Patents
Patents for G05D 21 - Control of chemical or physico-chemical variables, e.g. ph-value (1,435)
08/2009
08/18/2009US7575732 removing hydrogen sulfide from a hydrocarbon gas, with a scrub solution of ammonium bisulfite and ammonium sulfite to produce an effluent liquid ammonium thiosulfate and an overhead gas carbon dioxide; control the pH, desulfurization; cost efficiency; air pollution control
08/13/2009WO2009098146A1 Mixer, and device and method for monitoring or controlling said mixer
07/2009
07/30/2009WO2009033575A3 Method and device for continuously processing contaminated fluids
07/29/2009CN101493705A Acid-alkali neutralizing controller
07/22/2009CN100517152C Wiper unit controller and method for controlling wiper unit
07/16/2009WO2009087247A1 Device and method for measuring the oxygen uptake rate of activated sludge for a determined concentration of a biodegradable organic substrate
06/2009
06/11/2009CA2706000A1 Method for operating a water softening system having two calibration characteristics and associated water softening system
05/2009
05/27/2009CN101440415A Control appliance of blast furnace gas all dry dedusting system
05/20/2009EP1943573B1 Method for making a food or biotechnological product using redox potential regulation
05/20/2009CN100489719C Apparatus and method for online monitoring pH value in MES production
04/2009
04/30/2009US20090107921 Chemical treatment system and method
04/28/2009US7524473 dissolved in aqueous alkaline slurry and removed from the flue gas; control the process by measuring and adjusting a redox potential of the aqueous alkaline slurry; also remove sulfur oxides present in flue gas; air pollution controlling the combustion of a fuel, coal; environmentally friendly
04/22/2009CN100480939C Adjusting device for heat value/caloric index and pressure of liquefied petroleum gas
04/21/2009US7521031 Method and apparatus for treating exhaust gas
04/07/2009US7515994 Accurate blending module and method
04/02/2009DE10122230B4 Verfahren und Vorrichtung zur Regelung des Flüssigkeitshaushalts einer Verdunstungsanlage Method and apparatus for controlling the fluid balance an evaporation plant
03/2009
03/19/2009WO2009036054A1 Method and device for cleanup and deposit removal from internal hot water system surfaces
03/19/2009WO2009036032A1 Method and device for preventing corrosion in hot water systems undergoing intermittent operations
03/19/2009WO2009033575A2 Method and device for continuously processing contaminated fluids
03/19/2009WO2009033496A1 Device for the location-dependent detection of a physical or chemical variable of a medium, measuring transducer and conveyor device for such a device
03/19/2009WO2009033495A1 Device for the location-dependent detection of a physical or chemical variable of a medium, measuring transducer and drive device for such a device
03/12/2009US20090065440 Method and device for cleanup and deposit removal from internal hot water system surfaces
03/11/2009EP2032236A2 Process for treating a gas stream
02/2009
02/26/2009WO2008057546A3 Advanced control of severe fluid catalytic cracking process for maximizing propylene production from petroleum feedstock
02/17/2009CA2403837C Use of control matrix for boiler control
02/12/2009DE10350884B4 Verfahren und Vorrichtung zur Steuerung einer Wasseraufbereitungsanlage Method and apparatus for controlling a water treatment plant
02/12/2009CA2694961A1 Control system for industrial water system and method for its use
02/04/2009EP2019977A1 A method and apparatus for fuzzy logic control enhancing advanced process control performance
02/04/2009EP2019728A1 Lithium ion-selective membrane
01/2009
01/29/2009WO2009015269A1 Method and device for preventing corrosion in hot water systems
01/29/2009CA2695087A1 Method and device for preventing corrosion in hot water systems
01/14/2009CN100451902C Automatic regulation control system for PH value of solution and its automatic control method
01/08/2009WO2009004324A1 Improvements relating to the metered dispensation of fluid
12/2008
12/31/2008CN201174056Y Double-loop intelligent pH value measuring and controlling device having CAN bus
12/31/2008CN201173135Y Control device for adding adjuvant and water to filled tailing
12/24/2008WO2008155510A1 Process control software for the control of hydraulic retention time in a biological reactor
12/18/2008WO2008074958A3 Method and device for changing the ph of a solution
12/10/2008CN201162542Y Control equipment used for controlling accessories added to milltailings
12/10/2008CN201162541Y Control equipment used for controlling water supply to milltailings
11/2008
11/26/2008EP1685275A4 Method of inhibiting corrosion in hot water systems
11/18/2008CA2302245C Performance-based control system
11/18/2008CA2220316C Method for controlling chemical synthesis processes
11/13/2008WO2008017899A3 Process for ph-control and stoichiometric ph-stat mean
11/13/2008CA2633613A1 Control system
11/12/2008CN101301538A Fuzzy intelligent control system for casting water processing medicament
10/2008
10/29/2008CN100429598C Method for inspecting and controlling dyeing liquid component of dyeing machine on-line
10/29/2008CN100429597C System for inspecting and controlling dyeing liquid component of dyeing machine on-line
10/22/2008CN201137471Y Automatic slurry-mixing device
10/22/2008CN100427572C Median automatic selection control method of powdered coal pressuring gasified oxygen stream
10/15/2008EP1980535A2 Performance-based Control System
10/14/2008US7434741 Automatic damper control for air conditioning system humidifier
10/01/2008CN101276225A PH value automatic balance liquid feeding method and apparatus
10/01/2008CN101274197A Fluid infusion for controlling pH of leaching tower, automatic draining device, and working method thereof
09/2008
09/24/2008CN101273317A Point-of-use process control blender systems and corresponding methods
09/24/2008CN101271337A PH value monitoring device and method based on CAN bus network gate
09/18/2008WO2008112945A1 Fluid sampling system with an in-line probe
09/18/2008DE102007012443A1 Einrichtung zum Regeln der Dichte eines Flüssigkeitsgemisches und Verwendung der Einrichtung Means for controlling the density of a liquid mixture, and use of the device
09/18/2008CA2679704A1 Fluid sampling system with an in-line probe
09/17/2008CN101265714A Power generating plant recirculated water and urban tap water combined water supply system
09/03/2008CN201110974Y PH automatic control system
08/2008
08/27/2008EP1962165A1 Ozonated water flow and concentration control apparatus and method
07/2008
07/29/2008CA2293686C Control and monitoring system for chemical treatment of an oilfield well
07/23/2008CN101228492A Method for controlling foaming in a process
07/17/2008DE202008006028U1 Anordnung zur automatischen Erkennung von Schwimmschlamm Arrangement for automatic detection of floating sludge
07/16/2008EP1943573A1 Method for making a food or biotechnological product using redox potential regulation
07/16/2008CN101220450A Method for suitable for batch quantity hot dipping zinc of rolled steel
07/09/2008CN101215845A Divided water supply device
07/09/2008CN101214479A Colorful steel plate inert gas circulating heating curing method and equipment thereby
07/08/2008US7396514 Electronic controls for pollutant removal
07/02/2008EP1782136B1 Cascaded control of an average value of a process parameter to a desired value
07/02/2008EP1194822B8 Annular fluid manipulation in lined tubular systems to enhance component mechanical properties and flow integrity
07/01/2008US7393380 Method of guaranteeing at least one characteristic of a fluid used for producing food products
06/2008
06/25/2008EP1934663A1 Point-of-use process control blender systems and corresponding methods
06/24/2008US7390470 Process for treating a gas stream
06/18/2008EP1931601A2 Denitrification process and system
05/2008
05/28/2008CN101187299A Automatic slurry-mixing device
05/21/2008EP1499934B1 Ozonated water flow and concentration control apparatus and method
05/21/2008EP1194822B1 Annular fluid manipulation in lined tubular systems to enhance component mechanical properties and flow integrity
05/15/2008CA2668541A1 Advanced control of severe fluid catalytic cracking process for maximizing propylene production from petroleum feedstock
05/13/2008CA2609705A1 Density measurement with gamma backscattering
04/2008
04/16/2008CN101163165A Wireless data card and method of generating negative ion
04/15/2008US7357901 Exhaust gas purification device for an internal combustion engine and exhaust gas purification method for an internal combustion engine
03/2008
03/25/2008CA2305490C Method for evaluating and controlling the biomass contained in waste water treatment biological tanks
03/12/2008CN201035420Y electrochemical reaction control type pH adjusting apparatus
03/12/2008CN101139659A Method for reclaiming nickel from acidic nickel plating waste water
03/12/2008CN101139658A Equipment for reclaiming nickel from acidic nickel plating waste water
03/11/2008US7340907 Anti-condensation control system
02/2008
02/27/2008EP1859330A4 Apparatuses and methods for manipulating droplets on a printed circuit board
02/06/2008CN201018359Y Hydrogen gas controller
01/2008
01/17/2008WO2007137143A3 Process for treating a gas stream
01/16/2008CN100361909C Adjusting method for A/O biological denitrification reactor and nitrification process, its on-line fuzzy controller and control thereof
01/15/2008CA2438797C Method of controlling solution concentration in strip cleaning line
01/09/2008EP1875321A1 Flow control
01/08/2008CA2356153C Performance-based control system
01/03/2008US20080002518 Ozonated Water Flow and Concentration Control Apparatus and Method
12/2007
12/26/2007EP1451413A4 Real-time component monitoring and replenishment system for multicomponent fluids
12/12/2007CN200990024Y Hydrogen generator controller
11/2007
11/28/2007EP1859330A2 Apparatuses and methods for manipulating droplets on a printed circuit board
11/21/2007EP1025053B1 Performance-based control system
11/21/2007CN101076723A Remote monitoring system for water
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