriate, memorizes the results until they are used. In addition, the calculator may be capable of communicating both ways with peripheral equi
- DF: a facility that is incorporated in a measuring instrument which enables significant faults to be detected and acted upon
- DF: a facility that is incorporated in a measuring system and enables significant faults to be detected and acted upon
- DF: a part of the meter that receives the output signal from the transducer(s), transforms it and, if appropriate, stores in memory the results until they are used. Additionally, the calculator may be capable of communicating both ways with the perip
- DF: a reference material one or more properties of whose property values are certified by a technically valid procedure, accompanied by or traceable to a certificate or other documentation which is issued by a certifying body
- DF: a set of operations to determine the capacities of a tank at various filling levels
- DF: a solution that contains all the chemicals except for the element to be determined in the same concentration as required for the preparation of a reference standard solution of that element
- DF: a solution that is used to set the zero absorbance on the spectrometer and that normally consists of a pure solvent such as deionized water
- DF: a sub-assembly which receives signals from the flow sensor and the temperature sensors and calculates and indicates the quantity of heat exchanged
- DF: a testing laboratory to which accreditation has been granted
- DF: a value equal to the logarithm of the ratio of the incident light to the transmitted light and is dependent on the path length and the concentration of the absorbing substance
- DF: a zero-setting device that operates automatically and without the intervention of an operator
- DF: a zero-setting device that operates automatically without the intervention of the operator after the belt has been operating empty
- DF: ability of a measuring instrument to maintain its performance characteristics over a period of use
- DF: actual quantity of product that a prepackage in fact contains as determined by measurements made by legal metrology officials
- DF: air contained in the pulmonary alveoli
- DF: alue of metrologically controlled weights that balances the load (taking into account the reduction ratio of the load)
- DF: alue of the difference between a gross or net weight value and a preset tare value
- DF: alue of the difference between a measured weight value (gross or net) and a preset tare value
- DF: amount of heat which would be released by the complete combustion in air of a specified quantity of gas, in such a way that the pressure at which the reaction takes place remains constant, and all the products of combustion are returned to the sa
- DF: amount of substance of the compound dissolved, divided by the volume of the solution
- DF: an indication allowing the determination of an equilibrium position to a fraction of the scale interval
- DF: an instrument that weighs without the intervention of an operator and follows a predetermined program of automatic processes characteristic of the instrument
- DF: an instrument which does not require the intervention of an operator
- DF: an operation involving all relevant internal elements which verifies that the EBA is suitably adjusted
- DF: an unknown test object (or material sample) submitted for measurement to an organization in connection with an assessment of that organization's measurement capabilities
- DF: ange from minimum capacity to maximum capacity
- DF: arameter that specifies a magnetic state of material bodies such as weights, in the absence of an external magnetic field (most generally, magnetization is a vector whose magnitude and direction are not necessarily constant within the material).
- DF: art or device, other than an ancillary device, required to ensure correct measurement or intended to facilitate the measuring operations, or which could in any way affect the measurement
- DF: associated measuring instrument for obtaining the calorific value of gas
- DF: automatic gravimetric filling instrument comprising one or more weighing units and which computes an appropriate combination of the loads and combines them to a fill
- DF: automatic refractometers are instruments in which the liquid sample is supplied to the device automatically, the indication being displayed or printed
- DF: automatic weighing instrument having (a) load receptor(s), inclusive of aprons, that determines the total mass of a road vehicle by weighing the road vehicle in motion
- DF: automatic weighing instrument that weighs pre-assembled discrete loads or single loads of loose material
- DF: battery that is intended to power specific functions of an instrument in the absence of the primary power supply (for example: to preserve stored data)
- DF: battery that is intended to power specific functions of an instrument in the absence of the primary power supply. Example: to preserve stored data
- DF: battery that is: • Mounted in, or connected to, an instrument that can be powered by the mains power as well; and • Capable of completely powering the instrument for a reasonable period of time
- DF: calculated sum or difference of more than one measured weight value and/or calculated net value
- DF: catalytic activity of a component divided by the volume of the original system
- DF: catchweigher that sub-divides prepackages of different mass into two or more sub-groups according to the value of the difference between their mass and the nominal set point
- DF: certificate issued only by authorized or accredited laboratories that record the results of a calibration
- DF: characteristic partial internal absorbance divided by the amount of substance concentration of the analyte. The Beer’s factor is constant for specified experimental conditions
- DF: checking facility operating without the intervention of an operator
- DF: checking facility operating without the intervention of the user
- DF: checking facility that operates without the intervention of an operator
- DF: checking of the declared or alleged identity of a user, process, or device (e.g. checking that downloaded software originates from the owner of the type approval certificate)
- DF: class designation of a weight or weight set which meets certain metrological requirements intended to maintain the mass values within specified limits
- DF: class of liquid-in-glass thermometers that meet certain metrological requirements intended to keep errors within specified limits
- DF: class of load cells that are subject to the same conditions of accuracy [Adapted from VIM:1993, 5.19]
- DF: class of measuring instrument that meets certain metrological requirements that are intended to keep errors within specified limits
- DF: class of measuring instrument that meets certain metrological requirements that are intended to maintain errors within specified limits
- DF: class of pressure balances that meet certain metrological requirements intended to keep errors within specified limits
- DF: closeness of the agreement between the result of a measurement and a true value of the measurand
- DF: collecting line connected via diverting valves to the discharge pipes of the measuring compartments and allowing delivery from any one or several compartments via a common pipework. A compartment connected to a built-in manifold has two possible
- DF: combination of an ionizing radiation source and associated instrumentation that provide uniform and reproducible absorbed dose, or absorbed dose rates, at specified locations within a specific material. The absorbed dose shall be traceable to nat
- DF: combination of either a photon or an electron source and associated instrumentation that provides uniform and reproducible absorbed dose, or absorbed dose rates, at specified locations within a specific material. The absorbed dose shall be tracea
- DF: combination of either a photon or an electron source and associated instrumentation that provides uniform and reproducible absorbed dose, or absorbed dose rates, at specified locations within a specific material. The absorbed dose shall be tracea
- DF: conditions to which the measured volume of gas is converted (examples: base temperature and base pressure).
- DF: containers used for commercial transactions of liquids when they are filled to their nominal volume. To simplify the text, casks and barrels are referred to hereafter by the name “casks” only
- DF: continuous data file containing a time stamped information record of events, e.g. changes in the values of the parameters of a device or software updates, or other activities that are legally relevant and which may influence the metrological char
- DF: design or principle of a software module or hardware unit, or design or principle of a feature that is considered to comply with a particular requirement. An acceptable solution provides an example of how a particular requirement may be met. It d
- DF: determination of the cell-constant by means of the absolute or comparison methods
- DF: device for automatically setting the indication to zero without the intervention of an operator
- DF: device for setting the indication to zero automatically without the intervention of an operato
- DF: device for setting the indication to zero automatically without the intervention of an operator
- DF: device incorporated in the gas meter that only allows the error curve to be shifted generally parallel to itself, with a view to bringing errors (of indication) within the limits of the maximum permissible error (MPE)
- DF: device incorporated in the meter that only allows shifting of the relative error curve generally parallel to itself, with a view to bringing errors within the maximum permissible errors and to set the weighted mean error (see T.2.20) at minimum
- DF: device incorporated in the meter, that only allows shifting of the error curve generally parallel to itself, with a view to bringing errors within the maximum permissible errors
- DF: device incorporated in the meter, that only allows shifting of the error curve generally parallel to itself, with a view to bringing errors within the maximum permissible errors. This device may be either mechanical or electronic
- DF: device incorporated in the meter, that only allows the error curve to be shifted generally parallel to itself, with a view to bringing errors (of indication) within the maximum permissible errors
- DF: device intended to perform a particular function, directly involved in elaborating, transmitting or displaying measurement results
- DF: device intended to perform a particular function, directly involved in elaborating, transmitting or displaying measurement results Main ancillary devices are:
- DF: device intended to perform a particular function, directly involved in elaborating, transmitting or displaying measurement results. Examples:
- DF: device intended to perform a particular function, directly involved in elaborating, transmitting or displaying measurement results. The main ancillary devices are: (a) zero setting device; (b) price indicating device; (c) repeating indicating dev
- DF: device intended to perform a particular function, directly involved in elaborating, transmitting or displaying measurement results. The main ancillary devices are: a) repeating indicating device; b) printing device; c) memory device; and d) commu
- DF: device intended to perform a particular function, directly involved in elaborating, transmitting or displaying results
- DF: device permitting separate verification of one or more main devices of an instrument
- DF: device, connected to the calculator, the correction device or the conversion device, and converting, during the measurement the characteristic quantities (temperature, pressure, density, viscosity, etc.) of the liquid into signals destined for th
- DF: device, other than the main indicating device, connected to a calculator, intended to perform a particular function, directly involved in elaborating, transmitting or displaying measurement results Main ancillary devices are: - repeating indicati
- DF: devices such as indicators that repeat the indication, ticket printers, card readers, data input terminals, etc
- DF: dimensionless quantity numerically equal to a change in the radiance temperature of the tungsten ribbon (in °C) under changes in the base temperature by 1 °C at constant lamp current
- DF: document provided by the national responsible body indicating confidence that an identified weight or weight set, or samples thereof, is in conformity with the relevant requirements of this Recommendation
- DF: electronic device of an instrument that performs the analog-to- digital conversion of the output signal of the load cell, further processes the data, and supplies the weighing result in a digital format via a digital interface without displaying
- DF: electronic device of an instrument that performs the analog-to- digital conversion of the output signal of the load cell, further processes the data, and supplies the weighing result in a digital format via a digital interface without displaying
- DF: electronic device of an instrument that performs the analog-to- digital conversion of the output signal of the load cell, further processes the data, and supplies the weighing result in a digital format via a digital interface without displaying
- DF: element or device, other than ancillary, required to ensure correct measurement or intended to facilitate the measuring operations, or which could in any way affect the measurement. Examples of additional devices are: - filter; - flow conditionin
- DF: expression in the form of a table, of the mathematical function V(h) which represents the relation between the height h (independent variable) and the volume V (dependent variable)
- DF: facility incorporated in a measuring system which: checks for the presence of a necessary device,
- DF: facility incorporated in a water meter with electronic devices and Th which enables significant faults to be detected and acted upon
- DF: facility incorporated in an electronic automatic level gauge that enables: - significant faults; and/or
- DF: facility performing the adjustment of the instrument as programmed without the intervention of the user, to initiate the adjustment or its magnitude
- DF: facility that is incorporated in a measuring instrument and which enables significant faults to be detected and acted upon
- DF: facility that is incorporated in a measuring system and which enables significant faults to be detected and acted upon
- DF: facility that is incorporated in the instrument and that enables significant faults to be detected and acted upon
- DF: facility which is incorporated in a measuring system and which enables significant faults to be detected and acted upon
- DF: facility, operating without the intervention of an operator, which is incorporated in an instrument and which enables significant faults to be detected and acted upon [OIML D 11: 2004, 3.18 and 3.18.1]
- DF: flow of argon gas between the intermediate and center (injector) tubes of an ICP torch that is used to adjust the position of the plasma optimally above the load coil
- DF: flow of argon gas directed through the nebulizer for transporting the aerosol sample through the injector and into the plasma
- DF: focimeter with a continuous scale
- DF: for a particular copy of a pattern, the identification, by reference to all possible variables and constraints, of all measurements for which it may hypothetically be used and of all the sets of conditions under which these measurements can legal
- DF: fraction of the absorbance of the solution on which the measurement is made due to a specified component
- DF: fuel dispenser providing mixtures of various grades of a single product or blends of more than one product through a single nozzle; examples include gasoline (a multigrade-dispenser) and mixtures of gasoline and lubricating oil (a gasoline-oil-di
- DF: gas introduced in order to transport a sample for analytical purposes. In gas chromatography it is the gas which is passed continuously through the column and whose passage promotes the elution of the components of the sample. The carrier gas, to
- DF: gas introduced in order to transport a sample for analytical purposes. In gas chromatography it is the gas which is passed continuously through the column and whose passage promotes the elution of the components of the sample. The carrier gas, to
- DF: graphical representation of the relationship between dosimeter response and absorbed dose for a given dosimetry system
- DF: half the sum of the maximum and minimum number of loads per fill that can be set by the operator or, in cases where the number of loads per fill is not directly determined by the operator, either the mean of the actual number of loads per fill (i
- DF: he equipment for conveying the product by means of a belt resting on rollers turning about their axis
- DF: historical record (or continuous data file) of the instrument data, adjustments and weighing operations. Checks can be made to ensure that adjustments and weighings have been carried out in accordance with the appropriate parts of this Recommenda
- DF: identification or classification of instruments according to characteristics that may include the measured quantity, the measuring range, and the principle or method of measurement
- DF: identification or classification of instruments according to unique metrological and technical characteristics that may include the measured quantity, the measuring range, and the principle or method of measurement
- DF: indicated value of a quantity Y minus a true value of a quantity i
- DF: indication allowing the determination of equilibrium position to a fraction of the scale interval
- DF: indication allowing the evaluation of an equilibrium position to a fraction of the scale interval
- DF: indication enabling the evaluation of the equilibrium position to a fraction of the scale interval
- DF: inflatable component of the cuff
- DF: instrument connected to the calculator or the correction device for measuring certain gas properties, for the purpose of making a correction
- DF: instrument fitted with the appropriate safety and dust control features
- DF: instrument for measuring certain measurands which are characteristic of the gas (temperature, pressure, calorific value, etc.) and which are used by the calculator with a view to making a correction and/or a conversion
- DF: instrument indicating apparent mass that is sensitive to the following forces:
- DF: instrument intended to measure automatically and display the level of the liquid contained in a tank with respect to a fixed reference. An automatic level gauge includes at least a liquid level sensor, a transducer, and an indicating device
- DF: instrument that measures without the intervention of an operator and follows a pre-determined program of automatic processes characteristic of the instrument
- DF: instrument that weighs and follows a pre-determined program of automatic processes characteristic of the instrument
- DF: instrument that weighs and follows a predetermined program of automatic processes characteristic of the instrument
- DF: instrument that weighs without the intervention of an operator and follows a predetermined program of automatic processes characteristic of the instrument
- DF: instrument which fills containers with predetermined and virtually constant mass of product from bulk by automatic weighing, and which comprises essentially automatic feeding device(s) associated with weighing unit(s) and the appropriate control
- DF: instrument which weighs without the intervention of an operator and/or follows a predetermined program of automatic process characteristic of the instrument
- DF: instruments connected to the calculator or the correction device, for measuring certain quantities which are characteristic of the gas, with a view to making a correction
- DF: instruments connected to the calculator, the correction device or the conversion device, for measuring certain quantities which are characteristic of water, with a view to making a correction and/or a conversion
- DF: internal device of the tank or compartment, e.g. a partition wall or obstacle inside the tank, intended to damp the movement of liquid during transport and to increase the mechanical stability of the tank
- DF: Issuing Authority or National Responsible Body that applies to be a Participant in a particular DoMC
- DF: lens bringing a paraxial pencil of parallel rays to two separate line foci mutually at right angles and hence, unlike a spherical lens, having two principal powers
- DF: loading of a measuring compartment from the bottom through a standardized dry adapter (e.g. an API adapter) and the bottom valve that is integrated into the bottom of the measuring compartment and opened for this purpose
- DF: logarithm to base ten of the reciprocal of the transmittance
- DF: means allowing the adjustment of the gas analytical system by the user
- DF: means performing the adjustment of the gas analytical system as programmed without the intervention of the user, to initiate the adjustment or regulate the measurement signal
- DF: measure of the ability of a medium to modify a magnetic field. It is related to the magnetic permeability (µ) by the relation: µ / µ 0
- DF: measurement of the extent of the surface of a leather material held or supported to ensure that the material is presented for measurement in a form that removes the three dimensional characteristics of the material
- DF: measures which are filled as required and used for the retail sale of drinks sold by volume. They are divided into two categories: transfer measures used solely for decanting specific volumes of beverages and drinking measures used also for the c
- DF: mobile measuring system intended for refuelling aircraft, supplied from a tank mounted on the vehicle
- DF: mobile measuring system intended for refuelling aircraft, supplied from hydrant pits
- DF: movable rail or bar used as the reference axis for spectacles during measurement, which is aligned perpendicularly to the optical axis of the focimeter and parallel to the 0° – 180° axis direction
- DF: National Issuing Authority and/or National Responsible Body of an OIML Corresponding Member that voluntarily takes part in a DoMC by indicating in writing its willingness to accept and utilize Test Reports
- DF: operating mode of a self-service arrangement in which the supplier is present and controls the authorization for the delivery
- DF: operation that brings the measuring system into a condition suitable for the commencement of the delivery
- DF: operational life cycle of a measuring instrument after its putting into service, i.e. a measuring instrument in use, after repair, relocated, or rebuilt that may be resold
- DF: organization that has been authorized by the national responsible body to provide a declaration of conformity of a manufactured measuring instrument to legal requirements
- DF: part of the ALG that receives the output signals from the transducer and, if applicable, from ancillary devices and/or other devices, processes them and, if appropriate, stores the results in memory until they are used. In addition, the calculato
- DF: part of the associated measuring device that provides an output quantity for the calculator, the correction device or the conversion device, and having a determined relationship to the input quantity
- DF: part of the associated measuring device, directly affected by the measurand, which converts the characteristic quantity (temperature, pressure, density, viscosity, etc.) of the liquid into a measurement signal (resistance, electrical current, fre
- DF: part of the gas meter which receives the output signals from the measuring transducer(s) and, possibly, associated measuring instruments, transforms them and, if appropriate, stores the results in memory until they are used. In addition, the calc
- DF: part of the measuring system that receives the output signals from the flow measuring device(s) or from another calculator and possibly from the associated measuring instruments, transforms them, and, if appropriate, stores the results in memory
- DF: part of the meter that receives the output signals from the measuring device(s) and, possibly, from associated measuring devices, processes them and, if appropriate, stores the results in memory until they are used. In addition, the calculator ma
- DF: part of the meter which receives the output signals from the transducer(s) and, possibly, from associated measuring instruments, transforms them and, if appropriate, stores the results in memory until they are used. In addition, the calculator ma
- DF: part of the weigh zone that is not the load receptor but which is located on either end of the load receptor
- DF: part or device, other than an ancillary device, required to ensure correct measurement or intended to facilitate the measuring operations, or which could in any way affect the measurement Main additional devices are: - filter; - device used for t
- DF: person that is allowed to perform specified activities on legally controlled measuring systems or components, under applicable national laws
- DF: private body authorized (licensed) to perform certain activities in legal metrology beyond the scope of metrological supervision (especially activities of metrological control: certification of a measuring instrument, initial and subsequent verif
- DF: procedure by which an authoritative body gives formal recognition that a body or person is competent to carry out specific tasks (ISO/IEC Guide 2, 12.11)
- DF: property of a component corresponding to the catalyzed substance rate of conversion of a specified chemical reaction in a specified measurement system
- DF: public (government or local government) body authorized by law on a national level to be responsible for metrological supervision as a whole or in part
- DF: quantity characterising a container of a given form and dimensions, for a given position of the level of liquid with respect to the electrodes (geometrical characteristic of the cell).
- DF: quotient of dē by dm, where dē is the incremental mean energy imparted by ionizing radiation to a quantity of matter of mass dm. The unit for absorbed dose is the gray (Gy), where 1 Gy
- DF: range of weight values close to a set point outside which the weighing results may be subject to excessive relative error
- DF: reciprocal of the paraxial value of the back vertex focal length measured in metres
- DF: reference material, accompanied by a certificate, the spectral absorbance of which is certified by a procedure which establishes metrological traceability to a national or international standard of absorbance, and for which each certified quantit
- DF: reference material, accompanied by documentation issued by an authoritative body and providing one or more specified property values with associated uncertainties and traceabilities, using valid procedures
- DF: reference material, accompanied by documentation issued by an authoritative body and referring to valid procedures used to obtain a specified property value with uncertainty and traceability
- DF: relationship between the values of the radiance temperature of the tungsten ribbon and the values of the current in its circuit
- DF: report issued by a Testing Laboratory that includes the results of additional tests and examinations, additional to those in the OIML Recommendation, accepted in the scope of a Declaration of Mutual Confidence (DoMC).
- DF: reservoir for the thermometer liquid
- DF: residual prismatic error of the instrument with no lens in place
- DF: result of a measurement minus the (conventional) true value of the measurand
- DF: result of measurement minus the reference value of the measurand
- DF: result of the process of authentication (passed or failed)
- DF: set of electronic and/or paper records that provide for a complete examination of measured variables, parameter settings and calculation results to check the accuracy of a measurement and any necessary corrections
- DF: set of operations carried out on a measuring system so that it provides prescribed indications corresponding to given values of a quantity to be measured
- DF: set of operations carried out to establish, under specified conditions, the relationship between the liquid level in the tank and the volume of that liquid
- DF: set of operations that establish, under specified conditions, the relationship between values of quantities indicated by a measuring instrument or measuring system, or values represented by a material measure or a reference material, and the corr
- DF: set of operations that establish, under specified conditions, the relationship between values of quantities indicated by a measuring instrument or measuring system, or values represented by a material measure or a reference material, and the corr
- DF: set of values of absorbed dose for which the error of the dosimetry system is intended to lie within specified limits
- DF: short, optional scale, either at the lower end or the upper of the thermometer, that contains a reference point, usually the ice point (0 °C)
- DF: solution of known concentration of the analyte providing the independent variable of the calibration function
- DF: solution similar to the sample solution but which does not contain the analyte
- DF: solution that is prepared in the same way as the sample solution but does not contain the element or elements to be determined
- DF: specified conditions to which the measured quantities of gas are converted
- DF: specified conditions under which the measured volume of liquid is converted (example: temperature, density, pressure).
- DF: specified quantity of alanine in a defined physical form in which ionizing radiation produces an identifiable EPR signal that can be related to absorbed dose
- DF: specified values of the conditions to which the measured quantity of liquid is converted (example: base temperature and base pressure of the liquid)
- DF: splacement of the initial position after the elastic sensing element has been submitted to nominal pressure, to overload pressure, or to another pressure over a certain period of time
- DF: stable gas mixture of known SO concentration (volume 2
- DF: standard that is used in a statistical control process to provide a “check” to ensure that standards, measurement processes and results are within acceptable statistical limits
- DF: sum of individual prepackage errors considering their arithmetic sign divided by the number of prepackages in the sample
- DF: system used for determining absorbed dose consisting of alanine dosimeters and an EPR spectrometer.
- DF: systematic, independent and documented process for obtaining audit evidence and evaluating it objectively to determine the extent to which audit criteria are fulfilled [ISO 9000:2000, 3.9.1]