Thermocouple-to-extension wire ambient temperature error correction device
US6158885A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1998 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Jun 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a device for correcting error in temperature readings caused by thermocouple-to-extension wire ambient temperature fluctuations. The device creates an isothermal mass which raises the temperature of terminals to higher than ambient temperature. The isothermal mass consists of a self heating thermistor surrounded by thermal conductive epoxy inside an isothermal mass which contains the terminals. The isothermal mass is enclosed within insulating discs using a closure casing to complete the assembly. Using these higher than ambient temperature terminals for the connection between a thermocouple and extension wires, any error due to ambient temperature fluctuations is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.