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HIGH TEMPERATURE COMBUSTION

FURNACE • A new furnace for general use in micro

and semimicro combustions at temperatures up to 1150°C (2100°F)

• Dual thermocouples for determination of both element and tube temperatures

• Long-life heating element of new design, and Pyroceram end plates

For milligram and centigram procedures. Designed tor switch for the two thermocouples, mounted specifically to provide a temperature of 1150°C pyrometer, pilot light and adjustment knob for the (2100°F) as required for the direct determination built-in variable input transformer, of oxygen by the Unterzaucher procedure, but Housing· is of sheet metal finished in two tone suitable for all microchemical combustion tech- * T r t h v e n t i l a t e d t o n o f anodized aluminum niques requiring elevated temperatures. Accom- ^ t w o \ i r c u l a r e î d pVtes a?e of l o n g S n g modates combustion tubes up to 18 mm outside p y r o C e r a m and are held in position by two alumi-

meter. num rings. Overall dimensions of the Furnace, 1334 A built-in Platinum-Platinum 1 3 % Rhodium X 1234 X 8Vs inches; height to combustion tube

thermocouple is supplied with the Furnace. An 9 inches. external removable thermocouple of identical char- Use of the 1 KW constant voltage transformer is acteristics is offered for direct determination of recommended to protect the heating element and to temperatures existing within the combustion tube. provide a temperature at center of heating chamber A switch permits reading of temperatures of either constant within 5°C irrespective of line fluctuations in thermocouple on the pyrometer. t h e , r ^ n § e 9.° t o , 1 3 0 ,Yolts- Without transformer, a change

^J ot 5% m input voltage results in changes up to lo C The replaceable heating element is of new design, a t H50°C.

prov id ing a h e a t i n g c h a m b e r a p p r o x i m a t e l y 280 5675-B. Furnace, High Temperature Combustion, Thomas, mm long X 19 mm inside diameter, with a groove as above described, with built-in Platinum-Platinum 13% Rhodium On b o t t o m to a c c o m m o d a t e t h e in t e rna l t h e r m o - Thermocouple for determining temperature at the element, but COUple. Special K a n t h a l res i s tance wire is WOUnd without External Thermocouple or Constant Voltage Transformer. in coils, arranged to provide a zone approximately P o w e r consumption 650 watts. For use on 115 volts, 50 or 60 100 mm long with uniform temperature when cycles, a.c 425.00 ope ra t i ng a t 1150°C. A l t h o u g h t h e cons t ruc t ion 5675-C. Ditto, but with 1 KW Constant Voltage Transformer. insures a long element life, it can be conveniently For 9 5 " ' 3 0 volts- 6 0 cvcle*· a-c· on,y 596.00 rep laced in t h e e v e n t of a b u r n o u t . 5675-D. Ditto, but with 1 KW Constant Voltage Transformer and

External Thermocouple for determining temperatures within the Control panel contains on-off power switch, selec- tube. For 95-130 volts, 60 cycles, a.c only 636.00

More detailed information sent upon request

A.H.T.CO. ARTHUR H. THOMAS COMPANY tas f

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