Max 7 gswitch more inlets how to#
Max 7 gswitch more inlets Patch#

Max 7 gswitch more inlets Patch#

Part of creating an interactive (or performance-based) Max patch is presenting options, and allowing for selection from among these options. These objects will be used to vary the drawing commands used for an interactive drawing routine. We will also examine user interface elements that can be used to manage these controls, including the radiogroup and matrixctrl objects. For more information about pump selection or calculating NPSH values for your application, check out our NPSH guide or contact us.In this tutorial, we will learn some techniques for regulating data flow within a Max patch, using the gate, switch and router to direct events. Our pumps are used in a variety of applications ranging from unloading rail cars to pumping liquids, pastes, and gels. Springer Pumps features fluid handling solutions for a broad range of industries.

**Learn More About MasoSine Pumps and Their Low NPSH R HERE… Pump Selection Assistance from Springer Pumps **This is only a brief summary of THIS paper put together by MasoSine Process Pumps Using this formula ensures selection of a pump whose NPSHr is less than the greater of 10% of NPHSa and 5 feet.

Hvp = absolute vapor pressure of the fluid at the operating temperature.

Ha = absolute pressure of the fluid at the inlet of the pump.

So absolute pressure is used for calculating NPSHa using the formula: Vapor pressure of a fluid is expressed as absolute pressure.

Absolute Pressure = Gauge Pressure + Atmospheric Pressure.

Atmospheric pressure, nominally 14.7 psi at sea level, is added to gauge pressure to get absolute pressure. The readout of a pressure gauge is called gauge pressure. Pressure gauges measure pressure relative to atmospheric pressure. It is necessary to measure pressure accurately with pressure gauges to ensure selection of the right pump for the job. If the suction source is below the pump, the vertical distance between the two reduces the NPHSa at the pump’s inlet. Cavitation occurs more readily at higher temperatures since vapor pressure increases with temperature.

NPHSa calculations should consider the temperature of the fluid and the distance between the pump and the suction source. For example, if NPHSr is 10 feet, NPHSa must be at least 15 feet. As explained above, it is crucial to maintain a positive margin between NPHSa and NPHSr.Īs a general rule, make sure that NPHSr is less than NPHSa by the larger of 5 feet or 10% of NPHSa. NPHSa-the NPSH available at the inlet-depends entirely on the operating environment, including the temperature of the fluid being pumped. Pitting also depends on the hardness of the material that the pump is made from, which makes that a factor as well. NPHSr, the NPSH required for the proper operation of the pump, depends on the pump design, the rotational speed of its impellers, and its age.

Max 7 gswitch more inlets how to#

How to Use Net Positive Suction Head to Select a Pump Most importantly, cavitation removes small spots of material from the inside walls of the pump, pitting the walls and causing permanent damage to the pump. The bubbles in the fluid also reduce the capacity of the pump. This cavitation causes the pump to operate noisily, making it sound like something like gravel in a concrete mixer. These bubbles collapse rapidly inside the pump as they move towards the outlet.

If the pressure at the inlet falls below the vapor pressure of the fluid, bubbles will form at the inlet. As the fluid flows through the pump, it experiences steadily decreasing pressure along the flow path. Pumps work by creating a pressure differential between the inlet and the outlet-the high pressure at the inlet causes fluid to flow towards the low pressure at the outlet. The systems NPSH A must be higher than the pump’s NPSH R in order for proper pump performance and to eliminate the risk of cavitation, which can damage a pump in short order and shut down operations that depend on that pump. NPSH or Net Positive Suction Head is a very important part of a pumping system. NPSH Required (NPSH R): The minimum pressure required at the suction port of the pump to keep the pump from cavitating. NPSH Available (NPSH A): The absolute pressure at the suction port of the pump. Pump designers use NPSH to ensure that pumps will operate without internal damage caused by cavitation under all specified operating conditions. The NPSH margin value must be positive to avoid cavitation. Cavitation is the formation of bubbles at the pump inlet, followed by their sudden collapse, which can cause permanent damage. It is the difference between the NPSH available (NPSHa) at the pump’s inlet and the NPSH required (NPSHr) by the pump to operate without cavitation. The Net Positive Suction Head (NPSH) margin is a crucial factor that is commonly overlooked while selecting a pump.