Business > Industrial Devices > Automation Controls Top > Service & Support > FA Technical Support > Technical Guide (FA Sensors) > Pressure sensors > Method of classification & Classification
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The fluid whose pressure is measured could be a gas, water, oil, etc. The transducer which can be used depends on the fluid. Be careful because the transducer may be destroyed by corrosion when used with fluids other than those specified. |
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Classification is based on the reference with respect to which the pressure is measured. |
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The required pressure port differs with the piping done. If the required shape or size of the pressure port differs, it is necessary to use attachments. |
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Type | Description |
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For noncorrosive gases | Diffused semiconductor is used as the transducer. It can be used to measure air pressure. |
For other gases and liquids | Stainless diaphragm is used as the transducer. Besides air pressure, it can be used to measure pressure of gases or liquids which do not corrode stainless steel (SUS 302 and SUS 304) port. |
Type | Description |
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Gauge pressure | Pressure is displayed by taking the atmospheric pressure as zero reference. |
Differential pressure | Pressure is measured with respect to an arbitrary reference pressure. |
Type | Appearance | Description |
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Rc 1/8 female thread |
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M5 female thread |
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10-32 UNF female thread |
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NPT 1/8 female thread |
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NPTF 1/8 female thread |
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G 1/8 female thread |
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R 1/8 male thread R 1/4 male thread |
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M5 male thread |
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10-32 UNF male thread |
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NPT 1/4 male thread NPT 1/8 male thread |
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G 1/8 male thread |
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ø4.8mm ø0.189 in pipe |
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