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PCE
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DIFF Subgroup
G01K 7/20

in a specially-adapted circuit, e.g. bridge circuit

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat > using resistive elements > the element being a linear resistance, e.g. platinum resistance thermometer > in a specially-adapted circuit, e.g. bridge circuit

CPC:

Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat (giving results other than momentary value of temperature G01K3/00) > using resistive elements > the element being a linear resistance, e.g. platinum resistance thermometer (G01K7/26 takes precedence) > in a specially-adapted circuit, e.g. bridge circuit

CPC subdivides this area 3x more granularly than IPC with 2 additional codes.

2 codes are CPC-only extensions.

IPC defines codes here since 1995.

Child Classifications

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  • G01K 7/203 CPC only CPC only
  • G01K 7/206 CPC only CPC only
  • G01K 7/21 for modifying the output characteristic, e.g. linearising since 1995 IPC+CPC Available in IPC and CPC