Labeling Dictionary

Labeling systems dictionary

Labeling Dictionary L

Label head
A pressure sensitive label head consists of a label roll unwind, a web drive mechanism, a label peel plate and a web rewind.
Label placement
Measurement of label vertical plane position.
Label skew
Measurement of label horizontal plane deviation from a straight line.
Ladder logic
Symbolic representation illustrates schematically the functions of a control circuit. The power lines form the sides of a ladder-like structure, with the program elements arranged to form the rungs.
Lag
1) A time delay between the output of a signal and the response of the instrument to which the signal is sent. 2) A time relationship between two waveforms where a fixed reference point on one wave occurs after the same point of the reference wave.
Laser marking
The practice of using lasers to engrave or mark an object. The technique does not involve the use of inks, nor does it involve tool bits which contact the engraving surface and wear out.
Laser marking (ablation)
Laser ablation is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam.
Laser marking (Datalase)
See Datalase.
Lead time
Time, normally in weeks or days, after the receipt of an order, at the end of which a custom automation machine builder will deliver to the buyer.
Legacy Systems
Computer systems or application programs which are outdated and incompatible with other systems, but are too costly to replace or redesign. They are often large, intimidating, and difficult to modify.
Life cycle
The minimum number of pressure cycles the transducer can endure and still remain within a specified tolerance.
Light-Emitting Diodes (LED)
Light-Emitting Diodes are solid-state devices that radiate in the visible region. They are used in alphanumeric displays and as indicator or wiring lights.
Limit switch
A mechanical device which, when activated, opens or closes contacts to alter the control circuit.
Limiting operation
The bottleneck or constraining resource in a linked series of resources. The production rate of the set of resources is effectively the production rate of the limiting operation.
Local Area Network (LAN)
A network that takes advantage of the proximity of computers to offer relatively efficient, higher-speed communications than long-haul or wide-area networks.. A network that takes advantage of the proximity of computers to offer relatively efficient, higher-speed communications than long-haul or wide-area networks.
Linear
Said of any device or motion where the effect is exactly proportional to the cause.
Linear load
A predictable nonprocess energy load that has a profile that changes with time and condition.
Linearity
The maximum deviation of the calibration curve from a straight line between zero and full scale, expressed as a percent of full scale output and measured on increasing measured only.
Lineshaft conveyor
A roller conveyor with carrying rollers individually powered by drive belts from a rotating shaft.
Live roller conveyor
A series of rollers over which objects are moved by the application of power to all or some of the rollers. The power transmitting medium is usually belting or chain.
Load
The total weight on the conveyor.
Load cell
A device which produces an output signal proportional to the applied load.
Lock-Out/Tag-Out (LOTO)
Refers to specific practices and procedures to safeguard employees from the unexpected energization or startup of machinery and equipment, or the release of hazardous energy during service or maintenance activities.

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