Brookfield Temperature Controller, Model 106 - Manual (Page 14)

Brookfield Engineering Labs., Inc. Page 4 Manual No. M/02-207-C009
6) Temperature control of the Thermo Container will be maintained for as long as the Temper-
ature Controller is powered up, or until the
RUN
STBY
key is pressed to stop the control action.
VI.4 Program Mode
There are two options available to the user in the PROGRAM MODE:
1) Run a program and terminate temperature control at the end of the program cycle.
2) Run a program and maintain temperature control at the last program setpoint temperature.
The fundamental approach to programmed operation is to create a table that includes the desired
temperatures and the hold time period that is required for each temperature. A sample tempera-
ture/time program is shown in Table 7. Entry number 6 in the table is the last desired temperature
step. Please note that the remaining program slots 7, 8 and 9 may have temperatures in them.
SAMPLE TEMPERATURE/TIME PROGRAM
TEMPERATURE
(°C)
HOLD TIME
(Minutes)
ENTRY
NUMBER
100.0 5 0
140.0 15 1
160.0 10 2
205.0 8 3
240.0 4 4
265.0 5 5
290.0 2 6
Table VI.1
The time required to reach a temperature set point is dependent on a variety of factors such as
the ambient temperature and the difference between the desired temperature and the previous
temperature. The temperature/time program indicates how long the Thermo Container should be
maintained at the selected temperature before the temperature is changed to the next temperature.
The Programmable Temperature Controller allows individual “hold” times for each temperature
VI.5 Entering A Temperature/Time Program
In this section you will learn how to enter a temperature/time program. Essentially the steps are:
• Enter the program temperature/time steps one at a time sequentially until your program is
defined or until you reach the ten (10) step limit whichever comes first.
• Choose to either maintain the last programmed (not necessarily the tenth program step)
temperature at its setpoint value or, choose to stop maintaining temperature control when
the last program step time has expired.
• Select the start and end steps which will define your program. If you have entered ten
(10) program steps, you could execute all ten (10) steps or you could elect to only execute
a contiguous sub-set of the ten steps.