safety boots Boots that are worn by the user to give protection to the feet in the normal course of work, or in case of accident
safety relay An electrical relay that is used for cutting the power to a sensitive piece of equipment when dangerous conditions are suggested by the signals returned by certain sensors
safety shoes Shoes that are worn by the user to give protection to the feet in the normal course of work, or in case of accident
safety switch An electrical or electronic switch that is used for avoiding dangerous situations, or for applying quickly in case of need of remedial action
scaffolding A temporary erection of metal or timber up the face of an edifice that is being constructed or maintained, with platforms and ladders for the personnel that is undertaking the work
SCARA robot A selective compliant articulated (or assembly) robot arm (SCARA) is generally a four-axis arm, with a shoulder joint for x-axis, an elbow joint for y-axis, a third joint for z-axis, and a wrist joint for theta-z (rotation around the z-axis) control
scissor lift table A platform lift that works like sugar-tongs, so that pushing the supports together horizontally causes the platform to be raised vertically
screw compressor A machine for increasing the pressure of a gas at the end of a constantly rotating helical groove within a cylinder
screw jack A device for prizing two solids apart, or often for lifting heavy vehicles just off the ground, using the high force (low velocity) obtained at the output of a worm gear
scrubber dryer A system for cleaning vehicles using rotating brushes, and sprays of water and air
servo drive An electric motor for making a mechanical change in a servo system (a system with a feedback loop measuring, and controlling, the difference between the present setting and the desired setting)
servo-controller The controller for a servo system (a system with a feedback loop measuring, and controlling, the difference between the present setting and the desired setting of a number of physical or mechanical parameters)
servo-motor An electric motor for making a mechanical change in a servo system (a system with a feedback loop measuring, and controlling, the difference between the present setting and the desired setting)
shot blasting machine A machine for dispensing abrasive material (the shot) at high speed from a nozzle, for mechanically blasting the outer surface layer of the target object or building
signal conditioner An electronic module that takes the input signal, and outputs the equivalent in a form that is suitable for the next stage of electronics processing (by first dealing with any excessive voltages, frequency components, etc)
signal converter An electronic module that takes the input signal, and converts it to an output that is equivalent but in a different form or domain
simulation software Computer software that allows a computer model of an engineering design to be simulated, in computer memory
single board computer A complete computer system, including processor, local memory and interfacing to the external peripherals, implemented on a single circuit board
skid steer loader A rigid frame, engine-powered four-wheel drive tractor with lift arms for attaching a wide variety of labor-saving tools or attachments. The lift arms run the length of the tractor with the major pivot behind the driver
sleeve wrapping machine A machine for applying shrink-wrap film to an object, and applying a stream of hot air to cause the film to shrink tightly round the object
slip ring A metal ring, on the axle of a rotor, for allowing a fixed electrical connection to be made to the part of the circuit on the rotor (via brushes rubbing against the ring, for example)
soldering machine A machine for performing the soldering operation automatically, or semi-automatically (usually with an automatic feed and delivery of those pieces into and out of the machine)
solenoid An electromagnet (whose magnetic field is created by an electric current flowing through a coil of insulated wire), perhaps with a ferrous bar that is free to move along the axis of the coil, under the influence of the magnetic field, for operating other
solenoid valve A valve, to control the flow of fluid in a pipe, that is opened and closed electrically, using an electromagnet to change the state of the valve
solid state relay An integrated circuit that uses transistors to provide the switching function, instead of electromagnetic relays
sound level meter Apparatus for measuring the amount of sound energy being picked up by an acoustic sensor, or being given out by an acoustic transducer
spectrometer Apparatus for measuring the energy distribution of the components of a particular type of radiation
spectrophotometer A photometer for comparing two sources of light radiation, plotted out by wavelength
spectrum analyzer Apparatus for analyzing the frequency components of a signal input
speed sensor A sensor for measuring or monitoring the speed with respect to the environment
spherical bearing A universal joint, able to bend in two dimensions, composed of two concentric rings, each one able to swivel orthogonally to the other
spray gun A spray nozzle that is supported by a handle, and that has a trigger mechanism for controlling the flow of liquid in from a pipe and out via the spray nozzle to the target object or surface
spray nozzle A shaped outlet for a pipe, for turning the flow of the fluid into a wide spray as it leaves the pipe
Alphabetical list of product definitions
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