C.B.S. Scientific TTGEK-2401-220 - Manual (Page 28)

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3.3 Heater/Stirrer Programming- con’t.
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Programming Examples
Example A
Initial Bath Temperature = 25°C
Program Priority = Temperature
Desired Profile: Cool bath temperature to 20°C and hold it there for 25 minutes.
Increase bath temperature to 30°C and hold it there for 15 minutes.
Increase bath temperature to 50°C over a 45 minutes period.
Decrease bath temperature to 5°C and hold.
This example requires a 6-step program:
Program
Step
Step Set
Point
Step
Duration Controller Operation
1 20°C 25 minutes
Controller cools fluid to 20°C as fast as possible. Until
20°C temperature set point is achieved, “Starting”
appears on the display. When fluid temperature reaches
20°C, “Running” appears on the display.
Fluid temperature maintained at 20°C for 25 minutes.
2 20°C 1 second
Controller heats fluid as fast as possible until the 30°C set
point programmed for Step 3 is reached.
3 30°C 15 minutes Fluid temperature is maintained at 30°C for 15 minutes.
4 30°C 45 minutes
Controller slowly heats fluid until 50°C set point
programmed for Step 5 is reached. Ramp rate is based
on the 45 minute step duration.
5 50°C 1 second
Controller then cools fluid as fast as possible until 5°C set
point programmed for Step 6 is reached.
6 5°C 1 second
“Complete” appears on display. 5°C fluid temperature is
maintained until set point is changed.
0
5
10
15
20
25
30
35
40
45
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0 5 15 30 45 60 75 90 105 120 135 150 165
Minutes
Degrees C
Step 1
Step 2
Step 3
Step 4 Step 5
Step 6