Abstract: A temperature measuring arrangement measures the temperature of a fluid passing a component. The arrangement includes a temperature measuring device having a substrate of low thermal capacity that has applied thereto two or more temperature recording media. The device is attached to and spaced apart from the component and is in the fluid flow.

Abstract: A marker paint comprises 42 wt % to 52 wt % pigment, 31 wt % to 37 wt % acrylic resin and 17 wt % to 21 wt % silicone resin excluding solvent. The pigment comprises cobalt titanium oxide, titanium nickel antimony oxide, cobalt aluminum oxide or cadmium sulphide selenium to give a green, yellow, blue or red color respectively. The marker paint is used in conjunction with an irreversible temperature indicating paint to determine if there is any debris and/or dirt on the irreversible temperature indicating paint to affect the accuracy of the temperature measurement of the irreversible temperature indicating paint.

Abstract: An irreversible temperature indicating paint comprises 0.7 wt % to 0.9 wt % toluidine red, 7 wt % to 32 wt % cobalt aluminium spinel and glass, 7 wt % to 32 wt % cobalt chromite spinel, alumina, purple gold and frit, 37 wt % to 41 wt % acrylic resin, 20 wt % to 23 wt % silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. A particular irreversible temperature indicating paint comprises 0.78 wt % toluidine red, 19.55 wt % cobalt aluminium spinel and glass, 19.55 wt % cobalt chromite spinel, alumina, purple gold and frit, 39.1 wt % acrylic resin, 21.1 wt % silicone resin excluding solvent. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of a gas turbine engine.

Abstract: A marker paint comprises 42 wt % to 52 wt % pigment, 31 wt % to 37 wt % acrylic resin and 17 wt % to 21 wt % silicone resin excluding solvent. The pigment comprises cobalt titanium oxide, titanium nickel antimony oxide, cobalt aluminium oxide or cadmium sulphide selenium to give a green, yellow, blue or red colour respectively. The marker paint is used in conjunction with an irreversible temperature indicating paint to determine if there is any debris and/or dirt on the irreversible temperature indicating paint to affect the accuracy of the temperature measurement of the irreversible temperature indicating paint.

Abstract: A marker paint comprises 42 wt % to 52 wt % pigment, 31 wt % to 37 wt % acrylic resin and 17 wt % to 21 wt % silicone resin excluding solvent. The pigment comprises cobalt titanium oxide, titanium nickel antimony oxide, cobalt aluminium oxide or cadmium sulphide selenium to give a green, yellow, blue or red color respectively. The marker paint is used in conjunction with an irreversible temperature indicating paint to determine if there is any debris and/or dirt on the irreversible temperature indicating paint to affect the accuracy of the temperature measurement of the irreversible temperature indicating paint.

Abstract: A temperature measuring arrangement measures the temperature of a fluid passing a component. The arrangement comprises a temperature measuring device having a substrate of low thermal capacity that has applied thereto two or more temperature recording media. The device is attached to and spaced apart from the component and is in the fluid flow.

Abstract: An irreversible temperature indicating paint comprises 29 wt % to 37 wt % cobalt chromite spinel, alumina, gold purple and frit, 35 wt % to 45 wt % acrylic resin and 20 wt % to 30 wt % silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. A particular irreversible temperature indicating paint comprises 34.9 wt % cobalt chromite spinel, alumina, gold purple and frit, 42.5 wt % acrylic resin and 22.6 wt % silicone resin excluding solvent. The irreversible temperature indicating paint has four or more colour changes in the temperature range 500° C. to 900° C. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other component are subjected in operation of a gas turbine engine.

Abstract: An irreversible temperature indicating paint comprises 29 wt % to 37 wt % cobalt aluminium spinel and glass, 35 wt % to 45 wt % acrylic resin and 20 wt % to 30 wt % silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. A particular irreversible temperature indicating paint comprises 34.9 wt % cobalt aluminium spinel and glass, 42.5 wt % acrylic resin and 22.6 wt % silicone resin excluding solvent. The irreversible temperature indicating paint has four or more colour changes in the temperature range 500° C. to 900° C. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of the gas turbine engine.

Abstract: An irreversible temperature indicating paint comprises 29 wt % to 37 wt % cobalt zinc silicon blue phenacite and a frit, 35 wt % to 45 wt % acrylic resin and 20 wt % to 30 wt % silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. A particular irreversible temperature indicating paint comprises 34.9 wt % cobalt zinc silicon blue phenacite and a frit, 42.5 wt % acrylic resin and 22.6 wt % silicone resin excluding solvent. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of a gas turbine engine.

Abstract: A marker paint comprises 42 wt % to 52 wt % pigment, 31 wt % to 37 wt % acrylic resin and 17 wt % to 21 wt % silicone resin excluding solvent. The pigment comprises cobalt titanium oxide, titanium nickel antimony oxide, cobalt aluminium oxide or cadmium sulphide selenium to give a green, yellow, blue or red colour respectively. The marker paint is used in conjunction with an irreversible temperature indicating paint to determine if there is any debris and/or dirt on the irreversible temperature indicating paint to affect the accuracy of the temperature measurement of the irreversible temperature indicating paint.

Abstract: A black high temperature emissivity paint comprises 27.5 wt black pigment, 50.5% acrylic resin and 22 wt % silicone resin excluding solvent. The black pigment comprises (Co,Fe) (Fe,Cr)2 O4 and Ni. The black high temperature emissivity paint is applied to components of gas turbine engines and the gas turbine engine is run at the gas turbine engines normal operating conditions. The component coated with the black high temperature emissivity paint is viewed by an optical pyrometer and the optical pyrometer is used to determine the temperature of the component. The pyrometer measures the energy radiated by the component. The advantage of the black high temperature emissivity paint is that the colour, and hence the emissivity, remain unchanged at temperatures of 1100° C. and greater. This enables the pyrometer to be used without the need to recalibrate the pyrometer to take into account changes in emissivity of the black high temperature emissivity paint. It enables higher temperature use with more accuracy.

Abstract: An irreversible temperature indicating paint comprise 15 to 18 wt % cobalt ammonium phosphate, 5.0 to 6.0 wt % sodium alumino sulpho silicate, 8.5 to 10.5 wt % silica, 7.0 to 8.5 wt % alumina, 0.5 to 0.7 wt % toluidine red, 35 to 43 wt % acrylic resin and 19 to 23 wt % silicone resin excluding solvent. A particular irreversible temperature indicating paint comprising 16.4 wt % cobalt ammonium phosphate, 5.5 wt % sodium alumino sulpho silicate, 9.4 wt % silica, 7.8 wt % alumina, 0.6 wt % toluidine red, 39.1 wt % acrylic resin and 21.1 wt % silicone resin excluding solvent. The irreversible temperature indicating paint has at least six color changes in the temperature range 550° C. to 1250° C. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of a gas turbine engine.

Abstract: A black high temperature emissivity paint comprises 27.5 wt black pigment, 50.5% acrylic resin and 22 wt % silicone resin excluding solvent. The black pigment comprises (Co,Fe) (Fe,Cr)2 O4 and Ni. The black high temperature emissivity paint is applied to components of gas turbine engines and the gas turbine engine is run at the gas turbine engines normal operating conditions. The component coated with the black high temperature emissivity paint is viewed by an optical pyrometer and the optical pyrometer is used to determine the temperature of the component. The pyrometer measures the energy radiated by the component. The advantage of the black high temperature emissivity paint is that the colour, and hence the emissivity, remain unchanged at temperatures of 1100° C. and greater. This enables the pyrometer to be used without the need to recalibrate the pyrometer to take into account changes in emissivity of the black high temperature emissivity paint. It enables higher temperature use with more accuracy.

Abstract: An irreversible temperature indicating paint comprises 29 wt % to 37 wt % cobalt chromite spinel, alumina, gold purple and frit, 35 wt % to 45 wt % acrylic resin and 20 wt % to 30 wt % silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. A particular irreversible temperature indicating paint comprises 34.9 wt % cobalt chromite spinel, alumina, gold purple and frit, 42.5 wt % acrylic resin and 22.6 wt % silicone resin excluding solvent. The irreversible temperature indicating paint has four or more colour changes in the temperature range 500° C. to 900° C. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other component are subjected in operation of a gas turbine engine.

Abstract: An irreversible temperature indicating paint comprises 29 wt % to 37 wt % cobalt zinc silicon blue phenacite and a frit, 35 wt % to 45 wt % acrylic resin and 20 wt % to 30 wt % silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. A particular irreversible temperature indicating paint comprises 34.9 wt % cobalt zinc silicon blue phenacite and a frit, 42.5 wt % acrylic resin and 22.6 wt % silicone resin excluding solvent. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of a gas turbine engine.

Abstract: An irreversible temperature indicating paint comprise 15 to 18 wt % cobalt ammonium phosphate, 5.0 to 6.0 wt % sodium alumino sulpho silicate, 8.5 to 10.5 wt % silica, 7.0 to 8.5 wt % alumina, 0.5 to 0.7 wt % toluidine red, 35 to 43 wt % acrylic resin and 19 to 23 wt % silicone resin excluding solvent. A particular irreversible temperature indicating paint comprising 16.4 wt % cobalt ammonium phosphate, 5.5 wt % sodium alumino sulpho silicate, 9.4 wt % silica, 7.8 wt % alumina, 0.6 wt % toluidine red, 39.1 wt % acrylic resin and 21.1 wt % silicone resin excluding solvent. The irreversible temperature indicating paint has at least six colour changes in the temperature range 550° C. to 1250° C. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of a gas turbine engine.

Abstract: An irreversible temperature indicating paint comprises 25 wt % to 50 wt % cobalt silicate, 0 wt % to 20 wt % alumino silicate, 0.5 wt % to 5 wt % toluidine red, 25 wt % to 40 wt % acrylic resin and 10 wt % to 20 wt % silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. The irreversible temperature indicating paint has at least five colour changes in the temperature range 1050° C. to 1350° C. A particular irreversible temperature indicating paint comprises 33.8 wt % cobalt silicate, 16.9 wt % alumino silicate, 2 wt % toluidine red, 30.8 wt % acrylic resin and 16.5 wt % silicone resin excluding solvent. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of the gas turbine engine.

Abstract: A method of flow visualization comprises the steps of coating the surface of a component in a pigmented oil-based paint of non-gelling characteristics, applying dry dye particles, which are soluble in the oil based paint to the surface of the coating and passing a fluid flow over the component.The fluid flow causes the dye particles to translate across the coating so that regions of the particles that are in contact with the coating dissolve to leave trails on the surface of the coating which are indicative of the relative strengths of the fluid flows acting on the surfaces of the component.