Where must the calibration point be located in a wet hose system?

In a wet hose system, the calibration point should be located at the nozzle. This is because the nozzle represents the point of use where the fuel is actually dispensed and where accurate measurements are critical. Calibration at the nozzle ensures that the measurement reflects the actual flow and delivery to the end user, taking into account all potential losses and variations that may occur in the system leading up to that point.

Calibrating at the nozzle allows for real-time adjustments and verification of flow rates, which is essential for maintaining accuracy and compliance with relevant measurement standards. By focusing on the nozzle, operators can ensure that the measurements taken are reflective of the actual dispensing conditions that users experience.

Calibrating at the meter, pump, or fuel tank may not provide an accurate representation of the fuel delivered to the end user since these points do not consider the dynamics of flow through the nozzle and any effects that may occur during the dispensing process. Thus, having the calibration point at the nozzle is key to ensuring precision and reliability in measurement within a wet hose system.