Fluid analyzer
US11378555B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2019 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Aug 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/3084
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid analyzer having an electrical heater includes an intrinsic safety barrier that provides voltage and current from a power source to an electrical load and includes a voltage limiter and an infallible current limiting resistor for limiting the voltage and current provided to respective intrinsically safe levels, where the voltage limiter is arranged in a flameproof/explosion proof or pressurized/purged enclosure, and the current limiting resistor, e.g., an electrical heater, is connected via a connecting line to the voltage limiter and arranged outside the flameproof/explosion proof or pressurized/purged enclosure in an enclosure configured to provide protection against contact and ingress without being flameproof/explosion proof or pressurized/purged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.