Improved yield monitor with unmatched accuracy and repeatability. YieldSense measures crop flow and grain properties more accurately than OEM monitors. YieldSense includes a flow sensor, and a elevator chain with molded paddles and grain property bucket. The system is easy to calibrate, and stays properly calibrated over the season. One big advantage is the property bucket, which monitors changes in grain such as test weight, and adjusts measurements accordingly. YieldSense is run by a 20/20 SeedSense, and is compatible with most common combine models.