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Pumping Pressure Gauges
Pumping Pressure Gauges
Pressure gauges are a critical component to the safe operation of pumping systems.pumping pressure gauges They help to protect pumps, piping and nozzles from overload which can shorten equipment life and cause premature failure. They also provide a quick and convenient reference point for ensuring frequent monitoring of system performance. Pressure gauges are typically installed on the suction and discharge sides of the system.
There are many different types of pressure gauges available to choose from for a given application.pumping pressure gauges Each type has its own unique set of advantages. Some are designed for particular working environments like ATEX versions for use in potentially explosive atmospheres. Other types are engineered for a specific industry or business like petrochemicals, food or oil & gas processing. There are also a number of different methods or dynamics that can be measured such as absolute, gauge and atmospheric. Each method has its own unique set of requirements that must be met.
A pressure gauge is a mechanical device that converts fluid pressure into mechanical movement that can be displayed on a dial.pumping pressure gauges Most of today's pressure gauges are manufactured with either a bourdon tube or diaphragm flexible measuring element. The bourdon tube works on the principle that a flattened metal tube will try to return to its original circular cross-section shape as it is pressurized (similar to how a party horn is used).
Other types of pressure gauges are manufactured using piezoresistive, electromagnetic or capacitance technology.pumping pressure gauges In the case of piezoresistive gauges, a sensor is connected to a diaphragm with a material such as silicon that expands or contracts under pressure. This causes a change in electrical resistance that is sensed by the sensor and converted into a mechanical movement of the gauge pointer.
Most of today's pressure gauges display readings in units such as bar or psi. The dial of a gauge is usually marked with the unit of measurement, a pressure range and an accuracy standard. The accuracy standard is a percentage of full scale which tells how accurate the gauge will be within that range.
Gauges on pumps are generally filled with glycerine which helps to reduce shock and vibration forces on the instrument while also acting as a lubricant and coolant for the moving parts inside. It is recommended that gauges on pumps are periodically inspected and visually confirmed to be in good condition. Gauges should be recalibrated annually to ensure the highest levels of safety and accuracy.
The proper placement of a pressure gauge on a pump is important for optimum function. The gauge should be mounted close to the point of measurement in order to provide the most accurate reading. For example, a pressure gauge should be placed on the discharge side of the pump and connected to port N1 while a suction pressure gauge should be connected to port N2. It is recommended that a compound gauge be used which displays both positive and negative pressures on one dial.
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