Page 129 - Parker - Vacuum products

Catalog 0802-E Vacuum Generators
Glossary

Pressure sensor Vacuum master valve
A piezo resistive sensor used to monitor pressure levels in This is a shuttle valve that works by differential forces which is
the system. The sensors supply NPN/PNP open collector piloted by a 2-3 valve. This valve can be configured normally
transistor outputs back to the PLC for confirmation. closed or open.

__R__
Response time
The time to evacuate the air out of a closed system to a certain
vacuum level. This is critical to the overall performance of the
B
vacuum system.
__T__
Threads
NPT (National Pipe Taper)
BSPT (British Standard Pipe Taper) Generator
BSPP (British Standard Pipe Parallel) Selection
G (Gaus)
M (Metric)
NPS (Dry Seal American Standard Fuel Internal Straight Pipe) MCA, CV, CV-CK

__V__ CHF
Vacuum
Any reference to vacuum or negative pressures could be
defined as a force applied to a closed system by the difference MC22
in the number of air molecules within a chamber, enclosure,
piping system, etc. to the number of air molecules outside
of these systems or enclosures. The outside atmospheric
pressure is larger and applies a force to the lesser pressures in MC72
the systems or enclosures. Therefore, vacuum is a differential
pressure whereby atmosphere is the reference and external
force. CEK

Vacuum confirmation
Term used to describe an output signal NPN/PNP from the CVXCEK
sensor to the PLC when the suction cup has made a proper
seal with the product before transfer. This verifies that the
vacuum level is safe to proceed. MPS-23

Vacuum flow
Represented as SCFM, this is the rate at which air molecules MVS-201
can be evacuated through a venturi system.

Vacuum generator Generator
This is sometimes referred to as an ejector. The venturi Accessories
generates vacuum with compressed air by evacuating air
molecules from a closed system.
Glossary
Vacuum release pilot valve
Also referred to as Discharge valve, this valve pilots the Blow-
off release master valve to effectively release the product during
pick and place applications. This function is essential to high
speed applications.

B59 Parker Hannifin Corporation
Pneumatic Division
Richland, Michigan
www.parker.com/pneumatics