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7485861 |
System and method for remote emissions sensing including calculation and calibration techniques compensating for temperature and pressure effects
A remote emissions sensing (RES) system and method for measuring the exhaust gas composition of a motor vehicle is provided, including calibration methodologies for compensating for the effects of...
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7459699 |
Method of determining processing position in charged particle beam apparatus, and infrared microscope used in the method
A laser mark which will be the positioning mark for a secondary charged particle image in the charged particle beam apparatus is applied by moving the sample processing/observation area in the...
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7435964 |
Thermal sensor with increased sensitivity
The invention provides a thermal sensor having a first and second temperature sensing elements each being formed on a thermally isolated table in a first substrate.
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7084010 |
Integrated package design and method for a radiation sensing device
A radiation detector ( 10 ) has a base ( 30 ), a frame ( 48 ), a window ( 46 ), and solder layers ( 50, 52 ) formed from a solder pre-form ( 58, 60 ) to define a vacuum chamber ( 56 ). Feedthroughs...
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6399026 |
Sample holder apparatus
A sample holder apparatus for a top-loading cryostat insert based on a cage assembly system which is mounted onto a vacuum flange. The vacuum flange has a group of blind bores on the vacuum side of...
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6359278 |
Optical stabilization of temperature effects on an infrared gas analyzer
A method of stabilizing temperature effects on a gas analyzer includes transmitting infrared energy through a plurality of cells in a reference cell drum to a sensor in the gas analyzer. The...
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6123288 |
Apparatus and method for flickerless projection of infrared scenes
A non-volatile electron beam-addressed light-valve produces a flickerless, all-at-once visible light output which is then converted into a flickerless projected infrared scene suitable for testing...
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5815410 |
Ratio type infrared thermometer
An improved ratio type infrared thermometer utilizes integrating amplifiers for each waveband having the integration time automatically set so that the output voltage utilizes the full range of an...
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5572031 |
Pressure- and temperature-compensating oxygen sensor
RF modulation spectroscopy of a near-infrared tunable laser diode source is used to determine the oxygen concentration in a sample medium. A reference cell containing a known concentration of...
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5512757 |
Spectrophotometer and optical system therefor
The photometer of the present invention includes an optical system in which an emission beam generated by pulsed ultra violet radiation from a source is split into a sample beam and a reference...
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5317156 |
Diagnostic tests using near-infrared laser absorption spectroscopy
RF modulation spectroscopy of a near infrared laser diode source is used to determine the amount of a target substance in a breath sample. In this type of modulation the laser output is modulated...
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5126570 |
Sensor and method for measuring alcohol concentration in an alcohol-gasoline mixture
A sensor and method for measuring the concentration of alcohol in an alcohol-hydrocarbon mixture for use with flexible fuel vehicles. The sensor and method are characterized by a pair of detectors...
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5105085 |
Fluid analysis system
A system for analyzing fluids. In one embodiment, the system measures the water content in an oil/water emulsion. A fluid probe comprising an infrared light emitting diode and a phototransistor...
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5017018 |
Clinical thermometer
A clinical thermometer which employs an infrared sensor and is constructed so as to prevent the occurrence of a temperature measurement error caused by a change in temperature of a tip portion (of...
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4950900 |
Heated infrared gas analyzer using a pyroelectric infrared sensor
An infrared gas analyzer using a pyroelectric infrared sensor, which includes a heating unit for heating the infrared sensor, a heating sensor for detecting its heating temperature and a...
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4914720 |
Gas analyzers
Gas analyzers of the non-dispersive infrared radiation type which are designed to measure the concentration of one gas in a mixture of gases containing that gas. An infrared radiation emitter is...
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4882492 |
Non-invasive near infrared measurement of blood analyte concentrations
A non-invasive apparatus and related method for measuring the concentration of glucose or other blood analytes utilizes both diffuse reflected and transmissive infrared absorption measurements and...
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4829183 |
Dual sample cell gas analyzer
A non-dispersive infrared gas analyzer is disclosed that accurately measures the concentration levels of a plurality of gases within a gas mixture. The analyzer includes first and second sample...
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4435093 |
Pyrometer with sighting window cleanliness monitor
Coke guide and coke oven infrared pyrometer degrading is minimized to continuously permit better accuracy and reliability in hostile environment of coke mass and heat, dust and/or dirt present in...
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4157470 |
Infrared gas analyzer
To detect the density of a measurement component of a sample gas, infrared light is directed alternately through a measuring-light optical system and a reference-light optical system to a heated...
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4153837 |
Optical gas analyzer
An optical gas-concentration analyzer which utilizes the infrared absorption principle has a sample chamber and reference chamber with infrared source and detector assemblies spaced at opposite...
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4048499 |
Infrared absorption spectroscopy of liquids employing a thermal detector
In an infrared laser absorption spectrometer, an infrared laser beam of predetermined wavelength, in the infrared absorption spectrum, is beamed into a liquid sample under analysis. Components of...
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4020345 |
Detector for an infrared analyzer
A detector for an IR analyzer is disclosed, wherein the blank sample (that is, a quantity of the compound which is searched in a liquid or gaseous sample in which the component is searched for) is...
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3970387 |
Nondispersion, two beam, infrared gas analyzer
The two beam analyzer has chambers traversed by infrared beams and passed through by test gas; the intensity of each beam is detected by a detector having chambers which are filled with gas of the...
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3958122 |
Exhaust gas analyzer having pressure and temperature compensation
The contaminants in the exhaust gas emissions from a motor vehicle such as carbon monoxide (CO) and hydrocarbons (HC) are analyzed and the concentration of the contaminants together with other...
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3937962 |
Correction of two beam photometer for fluid analysis
A two infrared beam gas analyzer, with sample and reference paths and radiation chopper has two absorption cells as detectors wherein the pressures are compared in a first diaphragm capacitor and...
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3770974 |
NON-DISPERSIVE INFRARED FLUID ANALYZER WITH COMPENSATION FOR ABSORPTIVE AND MECHANICAL EFFECTS OF AMBIENT CONDITIONS
Alternately chopped analytic and reference beams of infrared energy are passed through sample and reference fluids, respectively, and then sequentially through a first detector, a filter, and a...
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3735127 |
INFRARED TWO GAS ANALYZER
A radiation absorption analyzer is disclosed for the measurement of two gases in a gas sample being analyzed utilizing the same equipment, and for simultaneous measurement of the two gases with...
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3731092 |
NON-DISPERSIVE INFRARED GAS ANALYZER HAVING SAMPLE AND REFERENCE BEAMS USING FLOW SENSITIVE DETECTOR AND WITH UNBALANCED OPERATION
Separate pulsed sample and reference beams of infrared energy are passed, respectively, through sample and reference gases to separate chambers in a detector unit for measuring the absorption of...
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3568010 |
THIN FILM CAPACITIVE BOLOMETER AND TEMPERATURE SENSOR
An improved capacitive element which exhibits a useful change of capacitance with temperature is provided by increasing the effective space-charge barrier by evaporating thinner layers of an...
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3529152 |
INFRARED RADIATION DETECTION DEVICE FOR A NON-DISPERSIVE SELECTIVE INFRARED GAS ANALYSIS SYSTEM
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3107517 |
Natural gas leak detection
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3059111 |
Measuring apparatus
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3005097 |
Method and apparatus for the analysis by radiation of mixtures of substances
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2999158 |
Gas analysis based upon absorption of infrared rays
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2995660 |
Detector
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2977842 |
Measuring method and apparatus
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2939953 |
Analyzer
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2908820 |
Analyzer and sampling system
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2908818 |
Analyzer and control method
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2863060 |
Composition analyzer utilizing radiation
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2849617 |
Water detection in sulphur dioxide by an infra-red analyzer
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2810835 |
Composition analyzer utilizing radiation
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2806144 |
Infrared analyzer
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2794924 |
Method and apparatus for determining a component in a gaseous mixture
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