Patents
Patents for G05D 21 - Control of chemical or physico-chemical variables, e.g. ph-value (1,435)
07/2011
07/12/2011US7975496 Vehicle air conditioning system
07/06/2011CN101271337B PH value monitoring device and method based on CAN bus network gate
06/2011
06/22/2011EP2334431A1 Interruption of measured variable analyses in an automatic water softening system when defined operating situations are present
06/22/2011DE102010054346A1 Feuchtmittel Härteregelung Dampening hardness control
06/22/2011DE102010054345A1 Verfahren zum Aufbereiten eines Feuchtmittels einer Nassoffsetdruckmaschine A method for preparing a dampening solution to a wet offset printing machine
06/14/2011US7958740 Vehicular air-conditioner
06/09/2011WO2011068612A1 Application of visbreaker analysis tools to optimize performance
06/08/2011CN101048710B Cascaded control of an average value of a process parameter to a desired value
04/2011
04/20/2011CN102023655A Method and system for automatically controlling ammonia injection and pH value of tower top of oil refining device
03/2011
03/23/2011EP2185989B1 Method and device for continuously processing contaminated fluids
03/23/2011CN201773331U Alkalinity automatic control device
03/23/2011CN101990456A Mixer, and device and method for monitoring or controlling said mixer
03/02/2011EP2288432A1 Multi-stage accurate blending system and method
02/2011
02/16/2011CN201749376U Device capable of automatically supplementing liquid ammonia for etching container
02/09/2011CN101214479B Colorful steel plate inert gas circulating heating curing method and equipment thereby
01/2011
01/26/2011CN101276225B PH value automatic balance liquid feeding method and apparatus
01/19/2011CN201711089U pH regulating control system of wet process desulfurization equipment of small and middle sized boilers
01/18/2011US7872062 Control of pH in formaldehyde-free binder systems
01/13/2011WO2011004015A2 Management of a number of swimming pools
12/2010
12/22/2010CN101923361A Water-saving control method
12/22/2010CN101923360A Water-saving control device
11/2010
11/23/2010CA2577096C Cascaded control of an average value of a process parameter to a desired value
11/17/2010CN101888979A Method for operating a water softening system having two calibration characteristics and associated water softening system
11/03/2010CN101875668A Method for continuously adjusting pH value of dilute aqueous agent in glyphosate production process
10/2010
10/27/2010EP2242565A1 Mixer, and device and method for monitoring or controlling said mixer
10/27/2010CN201613126U 一种葡萄糖生产中的配酸配碱装置 One kind of glucose production with an acid with a base unit
10/20/2010EP2241810A1 Flow rate control device
10/14/2010WO2010116262A1 Apparatus and operating systems for manufacturing impregnated wood
10/14/2010CA2758193A1 Apparatus and operating systems for manufacturing impregnated wood
10/13/2010CN101861556A Control system for industrial water system and method for its use
09/2010
09/29/2010EP2233929A2 Reagent preparing apparatus and sample analyzer
09/29/2010EP2231526A2 Method for operating a water softening system having two calibration characteristics and associated water softening system
09/29/2010CN201594181U Intelligent control device for plant growth environment
09/16/2010WO2010103151A1 Control system for the biological elimination of nitrogen from waste water through low-cost sensors
09/15/2010CN101833341A Automatic control system of PH value in alkaline etching and control method thereof
09/08/2010CN101139659B Method for reclaiming nickel from acidic nickel plating waste water
08/2010
08/25/2010EP2221136A1 Soldering assembly and method for recognising impurities contained in a solder
08/25/2010EP2220545A2 Control system for industrial water system
08/25/2010CN101815810A Method and device for preventing corrosion in hot water systems
08/25/2010CN101813949A Electrochemical method for regulating pH value of solution in situ
08/11/2010CN101274197B Automatic draining and supplying device for controlling pH of leaching tower, , and working method thereof
08/04/2010CN201537459U SO3 concentration controlling device
08/03/2010US7766180 Collapsible bulk cage liner
07/2010
07/22/2010WO2009020709A3 Control system for industrial water system
07/21/2010CN101048709B Optimized air pollution control
07/20/2010US7758833 Switching control for alternately performing sulfur oxide removal and particulate filter regeneration, and maintain the temperature of the NOx removing device or other catalysts for purifying exhaust gases within a proper range
07/14/2010CN101776923A Device for high-precision regulating industrial process pH value and automatic control method thereof
07/14/2010CN101776922A pH value control system in sulfonating neutralization process
07/08/2010WO2010076432A1 Novel method for cultivating yeasts of the yarrowia genus
07/01/2010WO2010075121A1 Control system for monitoring localized corrosion in an industrial water system
07/01/2010US20100163469 Control system for monitoring localized corrosion in an industrial water system
07/01/2010CA2748258A1 Control system for monitoring localized corrosion in an industrial water system
06/2010
06/29/2010US7744840 Selective catalytic reduction system and process using a pre-sulfated zirconia binder
06/22/2010CA2515981C Method and device for controlling paper machine, and program and storage medium
06/15/2010US7736595 selective catalytic reduction (SCR) analysis module that estimates ammonia (NH3) stored by an SCR catalyst, maximum NH3 storage capacity of SCR catalyst, NH3 slip downstream of SCR catalyst, NH3 oxidation, and NH3 conversion through reaction with nitrogen oxides (NOx); and dosing management module
06/10/2010US20100139481 Method of treating a gas system
06/09/2010CN101727102A Algae cultivation system control model and device based on 485 bus
05/2010
05/26/2010CN201482369U Air purifying device
05/19/2010EP2185989A2 Method and device for continuously processing contaminated fluids
05/18/2010US7718153 Catalytic process for control of NOx emissions using hydrogen
05/12/2010CN201464930U Automatic detection and control device for pH value
05/05/2010CN101072629B Single integrated humidity and ventilation control in an HVAC system
05/05/2010CN101052926B Model predictive control of air pollution control processes
04/2010
04/28/2010EP2179076A1 Method and device for preventing corrosion in hot water systems
04/28/2010CN201444261U Sulfur hexafluoride density controller
04/27/2010US7704472 Air pollutant control system and method for removing mercury in flue gas
04/14/2010CN101451440B Control method and control device for controlling auxiliary material and water addition to tailings
03/2010
03/30/2010CA2527380C Method and apparatus for formulating and controlling chemical concentrations in a gas mixture
03/24/2010CN101681172A Fluid sampling system with an in-line probe
03/24/2010CN101676220A Ozonated water flow and concentration control apparatus and method
03/18/2010US20100068103 Control of pH in formaldehyde-free binder systems
03/17/2010EP2162804A1 Process control software for the control of hydraulic retention time in a biological reactor
03/11/2010WO2010025697A1 Interruption of measured variable analyses in an automatic water softening system when defined operating situations are present
03/11/2010CA2734777A1 Interruption of measured variable analyses in an automatic water softening system when defined operating situations are present
02/2010
02/25/2010US20100044320 Chemical reactors
02/09/2010CA2532079C Remote monitoring system for water supply network
02/09/2010CA2524364C Controlling chemical dispense operations based on a conductivity offset
02/04/2010US20100028202 Proactive control system for an industrial water system
01/2010
01/13/2010EP1875321B1 Flow control
01/12/2010CA2373338C Method, device and use of said method for biological elimination of metal elements present in an ionized state in water
01/07/2010WO2009071066A3 Method for operating a water softening system having two calibration characteristics and associated water softening system
01/05/2010US7642306 for manufacturing glass fibers
12/2009
12/23/2009CN101611118A Advanced control of severe fluid catalytic cracking process for maximizing propylene production from petroleum feedstock
12/22/2009US7635092 Humidity-controlled chamber for a thermogravimetric instrument
12/16/2009EP2132611A1 Fluid sampling system with an in-line probe
12/09/2009CN101598371A Air purifier
12/09/2009CN100567665C Power generating plant recirculated water and urban tap water combined water supply system
11/2009
11/24/2009US7622037 Ozonated water flow and concentration control apparatus and method
11/11/2009CN201345509Y SF* switch house environment intelligent monitoring system
11/11/2009CN100558981C Paper machine control method and control device
11/03/2009US7611684 Oxidative scrubbing of water insoluble, waste gases from semiconductor processing; oxidation-reduction potential probe measures the oxidation-reduction potential of the scrubbing fluid and adds the oxidizer as needed; a pH probe measures the acidic pH of the scrubbing fluid and adds a base as needed
10/2009
10/15/2009US20090259081 Method and system for reducing heating value of natural gas
10/14/2009CN100549894C Ozonated water flow and concentration control apparatus and method
09/2009
09/16/2009EP2100202A2 Method and device for changing the ph of a solution
09/16/2009EP2099880A2 Advanced control of severe fluid catalytic cracking process for maximizing propylene production from petroleum feedstock
09/03/2009WO2008057546A9 Advanced control of severe fluid catalytic cracking process for maximizing propylene production from petroleum feedstock
08/2009
08/26/2009CN100533322C Passive method of adjusting mixing ratio of liquids and its devices
08/26/2009CN100533321C Controlling chemical dispense operations based on a conductivity offset
08/26/2009CN100532624C Method adapting to batch quantity hot dipping zinc of rolled steel
08/26/2009CN100532622C Comprehensive plating promoter treatment process and apparatus for hot galvanizing production line
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