公开(公告)号：US20240380198A1

公开(公告)日：2024-11-14

申请号：US18554700

申请日：2021-08-04

Applicant: ABB Schweiz AG

Inventor： Wilfred Fernando Baluja ,  Chang Liu

IPC: H02H11/00 ,  G01F23/22 ,  H02H9/02

Abstract: An intrinsically safe circuit includes energy input ports and energy output ports, and a first power line and a second power line connected in parallel between the energy input ports and energy output ports. The power lines are configured to deliver energy from the energy input ports to the energy output ports. The circuit can also include signal input ports and signal output ports, and a first signal line and a second signal line connected in parallel between the signal input ports and signal output ports. The signal lines are configured to deliver signals between the signal input ports and signal output ports. The circuit can also include a voltage clamping unit connected between the first power line, the second power line, the first signal line, and the second signal line. The circuit can also include a current limiting unit.

公开(公告)号：US20240175741A1

公开(公告)日：2024-05-30

申请号：US17792324

申请日：2021-08-04

Applicant: ABB Schweiz AG

Inventor： Wilfredo Fernando Baluja ,  Chang Liu ,  Yasong Yu ,  Andrzej Jaroslawski ,  Wouter Frans Aerts

IPC: G01F23/62 ,  F16L5/10 ,  H02H9/02

CPC classification number: G01F23/62 ,  F16L5/10 ,  H02H9/02

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.