公开(公告)号：US09518968B2

公开(公告)日：2016-12-13

申请号：US14275152

申请日：2014-05-12

Applicant: Rosemount Analytical Inc.

Inventor： Joseph C. Nemer ,  Mark D. Stojkov

IPC: G01N7/00 ,  G01N33/00 ,  G01N27/406

CPC classification number: G01N33/0009 ,  G01N27/4067

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

Abstract translation: 本发明提供具有本质安全输出和加热探针的原位氧分析仪。 探针可延伸到处理气体源中，并且其中设置有氧传感器和加热器。 加热器被配置为将氧传感器加热到足以操作氧传感器的温度。 壳体耦合到探头并具有第一和第二腔室。 第一个室是爆炸级的，并且包括耦合到加热器的非本质安全电路以激励加热器。 第二个室仅包含符合本质安全规格的本质安全电路。 第一和第二腔室彼此隔离。 非本质安全电路通过能量限制隔离器耦合到本质安全电路。

公开(公告)号：US20140338422A1

公开(公告)日：2014-11-20

申请号：US14275152

申请日：2014-05-12

Applicant: Rosemount Analytical Inc.

Inventor： Joseph C. Nemer ,  Mark D. Stojkov

IPC: G01N33/00

CPC classification number: G01N33/0009 ,  G01N27/4067

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

Abstract translation: 本发明提供具有本质安全输出和加热探针的原位氧分析仪。 探针可延伸到处理气体源中，并且其中设置有氧传感器和加热器。 加热器被配置为将氧传感器加热到足以操作氧传感器的温度。 壳体耦合到探头并具有第一和第二腔室。 第一个室是爆炸级的，并且包括耦合到加热器的非本质安全电路以激励加热器。 第二个室仅包含符合本质安全规格的本质安全电路。 第一和第二腔室彼此隔离。 非本质安全电路通过能量限制隔离器耦合到本质安全电路。