Calibrations are conducted at various flow rates to mimic the range of water flow that the meter may encounter in normal operation. Different flow rates ensure that the meter performs accurately across its entire measurement range. CLL offer to calibrate positive and negative flow rate. The totalizer of flow rate id showing up to 7 digit. The flow rate unit are Meter, Feet, Cubic Meter, Cubic Feet, Liter, User Configurable for measurements.