17 Barnstead|Thermolyne • 800-553-0039
Operating the Controller
CAUTION
Do not exceed limitations for continuous or intermittent operating temperature shown in
the General Specifications (in furnace manual). Exceeding these limits will result in
severely reduced heating element life.
Single Set Point Operation
The programmable control can be used as a single setpoint control or as a programmable control. To use
as a single set point control simply push up or down buttons to choose a specific temperature. The
control will cause the furnace chamber to heat to the chosen temperature and hold this temperature until
the power switch is set to OFF or another temperature is selected.
a. The setpoint temperature presently set in the control will be read out on the lower display.
b. To change this set point, depress the "UP" or "DOWN" push button until the desired setpoint value is
displayed then release the button.
c. At this point the furnace will begin to heat if the new set point temperature you have chosen is higher
than the present chamber temperature.
Programming Controller
To run a program, first determine your ramp rate, dwell times. and program levels. It is helpful to graph
your program out for ease of loading the program into controller.
A maximum of 2 ramp and 2 dwell segment combinations are available, thus enabling 2 different set point
levels to be achieved. Each ramp is programmed by specifying the temperature level (L1) and the
required ramp rate (r1). The programmer then automatically calculates the time that is required to attain
the temperature level (L1) based on the desired ramp rate (r1). Dwell segments (d1) then can be
attached to each temperature level (L1) to hold that temperature for a specified amount of time.
Make sure the PROG parameter is set to idle (to stop program) when entering program values. (See
Parameters.)
Push "PAR" until "r1" is displayed. Push "UP" or "DOWN" buttons and set ramp rate "r1" (heat increase or
decrease) in °C/minute.
Push "PAR" until "L1" is displayed. Push "UP" or "DOWN" buttons and set temperature level "L1." This is
the target temperature for the first ramp.
Push "PAR" until "d1" is displayed. Push "UP" or "DOWN" buttons and set dwell (soak) time "d1" in
minutes.
Push "PAR" until "r2" is displayed. Push "UP" or "DOWN" buttons and set ramp rate "r2" in C/minutes.
Push "PAR" until "L2" is displayed. Push "UP" or "DOWN" buttons and set temperature level "L2." This is
the target temperature for the second ramp.
Push 'PAR'' until "d2" is displayed. Push "UP" or "DOWN" buttons and set dwell (soak) time "d2" in
minutes.
To Next Page
Loading...