Industrial Terminology Glossary – O
The process of replacing outdated or obsolete equipment or components. Read More…
A technological system engineered to determine the presence and number of individuals inside a vehicle. Read More…
Office of Weights and Measures (OWM)
Office at NIST that ensures consistency in any laws, regulations or standards regarding weights and measurements
A small electric current that flows into or out of the input terminals of an electronic meter. The meter’s readings may experience inaccuracies due to the significance of its offset current. Read More…
A minor voltage that exists at the output of an amplifier even when there is no input voltage applied. Read More…
Ohm
The SI unit of electrical resistance, equal to the amount of resistance in a circuit energized with one volt of potential difference and transmitting a current of one ampere.
An electrical measurement device designed for the precise assessment of electrical resistance within various materials. Read More…
Ohm’s Law
An equation that describes how current, resistance and voltage are related. I=E/R where R is resistance, I is current and E is voltage
An optical comparator, often referred to as a profile projector, is an instrument used in the inspection and measurement of manufactured components. It operates by leveraging optical techniques to project an enlarged and precise silhouette of the examined part onto a viewing screen. Read More…
A precisely polished glass or quartz piece with a flat surface, used as a reference to gauge the flatness of other surfaces like optical lenses or mirrors. Read More…
Opto-Isolator
Also known as optical coupler, optocoupler and opto-isolator, a semiconductor device that uses a short optical transmission path to transfer an electrical signal between circuits or elements of a circuit, while keeping them electrically isolated from each other.
Original Equipment Manufacturer (OEM)
A company specializing in the production of equipment or components designed for incorporation into the products of other businesses. Read More…
A valuable tool for monitoring and analyzing electrical signals in real-time. Read More…
Output
The signal produced by a device when an input is applied. Often, transducers and load cells output a voltage or current which can be measured by a meter and scaled with the circuitry in the indicator to provide a reading in the desired unit of measure.
Over Range
Exceeds the full scale reading but does not exceed maximum safe overload capacity.
Overload
The load beyond full-scale value that an instrument can withstand without damage or failure. Usually expressed as a percent of a full-scale value.
Overload Rating (Safe)
The maximum weight that can be put on a scale before it permanently alters performance of the scale.
Overload Rating (Ultimate)
The maximum weight that can be put on a scale before it is damaged structurally.
A phenomenon where a system’s response to a sudden input change exceeds the intended output level. Read More…
