Acragage diaphragm seals offer a solution to many difficult process applications. The function of the seal is to intercept the pressure of the process fluid, and by means of a fill fluid, transmit pressure variations directly to the pressure gauge, pressure switch, or other pressure instrument.
This optional Acragage® feature provides for completely purging all air from the Bourdon tube in sealed systems or in solid-filled gauges, (such as those with diaphragm-type chemical attachments). The removal of all air allows the gauge to function accurately, without spongy or sluggish action. This is extremely important on chemical gauges in low pressure ranges where diaphragm effect must be minimized, or in high pressure ranges where diaphragm travel is limited.
They also prevent or reduce the instances of clogging due to viscous fluids with suspended solids.
The connection between the instrument and diaphragm seal may be direct or remote by an unprotected capillary or by a flexible armor-sheathed capillary.
Materials may be selected which offer resistance to almost any corrosive process fluid.
Process fluid temperatures can range from -40 to 600° F. The determining factors are the fluid diaphragm material and the bottom housing material.
All above materials are standard. Other materials and options are available upon request. See the Model Selection Chart - Diaphragms for more information.
