Until a few years ago, food vacuum packing required the machine’s user to set the pump operation time in one way or another to achieve the required vRegular calibration is necessary for sensor-controlled vacuum packers, as they need to know the actual atmospheric pressure to be able to determine the precise vacuum.
Distform TekVac sensor-controlled vacuum packers include the patented Self Calibration System algorithm, by which the vacuum packer is calibrated automatically without any intervention from the user. This means a convenience for users that other brands do not provide. Have you already got yours?
The pump flow, the size of the chamber, the amount of food and even the atmospheric pressure affect the final result of the vacuum, giving different results with the same time.
As users are incapable of knowing the time they need to vacuum pack food a priori, generally a long pump operation time is chosen to assure maximum vacuum. This has many drawbacks: it lengthens the packing cycle, eliminates the moisture from the food and even emulsifies the moisture that the food has released with the oil of the pump, thus reducing its lifespan.
The arrival of vacuum level electronic sensors led to vacuum packers that automatically control the vacuum level and keep the vacuum pump working until the level required by the user is reached. The vacuum packer is therefore capable of reading the real vacuum level within the packing chamber.
Also thanks to the vacuum sensor, these vacuum packers allow precise inert gas injection, either to increase the preservation time, to adjust the taste, smell or appearance of the product, or simply to ensure that the vacuum packing bag does not stick to the food.
There follows a summary of the principal characteristics of the time-controlled and sensor-controlled vacuum packers.