Patent application number | Description | Published |
20090218220 | Amperometric Electrochemical Cells and Sensors - Amperometric ceramic electrochemical cells comprise, in one embodiment, an electrolyte layer, a sensing electrode layer, and a counter electrode layer, wherein the cell is operable in an oxidizing atmosphere and under an applied bias to exhibit enhanced reduction of oxygen molecules at the sensing electrode in the presence of one or more target gases such as nitrogen oxides (NO | 09-03-2009 |
20120055789 | AMPEROMETRIC ELECTROCHEMICAL CELLS AND SENSORS - Amperometric ceramic electrochemical cells comprise, in one embodiment, an electrolyte layer, a sensing electrode layer comprising a ceramic phase and a metallic phase, and a counter electrode layer, wherein the cell is operable in an oxidizing atmosphere and under an applied bias to exhibit enhanced reduction of oxygen molecules at the sensing electrode in the presence of one or more target gases such as nitrogen oxides (NO | 03-08-2012 |
20130233728 | AMPEROMETRIC ELECTROCHEMICAL SENSORS, SENSOR SYSTEMS AND DETECTION METHODS - An amperometric electrochemical sensor configured to be operable in an oxidizing atmosphere and under an applied bias to exhibit enhanced reduction of oxygen molecules at the sensing electrode in the presence of one or more target gas species and a resulting measurable increase in oxygen ion flux through the cell. The sensor has an electrolyte membrane, a sensing electrode on the electrolyte membrane, and a counter electrode on the electrolyte membrane, wherein the sensing electrode includes at least one molybdate or tungstate compound. An electrochemical sensor system is also provided, along with a method of detecting the concentration of one or more of NOx and NH | 09-12-2013 |
Patent application number | Description | Published |
20100258734 | NEUTRON SENSITIVITY USING DETECTOR ARRAYS - A neutron detector includes an anode and a cathode. The cathode circumscribes the anode and has a plurality of planar segments facing the anode. In one embodiment, the neutron detector is part of an array of neutron detectors. | 10-14-2010 |
20100258736 | NEUTRON SENSITIVITY BY INCREASING BORON SURFACE AREA - A neutron detector including an anode and a cathode. The cathode extends proximate the anode and has a face including boron. The face has varied topography. The varied provides increased surface density. | 10-14-2010 |
20100258737 | HIGH SENSITIVITY B-10 NEUTRON DETECTORS USING HIGH SURFACE AREA INSERTS - A neutron detector that includes an anode and a cathode. The cathode includes at least one portion that has a porous substrate with surface segments that define open pores and a layer of neutron sensitive material on the surface segments of the porous substrate. | 10-14-2010 |
20110068274 | USING UV LIGHT SOURCE FOR SELF TESTING GAS FILLED GAMMA AND NEUTRON DETECTORS - An apparatus for detecting at least one of neutron and gamma ray reception and outputting a signal indicative of the reception. A detector is responsive to the at least one of neutron and gamma ray reception. The detector has a cathode, an anode separated by a space from the cathode, and a gas within the separating space. Charge is generated within the gas upon the at least one of neutron and gamma ray reception at the cathode and the charge passes to the anode as a detection. A processing arrangement is operatively connected to the anode for outputting the signal indicative of the detection. A light irradiation arrangement for introducing a light irradiation causes charge within the gas that replicates the charge generated upon detection and that causes output of a signal that replicates the signal indicative of the detection. | 03-24-2011 |
20110068275 | NEUTRON SENSITIVITY USING DETECTOR ARRAYS - A detector array includes a plurality of neutron detectors. Each neutron detector includes an anode and a cathode including at least some B-10 boron. The array includes at least one gamma detector engaged against at least one neutron detector within the array. A detector array includes a plurality of detectors engaged against each other. The plurality of detectors includes at least one neutron detector and at least one gamma detector. In one specific example, the at least one neutron detector contains B-10. An associated method adjusts information concerning a value of neutron detection. | 03-24-2011 |
20130256550 | SELF-HEATING ELECTROMETER FOR HIGH PRESSURE ION CHAMBER FOR VERIFICATION OF TEMPERATURE COMPENSATION - An apparatus and method for verifying the temperature compensation correction factor accuracy of an electrometer is provided. The electrometer includes an electrical amplifier to convert a current signal to a voltage signal. The electrometer also includes a compensation circuit to modify the voltage signal for temperature compensation. The electrometer further includes a heat producing device to induce a temperature change of the electrical amplifier and the compensation circuit. An environmental radiation monitor is also provided. The environmental radiation monitor includes a power supply, a high pressure ionization chamber, and the electrometer. The method includes providing an environmental radiation monitor, measuring the voltage signal at a first time, activating a heat producing device, measuring the voltage signal at a second time, and comparing the two measured values of the voltage signal. | 10-03-2013 |
20140125349 | ELECTROMETER CURRENT INJECTION BY HIGH VOLTAGE RAMP - An apparatus and method for conducting a test cycle for an electrometer of an environmental radiation monitor by current injection is provided. The environmental radiation monitor includes a high pressure ionization chamber, a power supply electrically connected to the high pressure ionization chamber, and an electrometer electrically connected to the high pressure ionization chamber. A controller controls the power supply voltage signal provided to the high pressure ionization chamber to create a constant current to be injected into the electrometer. The methods include varying the voltage signal provided to the high pressure ionization chamber, measuring a current signal, processing the current signal with the electrometer and comparing the voltage signal to an expected result, indicating proper operation of the electrometer. Further examples of the method include initiating and discontinuing a test function. | 05-08-2014 |
20140217300 | DYNAMIC HIGH VOLTAGE BIAS FOR HIGH PRESSURE ION CHAMBERS - An environmental radiation monitor including a high pressure ionization chamber (HPIC) configured to produce a current signal responsive to gamma impingement. The monitor includes an electrometer electrically connected with the HPIC. The electrometer includes an electrical amplifier receiving the current signal. The electrical amplifier is configured to convert the current signal to a voltage signal indicative of gamma impingement. The monitor includes a voltage supply electrically connected to the HPIC to provide a bias voltage amount to the high pressure ionization chamber. The voltage supply is controllable to vary the bias voltage amount provided to the HPIC. The monitor includes a processor operatively connected to the electrometer to receive information indicative of gamma impingement and operatively connected to the voltage supply to control the voltage supply to vary the bias voltage amount in response to received information indicative of gamma impingement. An associated method is also provided. | 08-07-2014 |