Glossary of Terms

Glossary of Terms for the Scale Industry

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E

e (Verification Scale Division)
Value of a verification scale division specified by the manufacturer; sets value for tolerances and accuracy class.

e-min (Minimum Verification Scale Divisions)
The minimum scale division or value for which a device complies with applicable requirements (e.g. bench or counting scale)

Eccentric Load
Any load applied parallel to but not concentric with the primary axis.

EEPROM
Electrically-erasable PROM. Type of PROM that can be erased and re-programmed by electrical signals. As with all PROMs, it is non-volatile random-access memory.

EIA
Electronics Industries Association. American agency that sets electrical/electronic standards.

Electrical Interference
Electrical noise induced upon the signal wires that obscures the wanted information signal.

Electrical Noise
The presence of unwanted electrical signals. These can obscure or confuse the signal that carries useful information, such as the sensor output signal or the error signal.

End Points
The end points of a full scale calibration curve.

EPROM
Erasable Programmable Read-only Memory. PROM that can be erased, usually with ultraviolet light, then re-programmed with electrical signals. As with all PROMs, it is non-volatile random-access memory.

Error
Error is the difference between a measured value and the actual value. For example, a ruler is used to measure the width of a page of a book, and it is found to be, say, 11 ½ inches. However, the actual size of the page measured was 11 ¼ inches, therefore there was an error in measuring the size of the book of 11 ½ inches - 11 ¼ inches = ¼ inch. Error may often be quoted as a percentage to represent the accuracy of a system.

Explosion Proof
Term used to refer to equipment intended for use in dusty or explosive environments which is designed to contain and prevent escape of hot gases or flames.

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