If the solution temperature is lower than 70 degrees, how should you adjust the oil unit of expansion?

In situations where the solution temperature is lower than 70 degrees, it is essential to make adjustments to the oil unit of expansion in order to maintain operational efficiency and effectiveness. When temperatures fall, the thermal expansion of liquids can lead to inaccurate readings if not compensated for.

Adding oil units for every 3 degrees below 70 allows for the correction of the expansion coefficient that is influenced by temperature changes. As the temperature decreases, the oil tends to contract, which means the measurements would reflect a lower volume than what is actually present. By increasing the oil units accordingly, you ensure that the operational calculations remain accurate despite the lower temperature.

This method is critical for maintaining performance standards and ensuring that equipment operates correctly under varying conditions. Thus, the correct adjustment aligns with the principle of compensating for the temperature changes to maintain precise measurement and operational reliability.