velleman K2649 Thermostat with LCD Display Instruction Manual
Use
17. Use
The set temperature is displayed when you push the button S1.
You can change it by gradually turning potentiometer RV1 until the display shows the desired temperature.
With the standard values for R2 and R33 (91K resp. 22K), the adjusting range is about 5 to 30°C (40 to 85°F).
You can change this range by using other values for R2 and R33 :
Range
R2
R3
-50°C (-60°F) to 0°C (32°F)
51K
7K5
+50°C (120°F) to 100°C (212°F)
+100°C (212°F) to 150°C (300°F)
33K
33K
12K
16K
ꢄ
You can also experiment yourself in order to obtain an optimum adjusting range for your application.
ꢀSolder a 1M trimmer parallel to both R2 and R33 (see fig. 7.0).
ꢀAdjust both trimmers so that you obtain the optimum range.
ꢀAfterwards replace the trimmers by normal resistors which approximate the set value as close as possible.
17
| General | Details |
|---|---|
| Name | velleman K2649 Thermostat with LCD Display Instruction Manual |
| Make | Velleman |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.56 MB |
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