Page 294 - Praxair - Specialty Gases and Equipment Reference Guide

Gas Delivery Systems

Fully Automatic Changeover Manifolds

™
ProSpec Auto 2 ProSpec Auto M5
Based on the PRS5026 switchover design, the ProSpec Auto 2 The Auto M5 is based on manual 5 valve process panels, with
is a fully automatic changeover system using the new PLC con- inert purging capabilities. By incorporating the PLC controller,
troller SPASW100. The SPASW100 is a touch screen controller SP8100, we can automate, and control switchover from side to
that uses an analog input signal to control the switching of gas side. The SP8100 is a touch screen controller that uses an analog
from one side to the other. The analog signal can be from a input signal to control the switching of gas from one side to
pressure transducer installed on the inlet side of the primary the other. The analog signal can be from a pressure transducer
regulators, or from individual scale platforms monitoring weight installed on the inlet side of the primary regulators, or from individ-
of a liquefied gas cylinder. Simple Contact Style gauges can also ual scale platforms monitoring weight of a liquefied gas cylinder.
be used. The controller also has an emergency shutdown feature The controller also has an emergency shutdown feature and Section E – Gas Handling Equipment
and an additional fault input. The SPASW100 uses a pneumatic monitors 2 general and 6 safety faults. The SP8100 uses a
signal to control the switching between two pneumatically pneumatic signal to controls the shutdown and auto switchover
actuated high pressure valves. via 2 or 4 pneumatically actuated high pressure valves.

Features and Benefits Features and Benefits
n PLC Controller* With 3.5" n Additional Fault Input Capability n PLC Controller* With 3.5" n Additional Fault Monitoring
Touch Screen Interface n 1X1 Design for pressures up to Touch Screen Interface Capability, continued
n Fully Automatic Changeover 3000 psig n Fully Automatic Changeover n Excess Flow (Flow Switch) –
Capability n Outlet pressure range up to Capability Critical Fault & Shutdown
n Flame Detector – Critical Fault
n Can Auto Switchover on 400 psig n Can Auto Switchover on & Shutdown
Pressure and Weight * Controller will require a regulated Pressure and Weight n Exhaust Failure (Stack or
n Emergency Stop Button Integral air source @85 psig n Controls One or Two Panels Exhaust Switch) Critical Fault
to Controller n Emergency Stop Button Integral n Remote Shutdown (Remote
to Controller Stop) Critical Fault &
i n Additional Fault Monitoring Shutdown
Capability n 1X1 Design for pressures up to
Other configurations and custom assemblies are available. 3000 psig
n Displays analog reading of
Contact a Praxair representative for further details. scale or transducer n Outlet pressure range up to
n Low Cylinder Alarm 500 psig
n Low Purge Source Pressure * Controller will require a regulated
n High Outlet Pressure – Critical air source @85 psig
Fault & Shutdown
n Toxic Monitor (Gas Detector)
– Critical Fault & Shutdown
i
Other configurations and custom assemblies are available.
Contact a Praxair representative for further details.

1-877-PRAXAIR www.praxairdirect.com E•293