Calibration

Calibration, which is a fine adjustment of capacity, can be performed in the same way as the capacity controls previously discussed by using a fine stroke adjustment mechanism. It can better be achieved using electronics linked to the pumped volume display. A shaft encoder is connected to the meter that outputs pulses proportional to the volume pumped.

The number of pulses is selected relative to the display resolution required. If 155 th of a liter were required on a nominal cyclic volume of 1 liter, 105 pulses would be provided per revolution. The pulses are fed into counting and processing electronics. The electronics are put in calibrate mode and a fixed measure pumped into a calibrated vessel. The electronics counts the number of pulses received for the known volume pumped, compares that to the number of pulses it should have received, and calculates a calibration factor for that meter. This factor is stored in nonvolatile memory, and used by counter to "discard" extra pulses when the pump is in normal delivery mode. The 105 pulses per revolution is used to make sure that there are always extra pulses to discard allowing a ±5% manufacturing variation on the nominal cyclic volume. The calibrating electronics can also store batch and lifetime volumes pumped totals, and supply this information to a local or remote display.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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