FIELD: physics.
SUBSTANCE: vacuum manometric device includes vacuum flasks made from glass with polished sections for the analysed sample of the product and distilled water, respectively. For each flask, the bottom half is placed inside a contact cooling cup made from heat-conducting material together with a heat-insulating coating, lined with a layer of heat-conducting paste on the side of contact with the vacuum flask, and on the outer side of the base connected to the thermoelectric cooler, consisting of a thermoelectric element, also known as a Peltier element, an air-cooler and a compact ventilator for the cooler. Each vacuum flask is mounted on a hollow glass plug with a polished section with an air inlet and a socket made from glass together with a cushion layer, inside of which there is an electronic thermometer. The air inlet in its turn is connected to the left- and right-side inlet of differential liquid manometer made from glass, which is partially filled with vacuum oil, and are all together connected, respectively, to vacuum locks made from glass with polished sections for the left- and right-side vacuum measuring parts of the device, and in turn connected to each other by an air pressure leveller for the evacuation process and an air pressure leveller for the inlet process. The air pressure leveller is connected to atmospheric air inlet pipes for the left- and right-side vacuum measuring parts of the device. The vacuum manometric device also includes a gas manometer, a vacuum trap made from glass with a plug and polished sections, fitted with air evacuation pipes, connected to a vacuum pump with an electrical/electromechanical drive through a flexible vacuum hose. In each cooling ultra-thermostat, the thermoelectric element and the compact ventilator are connected to a stabilised mains power supply through a control panel, and the first of them - additionally through a voltage control device and an ammeter, and is equipped with an indicator light for operation of the thermoelectric cooler. The thermoelectric element and the voltage control device are also connected through the control panel to a unit for comparing voltage values. Vacuum locks are connected to a mechanical synchronised drive which is connected to an electric motor and an automatic switch. The vacuum manometric device also includes a protective cover together with hatches made from transparent impact-resistant material, which hermetically closes all structural components and units of the device made from glass and under vacuum pressure.
EFFECT: high accuracy, rapidness, reliability, simple design of the device with improved functionality of the device.
2 dwg
