Glossary

Glossary

A | B | C | D | E | F | G | H | I | J | K | L | M |

N |O | P | Q | R | S | T | U | V |W |X | Y | Z |

 

 

A
Accuracy
The degree of agreement between the displayed and true value of the quantity measured. Accuracy of a scale's results must be looked at based on the accuracy of the whole system and not just one component. This includes the environment in which the scale is used, what is being weighed, the operator's use of the scale and how the scale is maintained. The accuracy of the scale should be appropriate for the application and the cost of the item being weighed.
Accurate
A piece of equipment is accurate when its performance or value conforms to the standard within the applicable tolerances and other performance requirements
Alibi Memory
A dedicated memory module which records a series of weighments and additional information for the purposes of traceability.
Alpha Numeric
Denoting a set of characters which contains both letters and numbers.
Ambient Temperature
The temperature of the medium surrounding the load cell.
Analog Input or Remote Input
An additional input on a scale that allows a remote base to be attached to the scale for two-platform counting. This allows the counting scale to provide the precision of a smaller scale while the remote base provides a higher capacity than the counting scale. The actual counting resolution will be bounded by the capabilities of the counting scale. Applications include annual inventories or packaging where a counting scale is connected to a floor scale base, with the counting scale determining the Average Piece Weight of the parts and the floor scale base providing a higher capacity for counting large boxes of parts.
Analytical Balance
An electronic balance characterized by a precision/capacity ratio of 1/500,000 or better and a readability of 0.1 mg or better, often with a draftshield to minimize disturbances to the weighing platform.
Approval Seal
A label, tag, stamped or etched impression, or the like, indicating official approval of a device.
Auto Add
Software included in advanced counting scales which ensures a specific sample weight accuracy for parts counting based on the minimum Average Piece Weight of the scale. If the sample weight is too light, it prompts the operator to add a set number of additional parts until the desired level of sample weight accuracy is met.
AutoCal
A type of span calibration for scales with a single internal calibration mass, where the scale initiates a calibration automatically based on a change in temperature.
Automatic Tare
A tare function where the scale automatically records the tare weight based on the first item placed on the scale. May be set for a set period of time for the tare weight to be accepted.
Auto Off
A software routine that turns off a scale after a set period of inactivity which may be set through menu options on a scale.
Auto Optimization
Software included in advanced counting scales which minimizes hand counting errors of the sample. Instead of hand counting a large number of pieces for a sample, the operator can place a smaller sample on the scale, and then add successive groups (of less parts than the total number of parts on the scale for the sample) to achieve a higher level of Average Piece Weight accuracy. Auto Optimization will continue as long as the number of new pieces added is equal to or less than the number of pieces already on the scale. If more pieces than the number on the scale are added, the scale will stop Auto Optimizing and set the Average Piece Weight to the last recorded Average Piece Weight. By using Auto Optimization, an operator can use a very large sample without having to hand count the entire sample at once (for example, 10 batches of 10 pieces each instead of 100 pieces at one time), reducing errors.
Auto Zero Tracking (AZT)
A feature in most OHAUS products which continuously and automatically maintains a zero indication with no applied load on the scale. Only affects weighments around zero - does not affect weighments where tare value is used. Most OHAUS products allow user to select 0.5, 1 or 3 divisions of Auto Zero Tracking, or to turn Auto Zero Tracking off. For operations using very small additions of liquid or powder, Auto Zero Tracking can cause an incorrect weight display by capturing the weight change -- the solution is to either use a Fill Mode or turn Auto Zero Tracking off (if allowed).
Average Piece Weight (APW)
The average net weight of each piece (or part) in a sample recorded by dividing the net weight of all pieces together by the number of pieces in the sample.
Avoirdupois Weight
A system of measure based on the pound unit that equals 16 ounces, or 7,000 grains that is equal to 453.59 grams.
 

B

Backlight
The background lighting element on a display, usually an LED backlight to a LCD display. May be set through menu options on a scale.
Balance
An instrument for weighing, usually of higher resolution and capacity of 8kg or less.
Beam
A bar or structural member, usually horizontal, supported at either or both ends and sometimes at one or more intermediate points, subjected to loads that tend to bend it.
Beam Scale
A scale where the weight on the platform are indicated solely by means of one or more weigh-beam bars either alone or in combination with counterpoise weights.
Beeper
An audible prompt given by a scale when a condition is reached (for example, a weight within an acceptable range).
Below Balance Weighing
Allows users to weigh from below the balance, instead of using the weighing platter above. Ideal for measuring the density of objects by weighing them below the balance, both inside and outside of a container filled with water.
Bench Scale
A scale adapted for use on a counter or bench, often for industrial applications. Usually of a higher capacity and lower resolution than a balance.

C

 

Calibration
Comparing and adjusting a measuring instrument to a reference point or standard unit of measure - in the case of scales, to a known mass. Calibration is critical to accuracy, as all weighing instruments are affected by local gravity. Most scales are calibrated at the factory, but they can be affected by shipment, so calibration should be verified at installation and performed periodically to maintain accuracy. How often to calibrate a scale is based on the role of the scale, with the more critical the scale or balance is to an operation, the more often it should be calibrated, as well as how harsh the environment is on the scale. Periodic calibration may also be defined by certification requirements (such as legal for trade) as well as by the operations' standard operating procedures. Calibration can be Manual (adjusting a screw), Semi-Automatic (user is prompted by scale to place calibration mass on platform), or Automatic (the balance calibrates itself when needed).
Calibration Curve
A record (graph) of the comparison of load cell outputs against standard test loads.
Calibration Test
A test routine where a required calibration mass is compared to the mass stored in a scale's memory, with any difference displayed.
Capacity
The maximum weight measureable by the scale on its platform, when combined with a minimum load value (usually 0), defines the scale's Weighing Range.
Chain Tare
A series of tare functions where a container is tared, a net weight recorded, and then the gross weight is tared to allow weighing a new ingredient - usually used in formulation. May be repeated up to the capacity of the scale.
Checkcounting
Counting products with checkweighing limits (for example filling boxes with a set range of part pieces per box).
Checkweigher
A weighing device which receives individual objects or packages, determines precisely the weight of each, compares that weight with a predetermined standard, and generates signals which distinguish items as being correct or incorrect.
Checkweighing
Displaying the weight of an object as it relates to an acceptance range (Over, Under or OK), often with additional indications like red, yellow or green LEDs. Used for checking product weights for uniformity or for creating equal portions of a product. Common applications include food and other packaging, filling and quality control checks.
Counterpoise Weight
An adjusted, removable, (usually) slotted weight, intended to counterpoise an applied load of designed weight value.
Counting Resolution
The highest count a scale can support based on the capacity divided by the minimum Average Piece Weight. May refer to an external counting resolution, which can be displayed by the scale, or an internal counting resolution used as part of the counting process.
Crane Scale
A scale specially designed for weighing heavy loads while being handled by a crane.
Creep
The change in load cell output occurring with time while under load and with all environmental conditions and other variables remaining constant.
Creep Error
The change in output occurring with time, while under constant load. Specification is given as +/- d value, based on the test used.
Custom Unit
A weighing unit established by the user, with the form of Factor multiplied by 10^Exponent, with Factor, Exponent and Least Significant Digit (readability graduation) set by user.

D


d
Symbol for the minimum division (d) that can be indicated or recorded.
Deadload
The weight of the platter and weighing frame on the load cell.
Density Determination
The density of a solid, liquid or gas can be determined using a balance or scale, where Density = Mass / Volume. Density can be calculated using a weigh below feature, based on several methods for liquids and gases. The balance automatically calculates and guides the user through the density determination procedure. Results can be printed or sent to a computer.
Deviation
A statistically derived value representing the randomness among independent measurements of the same true value.
Differential Weighing
Automatically calculates the difference between two different weighing results without the need for a transcription or calculator. Print or send the data to a computer.
Direct Sale
A sale in which both parties in the transaction are present when the quantity is being determined.
Display Hold
Manually or automatically holds the last stable weight on the balance display. This mode is perfect for weighing oversized objects that may obstruct view of the displayed weight reading.
Dual-Mass Auto-Cal
A type of three-point calibration for scales with dual internal calibration masses, where the scale initiates a calibration automatically based on a change in temperature.
Dual Range
A weighing range where a portion of the range has a higher readability than the rest of the range, as limited by the capabilities of the scale.
Dynamic (or Animal) Weighing
Weighing an object that is moving, or where the environment is making it move, with a set time for averaging weighments to provide a weight result. Common applications include livestock pens, veterinarian use, and boxes in unstable environments.

E


Electromagnetic Interference (EMI)
Electrical disturbances which propagate into electronic and electrical circuits and cause deviations from the normally expected performance. The frequency range of the disturbance covers the entire electromagnetic spectrum.
Excitation, Electrical
The voltage or current applied to the input terminals of the load cell.

F


Filling
By setting a target weight, this mode provides a user friendly graphic representation of the filling process and how near the end user is to the target fill weight. Results can be printed or sent to a computer. Often used for weighing powders and light liquids.
Filter
A software routine that limits the effects of environmental disturbances on a scale. May also be called Averaging level.
Fliptop Draftshield
The OHAUS Flip-Top draftshield (Adventurer Pro).gives you an easy access to the weighing chamber, even when using a pipette or lab spoon.
Floor Scale
Any platform scale designed for installation with the platform surface at or near floor level.
Formulation
Repeatedly and easily reproduce any recipe of ingredients you need. The balance will ask you to add each ingredient that you identified in the correct amounts, and will track and document the results upon completion. Results can be printed or sent to a computer.

G


g
Symbol for gram.
General Weighing
Mass measurement as expressed in up to 20 different units of measure, as well as user definable custom units. OHAUS laboratory products have capacities as great as 32kg, and resolutions as high as 0.01mg. Results can be printed or sent to a computer.
Geocode
A software routine which allows the initial, factory calibration to be adjusted to allow for the difference between the local gravity of the installation location and the factory location.
GLP / GMP (Good Laboratory Process or Good Manufacturing Process)
Good Laboratory Process or Good Manufacturing Process. These are systems for process and quality control in laboratories and manufacturing. For scales, this is a print mode which allows the user to trace information for weighment time and date, scale user ID, project ID and scale ID. The results may be output to a printer or PC using an RS232 port or other communication port.
Graduation
The minimum unit of readability set by a scale.
Gravity
The accelerating tendency of bodies toward the center of the earth. Its symbol is "g", and its value varies geographically. Gravity affects all weighing instruments at different elevations, so balances and scales should be calibrated onsite after installation.
Gross/Net/Tare Weighing
Selectively displays any combination of Gross/Net/ or Tare weight based on the user's choice. Results can be printed or sent to a computer.
Gross Indicator
A display element that indicates a gross weight (as opposed to a Net or Tare weight) to the operator.
Gross Weight
The weight of a quantity of goods, including the container and wrapping which contains the goods; the total weight of the merchandise or goods without deduction for dunnage, tare, or waste. Equal to Net Weight of the item plus the Tare Weight of the container. Not used in legal for trade applications as the basis for sale.

H


Hanging Scale
Any scale designed to be hung from an overhead support, and whose load-receiving element is suspended from the scale.
Hertz
The unit of frequency; one cycle per second symbolized by Hz.
High Point Weighing
The balance will automatically remember and hold the highest weight reading which occurs in a series of weighings. Results can be printed or sent to a computer.
Hook Weight
A form of counterpoise weight with an attached hook, usually intended for use in testing rather than as an accessory in weighing.
Housing
An enclosure around the working mechanism of a scale or scale indicator.
Hysteresis
The difference between two indicated or represented values for any given test load, one obtained by increasing the loading from zero to the given test load, and the other obtained by decreasing the loading from the maximum rated load to the given test load.
Hysteresis Error
The difference between two readings at the same load point as the scale is loaded and unloaded. Affected by Creep Error.

I


I/O Settings
Settings for an input/output device like AC or DC relays. These settings will govern how the device operates when certain weight conditions are reached. Often used for controlling external equipment based on weight as part of a process.
InCal
A type of span calibration for scales with a single internal calibration mass, where the operator initiates a calibration manually which is then automatically performed by the scale.
Increment
The value of the smallest unit that can be indicated or recorded by a digital device in normal operation.
Indicator
A device which indicates weight by converting the original weight signal to a form of display, regardless of its location relative to the load receiving element.
Ingress Protection
The degree of protection the housing or construction of a scale provides to its mechanism. May be to the National Electrical Manufacturers Association (NEMA) standard or Industrial Protection Code (IP) developed by the International Electrotechnical Committee. IP states protection against penetration and water resistance only but can be applied to components (like load cells), while NEMA specifically states protection against icing, corrosion, oil and coolants but refers to enclosures only. In OHAUS products, often refers to the products ability to withstand water infiltration for industrial or food applications. For most light washdown applications, either NEMA 4 (protection against hose-directed water) or NEMA 4X (protection against hose-directed water and corrosion), or IP65 (dust tight and water-jet protected) or IP67 (dust tight and able to withstand temporary immersion in water) may be used. Whenever possible, compare the NEMA rating and the IP rating of a product.
International Prototype Kilogram
The cylinder of platinum-iridium deposited at the International Bureau of Weights and Measures and declared to be the international prototype of the kilogram by the First General Conference on Weights and Measures. This is the fundamental "Standard" from which all metric standards of mass are derived.

J


Jewelers Scale
One adapted to weighing gems and precious metals.

K


Key Beep
An audible prompt given when a key is pressed on a scale.
Key Lock
A submenu of settings to control specific keys functions on a scale.
Kg
Symbol for kilogram.
Knob Weight
A form of weight provided with a machined knob for lifting purposes.

L


Lb
Symbol for pound.
Legal For Trade
A term used to indicate that the scale is approved for use in commercial transactions, where items are bought and sold by weight, volume and/or length; though there may be additional applications for which approved scales must be used (Prescribed Applications). Legal For Trade (LFT) standards seek to make sure that the scale or balance performs consistently within predetermined maximum permissible errors, it has been calibrated properly and that the calibration cannot be changed. Some LFT standards include NTEP certification (US), Measurement Canada Approval (Canada), OIML (International) and EC-type Approval (Europe).
Leveling Foot
In a small capacity scale, especially one designed to be moved from place to place, an adjustable foot provided to aid in leveling the scale.
Library Memories
Memory designated for specific information on a number of items (SKU, Average Piece Weight, etc.).
Linear Calibration
A combination of a span calibration and a linearization of the curve, usually based on 0%, 50% and of 100% capacity. May be 3 or more points on the weighing curve.
Linearity Error
The deviation of the scale's displayed results compared to a theoretical straight line between 0 and maximum capacity -- the higher the value, the less linearity accuracy.
Linearization
Correcting for linearity error by a calibration which linearizes the error, forcing the actual displayed results closer to a 1:1 ratio between platform and displayed weights. May be performed at three points (0, mid-range and full capacity) or more.
Load
The weight or force applied to the load-receiving element.
Loadcell
A transducer which translates downward force into a proportional electrical signal, which is then converted and adjusted by hardware and software to display a weight on an indicating element.

M


Mass & Weight
Weight is the force caused by a body's mass as affected by local gravity, such that Force = Mass * Gravity. Mass is the fundamental characteristic of a body which causes it to exhibit inertia; the quantity of material in a body, as differentiated from its size or weight. Electronic scales measure force, which is converted into a mass value based on a conversion factor derived by calibrating the instrument. Local gravity variance (depending on location on Earth) is compensated for by calibrating the scale again or entering a Geocode (conversion factor).
Menu Lock
A submenu of settings to control access to specific menu options in a scale's software.
Metric System
A decimal system of weights and measures, of which the gram is the fundamental unit of mass and the meter is the fundamental unit of length.
Metrology
The science of weights and measures.
Moisture Determination
OHAUS makes a complete line of thermogravimetric moisture analyzers which can very rapidly calculate percent moisture, percent solid, and percent regain in a given sample, with precision up to 0.01%. These analyzers are perfect for a wide variety of applications, ranging from quality control to waste water analysis.

N


Negative Checkweighing
Checkweighing out of a container, determining when the removed material is within the target range using pre-set values.
Negative Parts Counting
Counting parts out of a container on a scale, with the parts count at 0 and subsequent removals of parts represented as negative parts counts. Also called Counting Out. Allows quick parts counting from boxes of parts without need for additional containers. Can be done based on Positive or Negative Sampling.
Negative Parts Counting Sampling
Deriving an Average Piece Weight based on the net weight removed from a full container of parts on a platform, using a sample count provided by the operator. Allows parts counting with large containers of parts directly, without either having to empty the container or use an additional container. Still requires the tare weight of the container to be recorded in the scale.
Net Weight
The weight of an item being weighed, without the weight of a container, box, or other packaging. Used in legal for trade applications as the basis for sale.
No Load
Absence of an applied mass on the load-receiving element.

O


OIML (ORGANISATION INTERNATIONALE DE METROLOGIE LEGALE)
The International Organization of Legal Metrology (OIML) is an intergovernmental treaty organization whose membership includes Member States, countries which participate actively in technical activities, and Corresponding Members, countries which join the OIML as observers. It was established in 1955 (see the Convention) in order to promote the global harmonization of legal metrology procedures. Since that time, the OIML has developed a worldwide technical structure that provides its Members with metrological guidelines for the elaboration of national and regional requirements concerning the manufacture and use of measuring instruments for legal metrology applications.
Off-Center Load (Shift) Error
The difference between a load measured at the center of a platform and measurements half-distance from the center to the edge of the platform.
Overload
The load where the gross weight on the scale platform exceeds the capabilities of the scale. The safe overload capacity is the weight over which the scale will be damaged by the weight -- typically 150% of capacity for OHAUS products.
Over Range Limit
The gross weight on a scale where an error message is displayed warning of overload.

P


Pan
In a small-capacity scale of the counter type, a saucer-like load receiving element, usually circular, separable, and formed of a suitable metal.
Parts Counting
Counting groups of a part by recording a net weight of the parts and dividing it by an Average Piece Weight (Average Piece Weight) that has been statistically derived from a representative sample of the product being weighed. Accuracy in parts counting involves the accuracy of the scale, the accuracy of the Average Piece Weight, and the consistency of the parts being counted -- any specification given for OHAUS counting scales only refers to the accuracy of the scale in relation to the weight of the parts provided for the sample. May involve additional software functionality (Average Piece Weight enhancement, Auto-Add, etc.) or may involve counting items into a container or negative counting (removing a set amount from a full container). Common applications include packaging parts, inventory control, and restocking parts bins.
Percent Weighing
Displaying a sample weight as a percentage of the total reference weight recorded in memory.
Pipette Calibration
This function utilizes the extremely high accuracy of an OHAUS Discovery or Voyager Pro balance to calculate the amount of water expelled from a pipette - allowing the user to adjust the pipette's fluid delivery precision.
Platform
A horizontal and generally flat member or element of a scale, usually rectangular, occasionally square, designed to act as the load receiving element.
Positive Parts Counting
Counting parts on to a scale. Opposite of Negative Parts Counting
Positive Parts Counting Sampling
Deriving an Average Piece Weight based on the net weight on the platform divided by a sample count provided by the operator. The opposite of Negative Parts Counting Sampling.
Power On Unit
The weighing unit a scale will show when turned on. May be selected in software for some scales.
Precision
The degree of agreement between repeated measurements of the same quantity. The numerical value of precision is normally expressed as the result of the calculation of the standard deviation.
Print Output
The information a scale outputs using a communications port, as defined by certain conditions (on stability, based on a set period of time or continuously) and with certain contents which may be user-selected (weight result, gross weight, net weight, tare weight, programmed text header, user ID, project ID, scale ID, date/time, difference of a calibration test, weighing mode information, and other information).
Programmed (or Pre-set) Tare
A tare function using a tare weight entered with a keypad or recalled from memory.

R


Radio Frequency Interference (RFI)
Radio frequency interference is a type of electrical disturbance which, when introduced into electronic and electrical circuits, may cause deviations from the normally expected performance.
Readability
The smallest fraction of a division to which a scale can read. The smallest difference in mass that can be displayed on a scale -- commonly signified as "d" -- also called divisions or increments. Must be specified in conjunction with a tolerance for repeatability and linearity for true product comparison.
Repeatability (also Reproducibility)
How the scale will measure the same value over several measurements, expressed as a Standard Deviation (1 Sigma). The higher the value, the greater the variance in results, and the less accurate the scale.
Resolution
The total number of divisions based on capacity divided by readability. Expressed as a ratio 1:X,XXX, or in divisions X,XXXd or X,XXXe. Legal For Trade resolutions are based on known standards (NTEP, OIML, Measurement Canada, EC) and are tested by a third party.
Retail Price Computing
Computing a total price for an object based on a price/lb and net weight. Often a LFT application.
Retain Zero
The ability of a scale to retain the zero weight setting after a scale has been turned off.

S


Scale
A device for weighing or a series of graduations.
Scoop
A basin-like, detachable, load receiving element of a small capacity scale, frequently provided as an accessory to a counter scale.
Scoop Counterbalance
In a scale provided with a removable scoop, a permanently attached device intended to counterbalance the weight of the empty scoop.
Screw Knob Weight
A form of knob weight in which the machined knob is screwed into a tapped hole in the body of the weight. Screw Knob weights are generally ASTM designs.
Seal
The sign, symbol or object placed upon a weighing or measuring device to indicate that it has been inspected and tested by a governmental agency and found to be correct.
Set Point
A predetermined condition at which an event takes place in a control system.
Slotted Weight
A cylindrical weight with a radial slot to permit it to be applied on a counterpoise hanger.
Span Calibration
A calibration performed at 0 and 100% of capacity. A span calibration can correct the slope, but not the linearity error, of a scale.
Specific Gravity
Comparing the density of a mixture or solid against the same volume of water, expressed as either 1 (equal specific gravity to water), less than 1 (less dense than water) or greater than 1 (more dense). Often used to assess mixtures to ensure proper aeration.
Spring Scale
A scale in which the applied load is counterpoised, either directly or indirectly through a lever train -- by a counterforce induced axially in a helical spring -- whose extension is translated by suitable means into an indication of weight value.
SQC Weighing
Provides users with an automated method to track weighing results of multiple samples across several batches. Results can be printed or sent to a computer.
Stability
The degree of constancy of measurement of an instrument when subject to variation in external factors such as time, temperature and supply voltage.
Stabilization Time
The length of time a scale requires to display a stable weight value depending on the scale's environment, software filters, etc.
Stable Range
A weight tolerance, expressed as a number of divisions, within which a scale will display a stable weight.
Static Weighing
Weighing a non-moving object (as opposed to dynamic or animal weighing). Often-used in general weighing, shipping and receiving.
Static Weighing System
A weighing system in which the load being applied is stationary during the weighing operation.
Statistical Weighing
This mode captures statistical data from a series of weighings. This data can be displayed graphically, printed, or sent to a computer. Statistical weighing is ideal for the analysis, documentation and control of many like samples.
Strain gage
A metallic or semiconductor material that is bonded to a surface and elongates or contracts with that surface, with the resulting deformation causing a change in the gage's electrical resistance and allowing subsequent measurement of the deformation.

T


Tare Weight
Weight of the box or container used to weigh an item. Not used in legal for trade applications as the basis for sale.
Taring
Compensating for the tare weight of a container by setting the displayed weight to zero (net) before weighing the container and the container's contents.
Tare Range
The capacity range within which a scale can still display a net weight after taring a container.
Test Weight
A weight expressly designed and constructed for testing commercial scales and weights.
Totalization/Accumulation
Accumulation of data for a set of weighments, sometimes with statistics. May be set as automatic or as requiring an input from the operator. This mode is great in helping avoid manual documentation and calculation errors, as results can be printed or sent to a computer.
Transducer
A device for converting energy from one form to another for information or control purposes.
Triple Beam
A weigh-beam comprising three bars, usually in the same vertical plane.
Two Platform Counting
Parts counting where two different capacity and readability weighing platforms are used. A smaller capacity (but higher precision platform) is used to determine the Average Piece Weight, while a larger capacity (but lower precision) platform is used for bulk weighing of the parts to be counted. Within the limits of the counting scale, the resulting resolution is defined by the bulk capacity divided by the precision of the Average Piece Weight.

U


Underload
A scale is designed to display 0 with the weight of the platter and weighing frame on the load cell. Underload occurs when the weighing platter (and possibly frame) is removed, or when the weighing platform or frame is mechanically affected so that the load of the frame (and platform) is not on the load cell, affecting the accuracy of the weighment.
Under Range Limit
The point at which underload causes an error message to be displayed on a scale. Typically indicates if the pan is not on the scale, if shipping stops are still in place, if the overload stops in the platform are overtorqued or if there is material wedged in or under the weighing platform.

W


Warm-Up Time
The length of time a scale requires to reach thermal equilibrium, once it is provided power. Usually 30 minutes, assuming the scale is acclimated to environment.
Weigh Below
An attachment point on the bottom of the scale allows weighing below the balance, usually on a hook. Also called "weigh below balance" or "weigh below hook". Commonly used for hydrostatic (in water) density determination or weighing sample buckets.
Weighing Curve
The plot of the relationship between 0% and 100% of capacity for reference weights on a platform and the displayed weight reading on the scale.
Weighing (or Software) Mode
A software routine programmed into a scale which allows it to meet the needs of an end-user's application, with the results displayed in weighing units along with other information. Common modes include parts counting, checkweighing, percentage weighing, dynamic (or animal) weighing, display hold, and totalization/accumulation.
Weighing Unit
The unit that a weight, or mass for a calibrated scale, is displayed. May vary according to application, country and be based on legal requirements. The most common weighing units are Avoirdupois (lb, oz, tonnes, Grains, pennyweights, troy ounces, carats) and Metric (kg, g, mg, metric tonnes). For certain applications, a custom unit defined by the user may be required.
Weight
The force with which a mass is attracted toward the center of the earth by gravity. An object, usually of metal, having a definite mass, designed for weighing or testing purposes, as, a counterpoise weight, a test weight, etc.

Z


Zero
Setting the gross weight displayed on a scale to zero, with the zeroing range limited by software (LFT or approved modes) and new zero value affected by Auto-Zero Tracking (AZT).
Zero Checkweighing
Checkweighing against a recorded weight of a reference, with each sample's weight displayed as being under the reference weight or over the reference weight.
Zero Range
The percentage of total capacity within which a zero function may be performed on a scale, often expressed as 2% or 100%.

 

Courtesy of Ohaus.com