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Method of classification & Classification - Pressure sensors

Method of classification & Classification

Method of classification

(1) Classification by applicable fluid

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.

Pressure sensor For non-corrosive gases
(diffused semiconductor transducer)
For other gases and liquids (which do not corrode stainless steel SUS 302 and SUS 304)
(Stainless diaphragm)

(2) Classification by type of pressure

Classification is based on the reference with respect to which the pressure is measured.

Pressure sensor Gauge pressure
Differential pressure

(3) Classification by pressure port

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.

Pressure sensor Rc 1/8 female thread
M5 female thread
10-32 UNF female thread
NPT 1/8 female thread
NPTF 1/8 female thread
G 1/8 female thread
R 1/8 male thread
R 1/4 male thread
M5 male thread
10-32 UNF male thread
NPT 1/8 male thread
NPT 1/4 male thread
G 1/8 male thread
ø4.8mm ø0.189 in pipe

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Classification

(1) Classification by applicable fluid

Type Description
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.

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(2) Classification by type of pressure

Type Description
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.

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(3) Classification by pressure port

Type Appearance Description
Rc 1/8 female thread
  • Tapered female thread
  • Extremely air-tight for high pressure applications
  • Commonly used in Japan
M5 female thread
  • Straight female thread
  • Fairly air-tight for low pressure applications
  • Used for low pressure applications
10-32 UNF female thread
  • Straight female thread
  • Fairly air-tight for low pressure applications
  • Used for low pressure applications
  • Commonly used in North America
NPT 1/8 female thread
  • Tapered female thread
  • Extremely air-tight for high pressure applications
  • Commonly used in North America
NPTF 1/8 female thread
  • Tapered female thread
  • Extremely air-tight for high pressure applications
  • No sealing tape required
  • Commonly used in North America
G 1/8 female thread
  • Straight female thread
  • Fairly air-tight for low pressure applications, and easily connectable
  • Commonly used in Europe
R 1/8 male thread
R 1/4 male thread
  • Tapered male thread
  • Extremely air-tight for high pressure applications
  • Commonly used in Japan
M5 male thread
  • Straight male thread
  • Fairly air-tight for low pressure applications, and easily connectable
10-32 UNF male thread
  • Straight male thread
  • Fairly air-tight for low pressure applications, and easily connectable
  • Commonly used in North America
NPT 1/4 male thread
NPT 1/8 male thread
  • Tapered male thread
  • Extremely air-tight for high pressure applications
  • Commonly used in North America
G 1/8 male thread
  • Straight male thread
  • Fairly air-tight for low pressure applications, and easily connectable
  • Commonly used in Europe
ø4.8mm
ø0.189 in
pipe
  • Easy connection with a tube
  • Used for low pressure applications

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Related Products

Download

  • pressure_e.pdfDownload

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