Page 291 - Praxair - Specialty Gases and Equipment Reference Guide
P. 291

Gas Delivery Systems

            Dewar Changeover System




                   ™
            ProSpec  Series 9500 Automatic
            Dewar Changeover System
            The Series 9500 Automatic Dewar Changeover System is a fully   The Series 9500 system includes 6' stainless steel armor-jacketed
            automatic system designed to provide an uninterrupted flow of   flexible pigtails, with CGA check valves, cylinder isolation valves.
            gas from two sources. When one source is in service providing   This configuration gives the operator the capability to isolate a
            the gas to process; the other source is on standby, and comes   source from the changeover panel, allowing replacement of the
            on-line when the current source has depleted. The changeover   source without having to shut down the system.
            to the standby source occurs automatically. The Series 9500    Applications – GC and LCMS, process and analytical equipment
            system employs a unique Economizer Circuit, to prevent venting   that requires 24/7/365 operation.
            of the reserve source.
























              Features and Benefits                              Specifications           Materials
            n  Fully automatic operation  n  Seperate control and    n  Maximum Inlet Pressure  n  Bodies
              No levers or knobs to change    alarm box         500 psig                  Brass Barstock
                                       Allows for flexibility during
            n  Six fully programmable                           Delivery pressure range     n  Diaphragms
              switchover pressures     installations            20-225 psig               316L
              Reduces product waste  n  Wall Mounted           n  Temperature Range     n  Seats/Seals
                                       Easy installation
            n  Automatic Changeover                             -20 °F to 148 °F          PTFE
              Continuous gas supply
     Section E – Gas Handling Equipment
              Ordering Information – Series PRS9500              Option                       Part Number
            Series    Model    A            B           C     100' Cable Extension            PRSP4302112
            Number         (Number of Dewars)    (Standard)    (CGA)  25' Cable Extension     PRSP4302113
            PRS     9500    1: 1 x 1        1: Audio/Visual   580  100' Alarm Cable Extension    PRSP4302114
                           2: 2 x 2                     320   25' Alarm Cable Extension       PRSP4302115
                           3: 3 x 3                     540   Audio/Visual Alarm Cable Extension    PRSP4302104

            Example Part Number
            PRS9500-11580 = Basic changeover for two dewars,
            (1 primary, 1 reserve) alarm and CGA 580

             Serial
            Number        A   C
               s
                           s
                               s
            PRS9500-11580
                    s      s
                   Model   B





           E•290                              1-877-PRAXAIR                     www.praxairdirect.com
   286   287   288   289   290   291   292   293   294   295   296