Heffels
Camiel Heffels, Stutensee-Buchig DE
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20100134784 | Detector Arrangement for a Nondispersive Infrared Gas Analyzer and Method for the Detection of a Measuring Gas Component in a Gas Mixture by Means of Such a Gas Analyzer - A detector arrangement for detection of a measuring gas component in a gas mixture is provided. The arrangement includes a gas analyzer, a first single-layer receiver and a further single-layer receiver, the first single-layer receiver containing the measuring gas component and the further single-layer receiver containing a transverse gas. A concentration of the measuring gas component in the gas mixture is determined from signals delivered by sensors of the single-layer receivers. An evaluating device includes an n-dimensional calibration matrix for obtaining matrix signal values. Signal values of different known concentrations of the measuring gas component in the presence of different known transverse gas concentrations are stored as n-tubules in the evaluating device. The concentration of the measuring gas component in the presence of unknown transverse gas concentrations is determined by comparing n-tuples of signal values thereby obtained with the n-tuples of signal values stored in the calibration matrix. | 06-03-2010 |
20110032514 | Non-Dispersive Infrared Gas Analyzer - The invention relates to a NDIR-gas analyser comprising an infrared radiation source ( | 02-10-2011 |
20120056112 | Infrared Radiator Arrangement for a Gas Analysis Device - A method and device for measuring the soot load in the exhaust gas systems of diesel engines using a sensor which is mounted downstream of a particulate filter and comprises a sensor element, to measure the operability of the particulate filter. According to the method, the soot load of the sensor element is measured resistively or capacitively using electrodes. The measuring voltage of the sensor element is controlled depending on at least one actual operating parameter of the diesel engine. | 03-08-2012 |
20120091346 | NDIR-two Beam Gas Analyser And Method For Determining The Concentration Of A Measuring Gas Component in a Gas Mixture by means of Said type of Gas Analyser - The invention relates to a NDIR two beam gas analyser in which infrared radiation is guided by modulation in an alternating manner through a measuring chamber and a reference chamber and is subsequently detected, a measurement signal being produced due to the analysis which determines the concentration of a measurement gas component present in the measurement chamber. The detection and compensation of error effects, in particular modifications on the infrared radiation source or detector arrangement, is simplified as a phase imbalance is produced in the switching of the radiation between the chambers, and the measurement signal is detected in a phase-sensitive manner for modulating the radiation, a measurement signal vector (SF) comprising amplitude information and phase information (Φ | 04-19-2012 |
20120203470 | Measurement Method - A measurement method in which, at the start of a measurement chain, a measured variable is picked up and is further-processed over the course of the measurement chain by conversion to generate a measurement result, where the original or converted measured variable is modulated at a predetermined modulation frequency at a first point in the measurement chain. At a second point in the measurement chain or sequence, which is after the first point in the direction of further-processing, a variable is added to the converted measured variable. The measurement chain or sequence is calibrated using different known values for the measured variable, where different vectors are obtained that define a characteristic, and an unknown value for the measured variable is determined from that point of the characteristic at which the vector obtained in the process or its extension intersects the characteristic. | 08-09-2012 |
20130208280 | Non-Dispersive Gas Analyzer - A non-dispersive gas analyzer comprising a light source, having light that shines through a measuring cuvette containing a measuring gas to be analyzed onto a non selective detector having a downstream evaluation unit, wherein a multi-component gas analysis is made possible using in a simple manner in that the light source is a flash discharge lamp and the evaluation unit is configured to evaluate the temporal pulse curves of the flash shining onto the detector such that it is possible to take advantage of the property of flash discharge lamps in that the emitted wavelength components vary over the duration of the flash. | 08-15-2013 |
Camiel Heffels, Stutensee DE
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20080247906 | Luminescence Sensor for Determining and/or Monitoring an Analyte that is Contained in a Fluidic Process Medium - A device for determining and/or monitoring an analyte contained in a fluidic process medium. The device comprises a sensor, which contains a process membrane with a porous support structure, a luminescent substance, that comes into contact with the analyte or gaseous process medium, being embedded in said support structure, an emitter unit, whose radiation excites the luminescent substance, causing it to emit luminescent radiation, a receiver unit, which detects the luminescent radiation and a control/evaluation unit, which determines the concentration or the partial pressure or pressure of the analyte using the quenching of the luminescent radiation of the luminescent substance. According to the invention, the porous support structure comprises plastic, ceramic, metal or foamed plastic. | 10-09-2008 |
Camiel Heffels, Stutensee-Büchig DE
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20100134784 | Detector Arrangement for a Nondispersive Infrared Gas Analyzer and Method for the Detection of a Measuring Gas Component in a Gas Mixture by Means of Such a Gas Analyzer - A detector arrangement for detection of a measuring gas component in a gas mixture is provided. The arrangement includes a gas analyzer, a first single-layer receiver and a further single-layer receiver, the first single-layer receiver containing the measuring gas component and the further single-layer receiver containing a transverse gas. A concentration of the measuring gas component in the gas mixture is determined from signals delivered by sensors of the single-layer receivers. An evaluating device includes an n-dimensional calibration matrix for obtaining matrix signal values. Signal values of different known concentrations of the measuring gas component in the presence of different known transverse gas concentrations are stored as n-tubules in the evaluating device. The concentration of the measuring gas component in the presence of unknown transverse gas concentrations is determined by comparing n-tuples of signal values thereby obtained with the n-tuples of signal values stored in the calibration matrix. | 06-03-2010 |
20130208280 | Non-Dispersive Gas Analyzer - A non-dispersive gas analyzer comprising a light source, having light that shines through a measuring cuvette containing a measuring gas to be analyzed onto a non selective detector having a downstream evaluation unit, wherein a multi-component gas analysis is made possible using in a simple manner in that the light source is a flash discharge lamp and the evaluation unit is configured to evaluate the temporal pulse curves of the flash shining onto the detector such that it is possible to take advantage of the property of flash discharge lamps in that the emitted wavelength components vary over the duration of the flash. | 08-15-2013 |
Camiel Heffels, Stutensee-Buechig DE
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20130043391 | Non-Dispersive Infrared (NDIR) Dual Trace Gas Analyzer and Method for Determining a Concentration of a Measurement Gas Component in a Gas Mixture by the Gas Analyzer - A modulator wheel of a gas analyzer which contains an opening in the shadowing part thereof, where the opening generates in the measurement signal of the gas analyzer, in addition to a signal component at a modulation frequency generated by alternating shadowing and passing-through of the radiation, a further signal component having twice the modulation frequency that is used for detecting changes to the infrared radiation source or detector arrangement due to contamination, aging, or temperature, and compensating for the effects thereof on the measurement result. | 02-21-2013 |
Stephan Heffels, Münster DE
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20110100824 | CATHODIC ELECTRODEPOSITION PAINT CONTAINING A VINYLPYRROLIDONE COPOLYMER - The invention relates to an aqueous coating composition containing (A) at least one organic binder that can be dispersed in water and contains cationic groups, and (B) 0.05-10 wt. %, in relation to the solid body content of the aqueous coating composition, of a water-dilutable vinylpyrrolidone copolymer. Said vinylpyrrolidone copolymer (B) contains vinylpyrrolidone monomer units and vinylacetate monomer units in a molar ratio of 0.3:0.7-0.7:0.3, preferably 0.4:0.6-0.6:0.4 and has an average molecular weight of less than 200.000 g/mol. | 05-05-2011 |
Stephan Heffels, Münster DE
Patent application number | Description | Published |
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20110100824 | CATHODIC ELECTRODEPOSITION PAINT CONTAINING A VINYLPYRROLIDONE COPOLYMER - The invention relates to an aqueous coating composition containing (A) at least one organic binder that can be dispersed in water and contains cationic groups, and (B) 0.05-10 wt. %, in relation to the solid body content of the aqueous coating composition, of a water-dilutable vinylpyrrolidone copolymer. Said vinylpyrrolidone copolymer (B) contains vinylpyrrolidone monomer units and vinylacetate monomer units in a molar ratio of 0.3:0.7-0.7:0.3, preferably 0.4:0.6-0.6:0.4 and has an average molecular weight of less than 200.000 g/mol. | 05-05-2011 |