Glossary - L

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LCD

A liquid crystal display (commonly abbreviated LCD) is a thin, flat display device made up of any number of colour or monochrome pixels arrayed in front of a light source or reflector. It is prized by engineers because it uses very small amounts of electric power, and is therefore suitable for use in battery-powered electronic devices.

LED

A light-emitting diode (LED) is a semiconductor device that emits incoherent narrow-spectrum light when electrically biased in the forward.

Linearity

The closeness of a calibration curve to a specified straight line. Linearity is expressed as the maximum deviation of any deviation point on a specified straight line during any one calibration.

Load

The electrical demand of a process expressed as power (watts), current (amps) or resistance(ohms).

Load Cell

A load cell is typically an electronic device (transducer) that is used to convert a force into an electrical signal. This conversion is indirect and happens in two stages. Through a mechanical arrangement, the force to be sensed is used in deforming a strain gauge. The strain gauge converts the deformation (strain) to electrical signals. The load cell is one of a series of Strain Gauge sensors that the SGA input is designed to accept. (Torque Sensor, Pressure & temperature transducers).
http://www.mantracourt.co.uk/products/Amplifiers_Digitisers/SGA

Load Impedance

The impedance presented to the output terminals of a transducer by the associated external circuitry.

Low Pass Filter

A low-pass filter is a filter that passes low frequency signals but attenuates (reduces the amplitude of) signals with frequencies higher than the cutoff frequency. The actual amount of attenuation for each frequency varies from filter to filter. The SGA Module has a low pass filter to remove unwanted signals on the output.

LVDT

The linear variable differential transformer (LVDT) is a type of electrical transformer used for measuring linear displacement.
http://www.mantracourt.co.uk/products/Amplifiers_Digitisers/LVDT

Load Cell Indicators

The load cell is for example, one of a series of Strain Gauge sensors that the SGA input is designed to accept. (Torque Sensor, Pressure & temperature transducers).

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