Life Safety Distribution AG Patent applications |
Patent application number | Title | Published |
20150084767 | DETECTOR WITH INTEGRATED SENSOR PLATFORM - An integrated system platform includes a sensor containing an embedded microcontroller and associated circuitry for providing safety critical functionality. Signal conditioning circuitry is coupled to the sensor along with gas concentration determining circuitry, alarm status circuitry and fault status evaluation circuitry. Wherein the sensor is operational with a main control module and at least one alarm output device. | 03-26-2015 |
20140353156 | MICROELECTRODES FOR ELECTROCHEMICAL GAS DETECTORS - 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. | 12-04-2014 |
20140231253 | LEAD-FREE ELECTROCHEMICAL GALVANIC OXYGEN SENSOR - A lead-free, self-corrosion-free electrochemical galvanic oxygen sensor is provided. The preferred sensor includes a container, the container including a lead-free anode, an alkali electrolyte, a carbon platinized with platinum cathode and a nickel wire current collector, wherein the container further includes a diffusion barrier that causes the sensor to operate in the limiting current region. | 08-21-2014 |
20130087457 | AUXILIARY GAS DIFFUSION ELECTRODES FOR DIAGNOSTICS OF ELECTROCHEMICAL GAS SENSORS - 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. | 04-11-2013 |
20130087456 | AUXILIARY MICRO-ELECTRODES FOR DIAGNOSTICS OF ELECTROCHEMICAL GAS SENSORS - 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. | 04-11-2013 |
20120318037 | Compensated Gas Detectors - A compensated gas detector incorporates first and second pellistors combined with first and second resistors and an intervening switch. Control circuits can close the switch for normal gas detection. The switch can be opened to carry out diagnostic measurements. A compensation coefficient can be established in order to compensate outs from the pellistors due to mechanical damage thereto. | 12-20-2012 |
20120241319 | Gas Detector Having Bipolar Counter/Reference Electrode - A gas detector includes at least two electrodes. The electrodes are carried on a common substrate having first and second spaced apart surfaces. The electrodes are formed on respective ones of the surfaces with the substrate sandwiched therebetween. | 09-27-2012 |
20120228140 | Low Water Vapour Transfer Coating of Thermoplastic Moulded Oxygen Gas Sensors - A gas sensor is disclosed. The gas sensor includes a gas sensing electrode and a counter electrode disposed within a housing, and respective conductors that connects the gas sensing electrode and the counter electrode to a sensing circuit. The housing includes walls defining a cavity containing electrolyte in fluid communication with the gas sensing electrode and counter electrode and wherein the walls further comprise one or more coatings or second layers superimposed on the walls. The one or more coatings or second layers have a lower water vapor transport rate than that of the walls, such that, in use, water vapor transport between the electrolyte and atmosphere through the walls of the housing is reduced. | 09-13-2012 |
20120228139 | Vented Oxygen Cell - An electrochemical oxygen sensor is provided. The electrochemical sensor includes a housing having first and second compartments, a sensing electrode disposed within the first compartment of the housing, a consumable anode disposed within the second compartment of the housing, a porous separator between the sensing electrode and consumable electrode that separates the first and second compartments and an electrolyte saturating the porous separator and consumable anode. A first aperture on a first end of the housing extends between an outside surface of the housing and first compartment that allows gas access to the sensing electrode. A venting system on a second, opposing end of the housing includes a second aperture extending between the outside surface of the housing and second compartment and has a predetermined permeability that controls pressure in the second compartment and loss of moisture from the sensor. | 09-13-2012 |
20120193229 | Electrochemical Oxygen Sensor with Internal Barrier to Oxygen Diffusion - An electrochemical sensor includes a micro-porous plastic membrane supported on a disk and located between a gas inflow port and an electrolyte having a gelled oxygen diffusion barrier. The oxygen diffusion barrier, formed of gelled agar, minimizes thermal shock effects by impregnating any porous materials in the sensor. | 08-02-2012 |
20110303676 | SHEET METAL EXPLOSION-PROOF, AND FLAME-PROOF ENCLOSURES - An explosion retaining housing includes a sheet metal member or outer skin which at least in part forms an interior region of the housing. At least one structural element provides additional strength to the member to retain the explosion in the region. The structural element can be inside of, or, outside of the region. The structural element can have a plurality of components which cooperate together to resist the force of an explosion in the interior region. | 12-15-2011 |
20110302991 | THERMALLY INSULATING CERAMIC SUBSTRATES FOR GAS SENSORS - A gas sensor includes a substrate having a low thermal conductivity. Localized heating can be produced using a serpentined heater carried by the substrate. The low thermal conductivity of the substrate substantially confines the generated heat to a region local to the heater thereby reducing required power to operate the sensor. Multiple sensing elements can be deposited onto the substrate adjacent to respective heaters and relatively close together because of the thermal isolation provided by the substrate. In one embodiment, the sensor can include the ceramic substrate, the heater, catalytic material overlying the heater with a gas impermeable layer overlying, at least in part the catalytic material. | 12-15-2011 |
20110005927 | Electro-chemical Cell and Method of Providing Multiple Electrical Connections to a Lead Anode of an Electro-chemical Gas Sensing Cell - A lead wool electrode for an electro-chemical cell can be fused to a metallic collector to provide an electrical connection therebetween. Various methods of fusion such as thermal, electrical or chemical can be used. | 01-13-2011 |
20100288652 | APPARATUS AND METHOD OF REGENERATING 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. | 11-18-2010 |
20100212395 | Instrument Docking Station with Non-Destructive Sensor Analysis Capabilities - A docking station for use with gas sensors includes limited test and diagnostic circuitry directed to specific characteristics of selected detectors. Where a family of detectors is to be evaluated, a universal interface for that family can be included. A single port can be used for multiple different detectors irrespective of specific detector characteristics. | 08-26-2010 |
20100170795 | ELECTROCHEMICAL GAS SENSOR - An electrochemical gas sensor has a hollow housing with multi-layer walls. A first layer of the walls has a selected water vapour transport rate. A second layer of the walls has a lower water vapour transport rate than the selected rate. The housing can be formed by first and second moulding processes. | 07-08-2010 |
20090120794 | Gas Sensor - The present invention provides a unique solution to the problems of both steady-state and transient signals produced by a variety of interfering stimuli, including humidity, which relies upon the inclusion in a gas sensing electrode in an electrochemical gas sensor of a catalyst material, in addition to a first catalyst material reactive to the target gas, the additional, or second, catalyst material producing a response to an interfering stimulus which is of the opposite polarity to that generated by the first catalyst material. | 05-14-2009 |
20090057150 | ELECTROCHEMICAL GAS SENSOR - An electrochemical gas sensor is disclosed which comprises a gas sensing electrode and a counter electrode disposed within a housing, the housing having an aperture for gas ingress, the gas sensing electrode and counter electrode being separated by a region containing electrolyte, and means for connecting the gas sensing electrode and the counter electrode to a sensing circuit. An electrolyte-absorbing element is disposed inboard of the aperture, between the housing and the gas sensing electrode, in order to absorb electrolyte passing through the gas sensing electrode whilst maintaining a gas path through the electrolyte-absorbing element. | 03-05-2009 |