公开(公告)号：WO2014186351A1

公开(公告)日：2014-11-20

申请号：PCT/US2014/037822

申请日：2014-05-13

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： NEMER, Joseph, C. ,  STOJKOV, Mark, D.

IPC: F23N5/00 ,  F23N5/26

CPC classification number: G01N33/0009 ,  G01N27/4067

Abstract: An in situ oxygen analyzer (10) having an intrinsically-safe output (68) and a heated probe (12) is provided. The probe is extendable into a source of process gas and has an oxygen sensor (34) and heater (38) disposed therein. The heater (38) is configured to heat the oxygen sensor (34) to a temperature sufficient to operate the oxygen sensor (34). A housing is coupled to the probe and has first (36) and second chambers (64). The first chamber (36) is explosion-rated and includes non-intrinsically safe circuitry (50) coupled to the heater (38) to energize the heater (38). The second chamber (64) contains only intrinsically-safe circuitry (72) that complies with an intrinsically-safe specification. The first and second chambers (36, 64) are isolated from one another. The non-intrinsically-safe circuitry (50) is coupled to the intrinsically-safe circuitry (60) through an energy-limiting isolator (70).

Abstract translation: 提供具有本质安全输出（68）和加热探头（12）的原位氧分析仪（10）。 探针可延伸到处理气体源中，并且具有设置在其中的氧传感器（34）和加热器（38）。 加热器（38）构造成将氧传感器（34）加热至足以操作氧传感器（34）的温度。 壳体联接到探头并具有第一（36）和第二腔室（64）。 第一室（36）是爆炸级的，并且包括联接到加热器（38）以激励加热器（38）的非本质安全电路（50）。 第二室（64）仅包含符合本质安全规范的本质安全电路（72）。 第一和第二腔室（36,64）彼此隔离。 非本质安全电路（50）通过能量限制隔离器（70）耦合到本质安全电路（60）。

公开(公告)号：EP2997308A1

公开(公告)日：2016-03-23

申请号：EP14797118.8

申请日：2014-05-13

Applicant: Rosemount Analytical Inc.

Inventor： NEMER, Joseph, C. ,  STOJKOV, Mark, D.

IPC: F23N5/00 ,  F23N5/26

CPC classification number: G01N33/0009 ,  G01N27/4067

Abstract: An in situ oxygen analyzer (10) having an intrinsically-safe output (68) and a heated probe (12) is provided. The probe is extendable into a source of process gas and has an oxygen sensor (34) and heater (38) disposed therein. The heater (38) is configured to heat the oxygen sensor (34) to a temperature sufficient to operate the oxygen sensor (34). A housing is coupled to the probe and has first (36) and second chambers (64). The first chamber (36) is explosion-rated and includes non-intrinsically safe circuitry (50) coupled to the heater (38) to energize the heater (38). The second chamber (64) contains only intrinsically-safe circuitry (72) that complies with an intrinsically-safe specification. The first and second chambers (36, 64) are isolated from one another. The non-intrinsically-safe circuitry (50) is coupled to the intrinsically-safe circuitry (60) through an energy-limiting isolator (70).