Honeywell International Inc.

Life Safety Distribution Ag

City Technology Limited

Honeywell Analytics Limited

Life Safety Distribution Gmbh

Honeywell Analytics Ag

John Chapples

Martin Geoffrey Jones

Keith Francis Edwin Pratt

Neils Richard Stewart Hansen

Lei Xiao

Martin Jonathan Kelly

Paul Christopher Westmarland

Richard Gorny

John A Tiwet

Martin Williamson

Ian Robins

Cary S Stone

John Anthony Tillotson

Ian McLeod

Martin John Willett

Stefan Dan Costea

Mihai Gologanu

Stuart Alistair Harris

Anthony Charles Downer

Terence Nicholas Moran

Peter J Sewell

Martin Legg

Neils Hansen

Arkadiusz Edward Majczak

Richard Alan Sellis

Alan Daniel Spong

Steven Leslie Scorfield

Andrew Peter Millar

Richard A Gorny

Neils R S Zellweger Analytics Ltd Hansen

Peter John Sewell

Martin Kelly

Stefan Costea

Martin Jones

Ian Robbins

Various embodiments are directed to an improved electrochemical cell system that is configured to reduce the concentration of a target gas in a cold storage environment. The electrochemical cell system may comprise an electrochemical cell apparatus, an air circulation apparatus, and a flow hood. The electrochemical cell apparatus may be combined with or coupled to an air circulation apparatus via the flow hood to maximize access of the target gas to the gas aperture.

Apparatus and method for removal of a target gas from a cold storage environment

A gas sensor includes know types of electrodes such has sensing electrodes, counter electrodes or reference electrodes to sense the presence of a predetermined gas. In addition, at least one diagnostic electrode is carried in the sensor. The diagnostic electrode implements at least one diagnostic function without substantially impairing the gas sensing function. The diagnostic electrode is immersed in sensor electrolyte.

Auxiliary micro-electrodes for diagnostics of electrochemical gas sensors

Embodiments of the disclosure relate to capillary controlled gas sensors comprising a top cap assembly, wherein the top cap assembly is operable to reduce the effects of condensation and pressure changes on the effectiveness of the gas sensor. The top cap assembly comprises a capillary controlled gas flow path, a bulk flow control assembly, and a raised boss surrounded by a moat.

Gas sensors with structure to resist signal losses due to condensation

A gas sensor including a housing containing a potassium permanganate element sandwiched between two polytetrafluoroethylene elements, a carbon element, a polytetrafluoroethylene element located adjacent to the carbon element, a sensing electrode, a reference electrode, and a counter electrode with attached current collectors, and an electrolyte.

Gas sensor with partitioned filter

A gas sensor including a gas sensing electrode, a counter electrode disposed within a housing, and respective conductors that connect the gas sensing electrode to the counter electrode via a sensing circuit is disclosed. The housing includes a solid electrolyte in communication with the gas sensing electrode and counter electrode wherein the solid electrolyte further comprises one or more coatings or layers. The one or more coatings or layers have a lower water vapor transport rate than that of the electrolyte, such that, in use, water vapor transport between the electrolyte and atmosphere is reduced.

Gas sensor with solid electrolyte having water vapor diffusion barrier coating

An electrochemical gas sensor having an electrode with a catalyst distributed on a porous surface is described. The porous surface can be a polytetrafluoroethylene tape. Alternate embodiments include layered or stacked electrodes.

Microelectrodes for electrochemical gas detectors

A sensor with a sensor housing or body, a plastic molded table positioned in the sensor housing; and a counter electrode carried on a first end of the table.

Support for electrode stack and provision for venting of a gas sensor using an internally mounted table

A gas sensor having a housing with first and second chambers featuring a porous separator located there between. The first chamber of the sensor being connected to atmosphere via a gas diffusion aperture. The gas sensor having a sensing electrode disposed within the first chamber and at least a second electrode disposed within the second chamber. The sensor having an ionic liquid electrolyte disposed within the second chamber where the sensing electrode and at least second electrodes comprise platinum.

Gas sensor using an ionic liquid electrolyte

A gas sensor includes known types of electrodes such as sensing electrodes, counter electrodes or reference electrodes to sense the presence of a predetermined gas. In addition, at least one diagnostic electrode is carried in the sensor. The diagnostic electrode implements at least one diagnostic function without substantially impairing the gas sensing function. The diagnostic electrode is immersed in sensor electrolyte.

An electrochemical detector includes a carbon based element located between a separator and a current collector of an adjacent electrode. Elements can take the form of a carbon fabric located between the separator and the collector, or a linear, or, circular carbon deposit on a surface of the separator adjacent to the respective current collector. Other conductive coatings including gold, platinum or transition metals, as well as carbon, can be deposited directly onto a porous substrate, such as a masked separator material.

Electrochemical gas detector with carbon element

An electrochemical gas sensor includes additional gas diffusion electrodes incorporated to carry out one or more diagnostic functions while the sensor is responding to a target gas. Members of a plurality of sensing and diagnostic electrodes can be switched by associated control circuits to intermittently sense a target gas while others intermittently sense a different gas. The diagnostic electrodes are in direct communication with the target gas that is entering the cell.

Auxiliary gas diffusion electrodes for diagnostics of electrochemical gas sensors

A method of improving performance of electrochemical gas sensors includes cycling potentials applied to one or more of the electrodes of the respective sensor(s) to improve performance of a different electrode. In a process for treating a reference electrode, potentials can be applied to working and, or counter electrodes so as to modify the environment in the vicinity of the reference electrode. An apparatus can carry out the method automatically.

Apparatus and method of regenerating electrochemical gas sensors

An electrochemical oxygen sensor includes a micro-porous plastic membrane supported on a sealing disk and located between a gas inflow port and the sensor's electrolyte. The membrane and disk minimize thermal shock effects due to using the sensor at a first location, at a first temperature, and then moving it to a second location at a different temperature.

Oxygen sensors

Devices and methods are disclosed that can adjust a hydration level in an electrochemical sensor or an instrument which includes such a sensor. The device can include a chamber which can, at least in part, surround an inflow port of the sensor. An adjacent reservoir of water can provide a source of water vapor which can be infused into the sensor.

Humidity control apparatus for electrochemical sensors

A method of operating an electrochemical gas sensor includes: An apparatus for operating an electrochemical gas sensor, adapted for connection to an electrochemical gas sensor via a sensing circuit for control thereof, can carry out the disclosed method(s).

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Portsmouth, United Kingdom

John Chapples