An electronic valve controller for current control during the recording of oxygen consumption in aquatic animals | Zendy

H.H. Du Preez | Zendy; E. Grobler | Zendy; J. M. Bell | Zendy

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An electronic valve controller for current control during the recording of oxygen consumption in aquatic animals

Author(s) -

H.H. Du Preez,

E. Grobler,

J. M. Bell

Publication year - 1989

Publication title -

suid-afrikaanse tydskrif vir natuurwetenskap en tegnologie

Language(s) - English

Resource type - Journals

eISSN - 2222-4173

pISSN - 0254-3486

DOI - 10.4102/satnt.v8i2.873

Subject(s) - power consumption , oxygen , controller (irrigation) , respiration , control valves , power (physics) , current (fluid) , electrical engineering , environmental science , engineering , chemistry , control engineering , biology , anatomy , physics , organic chemistry , quantum mechanics , agronomy

A control system is described which allows the automatic recording of the oxygen consumption of five aquatic organisms and one control. The electronic valve controller operates six three-way valves which permit water from each of the six respiration chambers to flow successively past the oxygen sensor. A 38.4 kHz quartz cristal oscillator ensures a ten minute period and is not affected by disturbances on the power circuit

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