Seawater salinity measurement system and method based on orthogonal phase-locked amplification technology
An orthogonal phase-locking and measurement system technology, applied in the direction of material resistance, can solve the problems of complex operation, low degree of automation, and performance degradation of the system, and achieve the effects of accurate measurement results, convenient operation and use, and high stability
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[0036] A specific embodiment includes the following steps:
[0037] (1) Measure the ambient temperature first, and then set the temperature of the constant temperature water tank to be 1-2°C higher than the ambient temperature; for example, if the measured ambient temperature is 22.5°C, set the temperature of the constant temperature tank to T=23.000°C, and wait until the temperature of the constant temperature tank is constant to 23°C ±0.001°C, you can start measuring.
[0038] (2) Start the peristaltic pump, open the ultrapure water inlet of the multi-way valve, inject ultrapure water into the conductivity cell, then empty the conductivity cell, then inject ultrapure water into the conductivity cell again, and empty the conductivity cell; repeatedly clean Pipeline and conductivity cell three times;
[0039] (3) Close the ultra-pure water inlet, open the standard seawater inlet, clean the pipeline and conductivity cell, empty them, and then inject standard seawater again, an...
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