Abstract:
PROBLEM TO BE SOLVED: To provide a sensor having a substrate for embedding oxygen sensitive dye, while the thus formed sensor is chemically stable to a high temperature, has a high-temperature resistance in the relevant temperature range, and is gas-permeable to a high extent. SOLUTION: The object is achieved in that the substrate consists of a fluoridated silicone polymer. The invention can be applied with particular advantage if the medium is a consumable oil, such as, for instance, sunflower oil, or if a measurement is performed at relatively high temperatures or in chemically aggressive environments. An additional advantageous property is that the substrate is found to adhere well to glass. As a consequence, in practice, the oxygen content can simply be determined in consumable oil products 2 stored in glass, from which in turn a storage life can be derived, and the sensor will not come loose at high temperatures or in chemically aggressive environments. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
An object is to offer a method that can efficiently measure the oxygen content of both the headspace and fluid within a hermetically sealed container by taking advantage of the characteristics of a fluorescent-type oxygen concentration meter. A container 2 is pierced using a hollow needle 28 with the interior space 28a sealed from the outside and the tip of said hollow needle 28 removed, and the interior space 28a is made continuous with the headspace within the container 2; a probe 11 of a fluorescent oxygen concentration meter 10 is inserted through the hollow needle 28 to the interior of the container 2; the fluorescent material of the probe 11 is positioned in the headspace 3 within the container 2, and the oxygen concentration of the headspace 3 is measured; and the probe 11 is inserted further so that the fluorescent material is submerged in the fluid 4 inside the container 2, and the dissolved oxygen concentration inside the fluid 4 is measured.
Abstract:
PROBLEM TO BE SOLVED: To provide a method capable of efficiently measuring the amounts of oxygen in the head space and liquid in a hermetically closed container by putting a fluorescent type oxygen densitometer to practical use. SOLUTION: A hollow needle 28 is thrust in a container 2 in a state that the internal space 28a of the hollow needle 28 is sealed from outside excepting the tip of the hollow needle 28 to allow the internal space 28a to communicate with the head space in the container 2 and the probe 11 of the fluorescent type oxygen densitometer 10 is inserted in the container 2 through the hollow needle 28 while the fluorescent substance of the probe 11 is positioned in the head space 3 within the container 2 to measure the concentration of oxygen in the head space 3 and the probe 11 is further inserted so that the fluorescent substance is immersed in the liquid 4 of the container 2 to measure the concentration of dissolved oxygen in the liquid 4. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an oxygen sensing particle for various applications having improved response properties without decreasing signals in a hydrophilic environment. SOLUTION: A composite contains a core and a hydrophobic coating material for surrounding the core. The core contains at least one kind of oxygen sensing particle. Oxygen in a sample is detected and monitored by using the microencapsulated oxygen sensing particle. COPYRIGHT: (C)2005,JPO&NCIPI