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| {{MitoPedia
| | #REDIRECT [[O2k-Peltier Temperature Control]] |
| |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.
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| |info=[[O2k-Peltier Temperature Control]]
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| {{MitoPedia O2k and high-resolution respirometry
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| |mitopedia O2k and high-resolution respirometry=O2k hardware
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| == Lower limit of experimental temperature ==
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| :::: 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.
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| ::::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.
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| :::: To use lower temperatures than our O2k-specifications , see [[MiPNet06.05 Test Experiments on O2k-Specifications| 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.
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| :::: 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.
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| :::: 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.
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| == Troubleshooting ==
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| === Block temperature does not increase while heating with full power ===
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| ::::* '''Customer ID''': Stier A, [[FI_Turku_Nikinmaa M]]
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| ::::'''Question:'''
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| 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).
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| [[File:Ticket-2020042210000011 O2k Peltier.png|center|700px]]
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| ::::'''Answer:''' See [[DatLab_error_messages#DatLab_error:_Average_block_temperature_over_past_10_min_has_not_reached_set_temperature|DatLab error: Average block temperature over past 10 min has not reached set temperature]] and [[DatLab_error_messages#DatLab_error:_Block_temperature_does_not_increase_while_heating_with_full_power|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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| {{MitoPedia O2k and high-resolution respirometry
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| |mitopedia O2k and high-resolution respirometry=O2k hardware
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