No Glue - Verifying the Adhesive Has Been Dispensed

A method sometimes used is to check the pressure-time response of the adhesive dispense valve. 

In a pressure-time dispensing system (see Section 8.3), the adhesive is forced under pressure through a valve so that the desired quantity is dispensed onto the component part. As the dispense valve opens and closes, the pressure-time response curve can be monitored just upstream of the nozzle tip. 

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