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Surge and Ripples - The Disc Spring design used in Dual-Snap@ Switches makes them relatively impervious to surges or pump ripples that may be expected in conventional hydraulic systems. This resistance to sharp pressure changes in the media has been the prime reason for many customers changing to Dual-Snap pressure switches after experiencing false shutdown and failure with other competitive design
principles such as flat metal diaphragms, bourdon tubes and bellows type. This makes Custom Component Switches particularly suitable for rugged applications on off the road machinery, heavy presses and systems using pulsating piston pumps
Seismic Shock and Vibration - Due to their unique design principle, Dual-Snap pressure switches will meet all the conventional seismic shock and vibration specifications now being applied to many projects such as power plants for ecological protection. These specifications by their severity eliminate the use of mercury filled switching elements and many vibration critical pressure sensing elements
found in most competitive designs.
Application Conditions - Ambient Temperature: The pressure switch should be installed wherever possible in a location that has the most constant ambient temperature available. Steam Service: For steam or other high temperature applications the pressure switch should be mounted with the pressure connection up and with three or four circular loops, or pigtails, in the pressure lines. The vertical
mounting allows condensate to accumulate in the dead ended pressure line and to be cooled in the pigtail which acts as a heat exchanger. This column of condensate will act as a temperature buffer between the sensing element and the steam.
Installation - The pressure switches can be mounted in any position. When the electrical conduit is connected, it is recommended that the conduit line (if it is over 6 feet in length) be clamped firmly close to the switch to keep thermal expansion from causing it to place a high stress load onto the housing of the pressure switch. If moisture in the conduit line is a potential problem, it is recommended
that a potting Y connection be placed between the switch and the conduit. This will eliminate drainage from the electrical conduit into the pressure switch housing. Line mounting is possible and recommended for any of our "Compact" pressure switches. See installation Instructions
Corrosive Fluids - Occasionally liquids or gases are encountered that are not compatible with the "wetted parts" as shown in the catalog. When this occurs it is common practice to use a chemical seal as an interface between the corrosive fluid and the pressure switch.
Note: Custom Control Sensors does not manufacture or accept orders for chemical protectors. The reason for this is to insure that the customer gets exactly what he needs for his application. We will drop ship switches to any manufacturer of chemical protectors that the customer may specify, or we can recommend a suitable source of supply if asked. The customer can then place a purchase order with appropriate instructions directly with his
source of supply so that the supplier can then coordinate the customer’s wishes with the chemical protector that will be assembled, filled, calibrated and tested to fit the needs outlined. |
