What does the Make-up Water Meter measure?

The Make-up Water Meter is specifically designed to measure the amount of water that is added to a boiler system to compensate for losses. These losses can occur due to various factors such as steam venting, leaks, or evaporation, and it is essential to maintain the correct water level in the boiler for efficient operation. By accurately measuring the make-up water, operators can ensure that the system is replenished appropriately, which is critical for maintaining pressure, efficiency, and safety in the boiler operations. The other options do not pertain to the primary function of the Make-up Water Meter, as it does not measure steam loss, temperature, or conductivity.