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O2k-Peltier Mitopedia

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Revision as of 08:17, 11 May 2020 by Garcia Luiz (talk | contribs)


high-resolution terminology - matching measurements at high-resolution


O2k-Peltier Mitopedia

Description

O2k-Peltier Temperature Control: Built-in electronic thermostat controlling temperature for two O2k-Chambers in the range of 4 to 47 °C; ±0.002 °C (at room temperature). Continuous recording of the O2k-Copper Block temperature with DatLab. Temperature change from 20 to 30 °C within 15 min; cooling from 30 to 20 °C within 20 min. Integral component of the O2k-Main Unit. The electronic temperature control of the O2k replaced the conventional water jacket.


Reference: O2k-Peltier Temperature Control





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Lower limit of experimental temperature

From O2k-Series E there is a more efficient temperature management system in comparison compared to previous series. At an ambient temperature of 21.1 °C a stable Peltier power of about -83% reached 0 °C from 37 °C in about 1 h.
For an ambient temperature of 25 °C, the O2k-Chamber can reach lower temperatures down to 4 °C. The use of lower temperatures is not within our O2k-specifications, therefore we did not evaluate the quality control parameters under these conditions. Please, take special precaution with your set temperature to 0.5 °C, you could have a damage in the chambers or any other component.
To use lower temperatures than our O2k-specifications , see test experiments on O2k-Specifications. Please note that lower ambient temperature does not necessarily mean a "cold room". For a chamber temperature of 2 °C, an air-conditioned room is sufficient.
For experiments at 0 °C, the O2k can be exposed to ambient temperatures down to just above 0 °C (all the electronic components are rated at least down to 0 °C, but 0 °C room temperature should be avoided due to condensation concerns). For low room temperatures close to 0 °C, some means of humidity control should be used.
With O2k-Series D a stable chamber temperature of 0 °C was obtained at a room temperature of about 14 °C. The cooling power of the Peltier element reached 95% of its maximum capacity.

Troubleshooting

Block temperature does not increase while heating with full power

Question:

Our O2k (likely bought in 2004) seems to have a problem of temperature control (error message + T°C staying at RT despite a set T°C of 40°C). Following the instructions of DatLab_error_messages; I switched it off and on (likely > 10 times), tried with an older version of the software and different temperature (20 to 40°C), but nothing seems to fix the issue. Representative data is attached (2020-04-22).

Ticket-2020042210000011 O2k Peltier.png
Answer: See DatLab error: Average block temperature over past 10 min has not reached set temperature and DatLab error: Block temperature does not increase while heating with full power. If the problem persists, the O2k-Peltier Temperature Control has an electronic defect and the O2k-Main Unit has to be sent to the electronics workshop of OROBOROS for service.


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