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Judul : How to Select a Pressure Gauge
link : How to Select a Pressure Gauge
How to Select a Pressure Gauge
Mechanical pressure gauges, which require no external power, provide an affordable and reliable source of accurate pressure measurement. The need to select the right pressure gauge requires that the device be accurately specified otherwise
numerous problems might surface in the course of using a wrongly selected gauge. The factors discussed here are by no means exhaustive but they are the main things that will assist you to select the right type of pressure gauge. For the right specification and selection process, consult the manufacturer of the particular gauge you intend to use.
Pressure gauges should be selected by considering the factors below to prevent misapplication. Improper application can be detrimental to the gauge, causing failure and possible personal injury or property damage.
To select the right pressure gauge for your application, the following factors should be considered:
Gauge Accuracy
Pressure gauge accuracy ranges from grade 4A to D according to ASME 40.1. For a mechanical pressure gauge, accuracy is defined either as a percentage of the full-scale range or a percent of the span. As the accuracy increases, so does the price of the gauge. Therefore, the application where the gauge is required should be carefully considered before deciding on the accuracy of the gauge. While requirements differ from one industry to another, the following are general guidelines:
• Test Gauges and Standards: 0.25% through 0.10% full scale accuracies.
• Critical Processes: 0.5% full scale accuracy.
• General Industrial Processes: 1.0% accuracy. Less Critical Commercial Uses: 2.0% accuracy.
numerous problems might surface in the course of using a wrongly selected gauge. The factors discussed here are by no means exhaustive but they are the main things that will assist you to select the right type of pressure gauge. For the right specification and selection process, consult the manufacturer of the particular gauge you intend to use.
Pressure gauges should be selected by considering the factors below to prevent misapplication. Improper application can be detrimental to the gauge, causing failure and possible personal injury or property damage.
To select the right pressure gauge for your application, the following factors should be considered:
Gauge Accuracy
Pressure gauge accuracy ranges from grade 4A to D according to ASME 40.1. For a mechanical pressure gauge, accuracy is defined either as a percentage of the full-scale range or a percent of the span. As the accuracy increases, so does the price of the gauge. Therefore, the application where the gauge is required should be carefully considered before deciding on the accuracy of the gauge. While requirements differ from one industry to another, the following are general guidelines:
• Test Gauges and Standards: 0.25% through 0.10% full scale accuracies.
• Critical Processes: 0.5% full scale accuracy.
• General Industrial Processes: 1.0% accuracy. Less Critical Commercial Uses: 2.0% accuracy.
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