Abstract:
A chemical and/or biochemical system (1) having at least one reaction vessel (3) in which chemical and/or biochemical reactions may take place, the temperature of the reaction vessels being cycled between at least a highest predetermined temperature and a lowest predetermined temperature, the system comprising a thermal mount (4) for receiving the reaction vessel (s), the thermal mount being thermally coupled to a first, thermally conductive side of a thermoelectric module (5), a second thermally conductive side of the thermoelectric module being thermally coupled to a heat sink (6) and being provided with a pair of electrical contacts (33) to which a pair of electrically conductive wires (34) is connected for coupling to a power source, characterized in that a flexible adhesive (31, 32) is provided between the first thermally conductive side of the thermoelectric module and the thermal mount and between the second thermally conductive side of the thermoelectric module and the heat sink, whereby the adhesive is relatively thermally insulating compared to the first and second thermally conductive sides of the thermoelectric module and forms the sole coupling, thermal or mechanical, between the thermoelectric module and the thermal mount and between the thermoelectric module and the heat sink.
Abstract:
The invention provides a method for chemical signature resolved detection of a concealed object within a system. The method includes irradiating the system at a plurality of positions with aplurality of electromagnetic radiation of specific wavelength; capturing a certain component of the scattered electromagnetic radiation from the object at a plurality of locations along various 3D planes around the system; obtaining a plurality of profiles from the captured component of the scattered electromagnetic radiation; filtering the profiles to obtain a chemical signature specific to the object; and resolving the chemical signatures to detect the concealed object, wherein, the step of detection includes determination of the shape, size and location of the object.
Abstract:
A method of monitoring blockage of a sight tube attached to a wall of a process chamber, the sight tube being operatively associated with a TDLAS optical head with a window between the sight tube and the TDLAS optical head. The method includes the steps of providing a photo sensor in the TDLAS optical head, the photo sensor being positioned to receive light emitted by a light emitting process within the process chamber. An emission signal produced by light emitted by the light emitting process within the process chamber being received by the photo sensor is monitored. A determination is made if the emission signal is degrading.
Abstract:
A system for detecting the presence of water in oil, comprises an array of infra-red emitters for emitting light at a first plurality of wavelengths and an array of infra-red receivers, each arranged to detect light from a respective emitter at the respective wavelength and produce a light signal representative of the light detected. The receivers are spaced from the emitters by a gap through which oil in use may pass. A processor is provided to analyse and compare the respective light signals to determine an amount of water present in the oil. By observing variations in absorption, the presence of water can be identified.