Scanivalve MPS4264, Руководство по аппаратному и программному обеспечению, Страница: 33 / 99

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MPS4264
Section 4: Hardware
SECTION 4: HARDWARE
Pneumatic Connections
The MPS modules has several different pneumatic connec-
tions. All pneumatic inputs are located on the top of
the module. There are two basic groups of pneumatic
connections types on the module: pressure measurement
connection and configuration/support connections. All
pneumatic inputs are through one of three removable
headers for easy plumbing and system re-configuration.
The measurement ports are located on the on the outer
edge of the modules and are identified as 1-32 on one
pneumatic header and 33-64 on the opposite pneumatic
header. These 64 input ports are directly connected to one
of the individual pressure transducers within the module.
One the same pneumatic headers as the measurement
input ports are the purge input ports. Each purge input
port is used as the purge supply feed for purging the input
lines on the respective side of the module.
The remaining configuration/support type pressure inputs
are all located on the center removable header. They are:
CAL CTL, REF, CAL and Px CTL. These ports are used for
applying known pressures during calibration, cycling the
internal valve between states and connecting the reference
manifold to a known, stable ambient pressure.
The 64 measurement input ports (or Px ports) are available
with 0.042” or 0.031” OD tubes. The remaining tubes for
the PRG, CAL, REF and CTL inputs will always be 0.063” OD.
Figure 4-1: Pneumatic inputs, CPx variant
Figure 4-2: Pneumatic inputs, NPx variant
Basics of Connecting Input Tubes
All pneumatic connections are 0.063”, 0.042” or 0.031”
OD stainless steel bulged tubulations. These tubes are
designed to have a tight-fitting plastic tube slid over the OD
of the tube. For all low pressure connections (50psi and
less) the plastic tubing can simply be slid over the tubula-
tion and the connection is complete. For higher pressure
applications, when using Urethane or Vinyl tubing, a helical
spring clamp over the OD of the plastic tubing is recom-
mended. The clamp is slid over the tubing and located
around the apex of the bulged of the tubulation. This helps
hold the plastic tubing in place and prevent leaks.
Installing the plastic tubing over the stainless steel tubing
can be done much easier by using Scanivalve’s special
“Tubing push-on tool” P/N: TPOTL-XXX. This tool is offered
in a variety of sizes to work for tubing from 0.031” to
0.125” OD.
Figure 4-3: Tubulation connection with
helical spring clamp