urement of liquid or gaseous pres sures from 0 to 10,000 p.s.i. Dept. IEC, Automatic Timing & Controls, Inc., King of Prussia, Pa. 42 Multipoint Recorder A new multipoint recording po tentiometer, capable of handling from 2 to 24 points by a simple plug-in adapter, has been designed. Model 6702 Daystrom-Weston in strument is designed to measure any number of variables under this' arrangement. Dept. IEC, Weston Instruments, Division of Daystroni, Inc., Newark 12, N. J. 43 Temperature Transmitter Sensaire temperature transmitter has a range of —30° to + 1 2 0 0 ° F . I t has few moving parts and is
CAST IRON SUR
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Instrument has wide temperature range
not affected by barometric changes. Screw adjustment over a wide range sets zero position. Dept. IEC, Taylor Instrument Cos., 95 Ames St., Rochester .1, Ν. Υ. 44 Multi-Range Temperature Recorder Small strip-chart recorder has a variety of ranges which can be eas ily changed by plug-in elements. Automatic reference junction com pensation eliminates need for exter nal temperature reference. Dept. IEC, Instrument Division, Varian Associates, 611 Hansen Way, Palo Alto, Calif. 45 JMÉBLore information is as near as your m a i l b o x ! Just circle the number o f the item in which y o u a r e interested on the Readers' Information C a r d , preceding this section.
National-U.S. Cast Iron Sections are the most widely used heat transfer units for sulfuric acid cooling in sludge recovery and contact plants— and have been, for many years. More and more, process engineers are looking into the possibility of using these units for other acids and corrosives in the chemical and petrochemical industries. National-U.S. engineers can contribute valuable help from this background of experience in these fields. Call on them when you have a problem of heating or cooling corrosive materials in your operation. Write for details, or see new edition of Chemical Engi neering Catalog for name of nearest representative. 58-03
Heat Transfer
Division
National-U.S. Radiator C O R P O R A T I O N 342 Madison Avenue · New York
17, New York
Circle No. 71 on Readers' Service Card VOL. 5 1 , NO. 2
•
FEBRUARY 1959
103 A
