2
GENERAL INFORMATION
The incubator is commonly referred to as the
standard Model 815. These instructions
encompass the models listed below with their
specific electrical characteristics.
PERFORMANCE DATA
Heat-Up Time: From -10°C to 50°C; 120 minutes
(Compressor "ON");
Cool-Down Time: From 50° to -10°C; 100 minutes.
NOTE
THE ABOVE PERFORMANCE FIGURES ARE BASED
UPON THE FOLLOWING OPERATING CONDITIONS:
LINE VOLTAGE ............... 110.5 TO 112.5
AMBIENT TEMPERATURE ... 22.5° TO 24°C
Theory of Operation
The refrigeration system, defrost heater, and air
circulating fan are used in conjunction with a
microprocessor controlled proportioning circuit to
achieve sensitive temperature control. A RTD
(Resistance Temperature Detector) located in the
airstream senses any temperature deviation from
the control point, and heat is provided
proportionally to maintain the desired temperature.
Regardless of what temperature is being
maintained, the compressor operates
continuously. This constant operation alleviates
component failures associated with cycle type
operation.
The circulating fan provides even air distribution
throughout the chamber and assures temperature
uniformity.
CATALOG NO. 51220105 CAN BE CONVERTED FOR
OPERATION ON 200V OR 240V BY CHANGING
INPUT CONNECTIONS TO THE
AUTOTRANSFORMERS (SEE WIRING DIAGRAM ON
PAGE 17).
The 815 Low Temperature Incubator has been
designed to provide the ultimate in temperature
control. The user is assured of dependable and
precise performance through the use of
microprocessor technology in the temperature
control circuitry. The Model 815 Incubator is
operable in the range of -10° to 50°C. These
temperature ranges will meet a wide variety of
applications, such as BOD determination, general
incubation and as well as the preservation of critical
materials.
NOTE
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5.3
MODEL 815
Temperature
Set Point
°C
Uniformity
±°C
Temperature
Sensitivity
-10.0 ±0.9
±0.1C
20.0 ±0.5
37.0 ±0.5
50.0 ±0.6
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