Effect of Pressure on Deep-Ocean Thermometers
In: International Journal of Thermophysics. SPRINGER/PLENUM PUBLISHERS: New York. ISSN 0195-928X; e-ISSN 1572-9567, more
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| Author keywords |
Deep-ocean thermometers; Pressure effect; Thermistors |
| Authors | | Top |
- Peruzzi, A.
- Ober, S., more
- Bosma, R.
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| Abstract |
A laboratory experiment was devised and performed to investigate the pressure dependence of Sea-Bird Electronics SBE35 and SBE3 deep-ocean thermometers. The thermometers were mounted in a massive brass comparator together with a calibrated standard platinum resistance thermometer. The measurements were performed in a pressure chamber in the pressure range 0.1 MPa to 60 MPa. The results showed that both the investigated SBE35 and SBE3 thermometers are pressure dependent, with a pressure sensitivity of +41 μ μK⋅ ⋅MPa −1 −1 and −77 −77 μ μK⋅ ⋅MPa −1 −1, respectively. Nevertheless, the results obtained in only one individual device per model (one SBE35 and one SBE3) cannot be generalized and further investigations of a larger number of devices per model are needed. |
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