Assemblies, circuits, and methods of transmitters between different equipment protection levels in a hazardous environment

US12345560B2 · kind B2 · utility

Assignee

• ABB Schweiz AG · CH

Inventors

• Wilfredo Fernando Baluja · Shanghai, CN
• Chang-Shin Liu · Shanghai, CN
• Yasong Yu · Shanghai, CN
• Andrzej Jaroslawski · Raleigh, US
• Wouter Aerts · Heverlee, BE

Key dates

• Filing date: Aug 4, 2021
• Grant date: Jul 1, 2025
• Expiry date: Aug 4, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02H9/02
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The disclosure relates to a transmitter assembly for a hazardous environment. The transmitter assembly includes a transmitter that includes a transmitting unit and a probe. The transmitting unit is configured to be positioned in a first area and includes an intrinsically safe circuit. The probe is configured to be positioned in a second area that is more hazardous and has a higher equipment protection level than the first area. The probe is electrically connected directly or indirectly to the intrinsically safe circuit. The transmitter assembly also includes a separation assembly positioned between the transmitting unit and the probe and including a hermetic seal configured to be electrically connected to the transmitting unit and the probe and a nut defining a tunnel sized to receive the hermetic seal therein. The exterior threads of the nut are complementary to threads on a partition wall positioned between the transmitting unit and the probe.