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Calibration 5.0
Calibration & Pump Priming
1. Read the entire chemical label and MSDS to make sure you
under stand the usage and rates to be applied. Take special note
whether the recommended application rate of the chemical is given
in uid ounces per bushel or in uid ounces per cwt. of seed. If the
application rate is given in ounces, you will have to convert cc’s. To
do so, multiply ounces by 29.6 cc’s = cc’s of product to be applied.
The rate must be known prior to treater calibration.
Example: You have decided that the use rate of your chemical is
5 uid oz. per cwt. of seed and you will be mixing it with 5 ounces
of water. Your application rate is now 10 ounces of product.
10 ounces x 29.6 cc’s = 296 cc’s
2. Mix chemical for a short period of time. To do this, you must rst
shut OFF the ball valve. This will allow chemical agitation without
pumping to your drum. Turn remote switch to ON position for
mixing. Note: It is especially important to resuspend the chemical
prior to the start of each treating day or before each treating
period.
3. You are now ready to prime the pump. Open the ball valve on
the premix tank. Disconnect the discharge hose from the tting in
the inlet transition and place it into the chemical tank.
Run the pump manually for 2-3 minutes set at.
Once you have primed the pump and warmed up the hose, you are
ready to calibrate. Remove the hose from the tank and place the
discharge hose in a measuring cup or calibrated beaker.
Example: It has already been determined that your chemical
application rate is 10 ounces (296 cc’s) uid oz. per cwt., and you
ran 60 pounds of seed in one minute. Therefore it is necessary to
catch 177.6 cc’s of chemical in your measuring cup in one minute
(296cc’s ¸100 = 2.96cc’s x 60 pounds = 177.6).