Pressure-Pointing Device

Pressure, pointing devices are the most important in the refrigeration field. It is necessary to know the pressure in some part of the system to find the problem areas.

Aperture flexible sheet material held firmly around its perimeter so there can be no leakage from one side to the other (see Fig. 4-5). Force applied to one side of the diaphragm will cause it to move or flex. Aperture, in some cases, made from flat sheet of material with limited mobility. Other aperture, at least one of the corrugation, or fold. This allows more movement at the point where the work is performed.

Some types of pressure regulators you want more traffic per unit of force applied. To achieve the desired result, the diaphragm is attached to the chassis, the section with a few brains or folds, called furs. Thus, the diaphragm moves in response to changes in pressure. Each has only a small amount (see Fig. 4-6). Below the item can be collected to enlarge or shrink the pressure. The bellows itself serve as a source of return aperture section in starting position when the pressure drop is reduced to zero. If the above spring return rate required to meet or to determine the measured pressure range corresponding to the spring is added.

Some types of pressure regulators require more traffic per unit of force applied. To achieve the desired result, the diaphragm is attached to the chassis, the section with a few brains or folds, called furs. Thus, the diaphragm moves in response to changes in pressure. Each has only a small amount (see Fig. 4-6). Below the item can be collected to enlarge or shrink the pressure. The bellows itself serve as a source of return aperture section in starting position when the pressure drop is reduced to zero. If the above spring return rate required to meet or to determine the measured pressure range corresponding to the spring is added.

One of the most widely used kinds of pressure-measuring elements Burdon spring tube. They are easily adapted to different types of documents (see Fig. 4-7). Bourdon tube flattened tube bent into a spiral or circular, closed at one end. When the liquid pressure used inside of pipes, tubes, as a rule, straighten or relax. This produces a movement that can be applied in the indicator position or of giving effect to the controller.