Tank pressurization control for air carts

A pneumatic distribution system configured to distribute a granular product to an agricultural implement, wherein the pneumatic distribution system comprises:

• a primary line configured to pneumatically deliver the granular product to the agricultural implement by guiding an air stream from a first section of the primary line with a larger cross-sectional area to a second section of the primary line with a smaller cross-sectional area;
• an air source fluidly coupled to the first section of the primary line, wherein the air source is configured to output the air stream;
• a secondary line fluidly coupled between the first section of the primary line and a storage tank configured to store the granular product;
• a valve fluidly coupled to the secondary line, wherein the valve is configured to selectively enable the air stream to flow through the secondary line from the primary line to the storage tank;
• a first pressure sensor fluidly coupled to the storage tank, wherein the first pressure sensor is configured to output a first signal indicative of a first static pressure in the storage tank;
• a second pressure sensor fluidly coupled to a meter housing, wherein the second pressure sensor is configured to output a second signal indicative of a second static pressure in the meter housing;
• and
• a controller communicatively coupled to the first pressure sensor, to the second pressure sensor, and to the valve, wherein the controller is configured to instruct the valve to enable the air stream to flow from the primary line into the storage tank until the first static pressure is greater than the second static pressure by a threshold amount.