|
| Saturated steam |
| |
Steam at boiling temperature for a given pressure.
|
|
| Scanner |
| |
Generally an optical or laser/camera measuring device. Scanners are composed of a transmitter head and a receiver head, which permit electronics system to obtain the shape and the dimensions an object.
|
|
| Sequence |
| |
The order of a series of operations or movements.
|
|
| Sequencing valve |
| |
A pressure operated valve which, at its setting, diverts flow to a secondary line while holding a predetermined minimum pressure in the primary line.
|
|
| Servo mechanism (servo) |
| |
A mechanism subjected to the action of a controlling device which will operate as if it were directly actuated by the controlling device, but capable of supplying power output many times that of the controlling device, this power being derived from an external and independent source.
|
|
| Servo valve |
| |
Electro-mechanical device used to control a setworks hydraulic cylinder. An electrical signal is sent to the servo valve which opens, allowing hydraulic fluid to flow into the cylinder. The voltage level and direction of the electrical signal determine the speed and direction of the setworks movement.
|
|
| Set complete |
| |
The actual position of a setworks is within a certain distance of the command position to which it was sent.
|
|
| Set complete range |
| |
The maximum distance allowed between the actual position of a setworks and the position to which the setworks was sent. When the setworks position is in this range, the setworks is at set complete.
|
|
| SG |
| |
Specific gravity. Also called relative density. As applied to wood, the ratio of the oven-dry weight of a sample to the weight of a volume of water equal to the volume of the sample at a specified moisture content (green, air-dry, or oven-dry).
|
|
| Shaft horsepower |
| |
A measure of the actual mechanical energy per unit time delivered to a turning shaft.
|
|
| Sheave |
| |
The grooved wheel of a pulley.
|
|
| Sheaves |
| |
Pulleys mounted on the end of the drive and motor shaft over which belts pass to transfer rotational force from the motor to the shaft.
|
|
| Shim |
| |
A thin piece or strip of metal used to fill in, as in leveling.
|
|
| Short rotation intensive culture (SRIC) |
| |
The growing of tree crops for bioenergy or fiber, characterized by detailed site preparation, usually less than 10 years between harvests, usually fast-growing hybrid trees and intensive management.
|
|
| Short ton |
| |
2,000 pounds or 0.9072 tonnes.
|
|
| Signal |
| |
A control impulse from a control device or sensor.
|
|
| Snatch block |
| |
A block that can be opened on one side to allow a cable or rope to be laid in the block, instead of threading it through from one end.
|
|
| Specific gravity |
| |
Also called relative density. As applied to wood, the ratio of the oven-dry weight of a sample to the weight of a volume of water equal to the volume of the sample at a specified moisture content (green, air-dry, or oven-dry).
|
|
| Spool |
| |
A term loosely applied to almost any moving cylindrically shaped part of a hydraulic component which moves to direct flow through the component.
|
|
| Stack heat loss |
| |
Loss of combustion heat via gas emissions in the smokestack of chimney.
|
|
| Steam |
| |
Vapor produced by heating water.
|
|
| Steam sprays |
| |
Mechanical equipment for introducing water vapor or steam to the kiln environment.
|
|
| Steam turbine |
| |
A device for converting energy of high-pressure steam (produced in a boiler) into mechanical power which can then be used to generate electricity.
|
|
| Strainer |
| |
A coarse filter.
|
|
| Streamline flow |
| |
A condition where the fluid particles move in continuous parallel paths.
|
|
| Stroke |
| |
1. The length of travel of a piston or plunger.
2. To change the displacement of a variable displacement pump or motor.
|
|
| Sub-plate |
| |
An auxiliary mounting for a hydraulic component providing a means of connecting piping to the component.
|
|
| Suction line |
| |
The hydraulic line connecting the pump inlet port to the reservoir or sump.
|
|
| Sump |
| |
A reservoir.
|
|
| Supercharge |
| |
1. To replenish a hydraulic system above atmospheric pressure.
2. To fill an accumulator with fluid under pressure (See Precharge pressure).
|
|
| Superheated steam |
| |
Steam which is hotter than boiling temperature for a given pressure.
|
|
| Surge |
| |
A transient rise of pressure or flow.
|
|
| Surplus electricity |
| |
Electricity produced by cogeneration equipment in excess of the needs of an associated factory or business.
|
|
| Swash plate |
| |
A stationary canted plate in an axial type piston pump which causes the pistons to reciprocate as the cylinder barrel rotates.
|
|
| Synchro |
| |
A rotary electromagnetic device generally used as an AC feedback signal generator which indicates position. It can also be used as a reference signal generator.
|
