Combines Quantimeter

Ag leader is a very good yield monitor, as well is the Quantimeter on the lexion combines. Each yield monitor has its own mode of operation and is only as accurate as the quality of calibration. The Ag leader works on a mass flow principle, measuring the force at which the grain strikes the flow sensor. this method is very accurate when operating on a flat plain but, when the machine begines to pitch and yaw due to changes in terrain, the grain strikes in alternate locations on the sensor resulting in potentially skewed readings. However, correction factors have been implemented in the form of correction algorithms as an attempt to compensate for machine position and speed. For themost part the correction factors work well. However, there are situations where they may either over_under compansate due to operating conditions. The Quantimeter on the lexions works in a much different fashion. The quantimeter uses infrared light tomeasure the grain's volume as it travels the clean grain elevator. This method reduces the amount of moving parts and does not require the installment of foreign components that typically wear on mass flow systems. The quantimeter is compensated by a slope meter and is not suceptible to fluctuations in engine and elevator RPM that reduce the force that grain would hit a mass flow sensors and tax its ability to compensate. Calibration is also very different. The Ag leader types require multiple calibration runs to simulate flow rates throught he machine which result in ample downtime for calibrations. The Quantimeter is calibrated by accumulating a single amount (a grain tank or truck load) and determining its value. Each calibrate moisture in similar fashion. However, the quantimeter is the only yield monitor that offeres a self-cleaning moisture sensor to reduce error in wet_green conditions. Both write date to standard PCMCIA cards and the quantimeter is managed from the single combine monitor for all machine monitoring and adjustments (no additional in-cab monitor or device to add clutter). Both systems are comparable for accuracy. however, I always tend to go for the factory installed system as that is the system which is designed for and conforms to the machines grain handling specs.

as you know claas or cat {in USA}are very large in the UK .we have found that the Quantimeter is a good guide but not the be all and end all of grain yeilds.most of the large yeilds in the UK come from growers who guote their yeilds in the pub after a few beers,and it does not matter which type of yeild metter is used.with the claas system it is important to load in the bushel weight of the grain and to reduce the width of the header on short cuts in the field.the optical light sensor must be kept clean and the clean grain elevator chain has to tight.the moisture meter is very acurate but it needs calibrating with the grain merchant or the end user,this is done on the cebis unit using the corection cursors.claas comitment totheir users and dealers in europe and the UKis first rate and any one visiting their factory in Germany will return a light shade of green.i hope this continues under cat for you guys in the USA with the depature of claas.

IT is obvious you do understand the differences in the yield monitors. Very few do. But I prefer Al. It is another monitor- but you can do so much more- just check agleader's website out. It is the standard in the industry. There is even a cottage industry building which makes cables and such which Al does not offer. I never have run the Cat monitor which is quantity based, but I am convinced it will not preform as well as most producers expect. It is quantity based. Deere tried this approach ( after they could not but Al ) and gave up. In my opinion, there is no way to make a quantity based yield monitor accurate enough. I do custom for a fellow who thinks he can counto hopper wagons- he is never within 10%. That is a also quanttity based. The Al leader dose a very nice job trying for field installations. Not as good as factory, but still very nece.