Table of Contents
Advertisement
Glossary of Terms (Cont'd)
OSHA (Occupational Safety and Health Administration): a division of the U.S. Department of Labor,
responsible for the regulation of workplace safety. OSHA regulations often follow ANSI standards which
become law when adopted by OSHA and must be followed.
PLC (PROGRAMMABLE LOGIC CONTROLLER): an electronic device used to decipher electrical
signals from input devices and energizes output devices. A PLC also gives you the ability to manipulate
how and when the output devices are energized by the information being sent by the input devices.
PNEUMATIC: a devise which is being controlled by the use of compressed air.
POSITIVE DISPLACEMENT: a process of where a known precise volume of material is displaced
(dispensed) during a given motion of the dispense valve.
POWER HEAD ASSEMBLY: the top section of the dispense valve which controls the length of stroke
and the volume of material being dispensed.
PRIMARY AIR SOURCE: the main supply of air pressure which is being used to operate the dispense
valve.
PSI: pounds of pressure per square inch.
QUALIFIED PERSONNEL: a person who by possession of a recognized degree or certificate of
professional training, or who, by extensive knowledge, training, and experience, has successfully
demonstrated the ability to solve problems related to the subject matter and work (ANSI B30.2-1983).
RESIDUAL PRESSURE: pressure that is still in the material or airlines that has not been reduced even
though the primary source of the pressure has been turned off.
RHMS: round head machine screw
ROBOTIC MOTION SYSTEM: a complex device which uses robotic arms to precisely move the
dispense valve or other components about the dispense valve.
SEAL PLATE CUP: a block on each side of the body, used to lubricate the sides of the spool.
SHCS: socket head cap screw.
SOLENOID VALVE: an electrical devise used for turning the flow of air on and off.
SHCS: socket head cap screw.
U-CUP: a pneumatic seal used in low pressure-low speed situations.
VISCOSITY: a numerical measure of the degree to which a fluid resists flow under an applied force.
Wet Cup: Place to put compatible lubricant fluid to keep air from being drawn into the material chamber,
and to lubricate seals.
WET HEAD ASSEMBLY: the lower section of the dispense valve which is where the material flow
takers place.
Z-AXIS: a pneumatic slide which moves the dispense valve down onto a part for dispensing, and back up
into a neutral position.
20
Advertisement
Table of Contents
