Why J.M. Fry recommends Gravimetric Systems
The majority of SPEC dispensing systems are gravimetric and operate by controlling pneumatic pumps and valves to accurately weigh each component in a formula. This method of automated dispensing has several benefits. A single measuring device (the scale) means only one component to calibrate.
In addition, the scale accuracy can be easily confirmed by placing a certified weight on the scale and reading the indicated weight. Volumetric dispensing systems have a measuring device (metering pump) for each component being dispensed. For example, what happens if the supply container runs out of ink while dispensing on a volumetric system? Does all or part of that component simply get left out of the formula? In this case, the SPEC gravimetric system would sense no increase in weight on the scale and display a "no flow" alarm and wait for the operator to refill or replace the supply container. This closed loop control method provides real dispense data which is very helpful whenever a problem occurs to help determine what caused the problem (off shade, wrong viscosity, etc.)
In addition, since gravimetric systems weigh each component, they are not susceptible to changes in temperature. The weight does not change with temperature variations. Volumetric systems measure volume, which changes with temperature
At J.M. Fry we deliver only the most up-to-date and efficient color dispensing equipment.
The majority of SPEC dispensing systems are gravimetric and operate by controlling pneumatic pumps and valves to accurately weigh each component in a formula. This method of automated dispensing has several benefits. A single measuring device (the scale) means only one component to calibrate.
In addition, the scale accuracy can be easily confirmed by placing a certified weight on the scale and reading the indicated weight. Volumetric dispensing systems have a measuring device (metering pump) for each component being dispensed. For example, what happens if the supply container runs out of ink while dispensing on a volumetric system? Does all or part of that component simply get left out of the formula? In this case, the SPEC gravimetric system would sense no increase in weight on the scale and display a "no flow" alarm and wait for the operator to refill or replace the supply container. This closed loop control method provides real dispense data which is very helpful whenever a problem occurs to help determine what caused the problem (off shade, wrong viscosity, etc.)
In addition, since gravimetric systems weigh each component, they are not susceptible to changes in temperature. The weight does not change with temperature variations. Volumetric systems measure volume, which changes with temperature
At J.M. Fry we deliver only the most up-to-date and efficient color dispensing equipment.