Southwest Retort, Volume 6, Number 6, March 1954 Page: 4
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New Heating System
Sargent Constant Temperature Bath
The 0.010 C. Sargent Constant Temperature Water Bath, which is
employed in many laboratories throughout the world where a precise,
reliable thermostat is required, is now being supplied with an improved
relay unit and heating system. The central heating and circulating unit
of the bath is now equipped with three cylindrical heating elements
rated at 200, 300 and 400 watts respectively. The 200 watt heater is con-
trolled by the No. 81835 mercurial thermoregulator through a thyratron
tube and saturable core reactor in the relay unit. (The use of a saturable
core reactor obviates the difficulties commonly encountered with
mechanical relaying systems such as pitted contacts, broken moving
parts and freezing.) By means of a control mounted on the panel of the
relay the output of this heater can be varied from the full 200 watts to
approximately 60 watts, thus permitting such adjustment of the heater
output that positive overshooting of the regulatory temperature is min-
imized. With the improved relay system this bath can be adjusted to
a precision of .005 C. when operating in the vicinity of 25 C.
In addition, the relay unit is equipped with a master switch, a switch
for each heater and a pilot light to indicate that the circuit to the 200
watt heater is closed.
Maximum power consumption 1100 watts.
S-84805 WATER BATH - Constant Temperature, 0.01 C., Sargent.
Complete with Pyrex jar, 16 inches in diameter and 10 inches in height;
central heating and circulating unit; constant level device; cooling coil;
No. 81835 thermoregulator and relay unit with cord and plug for con-
nection to standard outlets. For operation from 115 volt 50/60 cycle
circu its .......................................... $275.00
SCIENTIFIC LABORATORY INSTRUMENTS * APPARATUS * SUPPLIES * CHEMICALS
E. H. SARGENT & COMPANY, 4647 W. FOSTER AVE., CHICAGO 30, ILLINOIS
MICHIGAN DIVISION, 1959 EAST JEFFERSON STREET, DETROIT 7, MICHIGAN
SOUTHWESTERN DIVISION, 5915 PEELER STREET, DALLAS 9, TEXAS
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American Chemical Society. Dallas/Fort Worth Section. Southwest Retort, Volume 6, Number 6, March 1954, periodical, March 1954; [Dallas, Texas]. (digital.library.unt.edu/ark:/67531/metadc86800/m1/4/: accessed January 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .