Environmental Chamber: Difference between revisions
From London Hackspace Wiki
no edit summary
No edit summary |
|||
| Line 24: | Line 24: | ||
* Switches at top - mains, internal lamp, fridge unit | * Switches at top - mains, internal lamp, fridge unit | ||
* Temperature controller - set temperature demand and show temperature. | * Temperature controller - set temperature demand and show temperature. | ||
* Temperature dial - does NOT set | * Temperature dial - does NOT set temperature, It sets the over-temperature trip level at which it will automatically cut out. Set it just above the maximum you will require. | ||
* D-type connector- Don't know. Possibly RS232 to controller. | * D-type connector- Don't know. Possibly RS232 to controller. | ||
Heating operation is straightforward. Just set a temperature higher than ambient and don't switch the fridge on. | Heating operation is straightforward. Just set a temperature higher than ambient and don't switch the fridge on. | ||
Cooling operation is less obvious - I think the cooler itself runs to a very coarse setting and the heater is used for fine control. In particular, I think you have to set an | Cooling operation is less obvious - I think the cooler itself runs to a very coarse setting and the heater is used for fine control. In particular, I think you have to set an auxiliary control output on the temperature controller to enable the cooler. I have had this working so it's not impossible but may require a bit of fiddling. | ||
==Careful== | ==Careful== | ||
