Hydrometers for Liquid Gases
Our hydrometers for liquid gases enable the precise density measurement of liquid hydrocarbons such as propane, butane and their mixtures. Built as robust measuring instruments for gases in the liquid state, they are manufactured to DIN 12804 and ASTM E100-19 and designed for a vapour pressure of up to 15 bar at +15 °C. The manufacture, placing on the market and export of this mercury-thermometer version are prohibited within the EU.
Hydrometers for Liquid Gases
Our hydrometers for liquid gases enable the precise density measurement of liquid hydrocarbons such as propane, butane and their mixtures. Built as robust measuring instruments for gases in the liquid state, they are manufactured to DIN 12804 and ASTM E100-19 and designed for a vapour pressure of up to 15 bar at +15 °C. The manufacture, placing on the market and export of this mercury-thermometer version are prohibited within the EU.
Applications in hydrocarbon measurement
Hydrocarbon measurement on liquid gases places particular demands on the instrument used, because the liquid state is stable only under pressure. Hydrometers for liquid gases are used wherever the measurement of hydrocarbons must be carried out precisely and in line with the relevant standards. In the mineral oil industry they support quality control of liquid-gas mixtures and incoming inspection of propane, butane and similar media. In the chemical and pharmaceutical industries they are used for process monitoring as well as for analyses in research and development. They are also found in the food and beverage industry, for example in quality assurance of products that contain propellant gases.
Design and technical features as a measuring instrument for gases
To capture density and temperature of liquid gases reliably under pressure, every measuring instrument for gases we manufacture is fitted with an integrated thermometer that uses metallic filling. The thermometer bulb is additionally enclosed in a glass protective sleeve, which prevents measurement errors caused by pressure acting on the bulb. This design feature is essential for reliable density measurement of liquids with hydrometers under real process conditions. The instruments cover a measuring range of 0.500 to 0.650 g/cm³ and reach an accuracy of ±0.0005 g/cm³ at a reference temperature of 15 °C (60/60 °F). They are manufactured to DIN 12804 and ASTM E100-19, the relevant standards for hydrocarbon measurement with hydrometers.
Mercury thermometers: EU ban on placing on the market and export
In the standard-compliant version, hydrometers for liquid gases to DIN 12804 and ASTM E100-19 include an integrated thermometer with mercury filling. The manufacture, placing on the market and export of mercury-containing measuring instruments are prohibited within the European Union, so this version is not permitted for sale or use in the EU.
For enquiries about hydrometers for other media or applications, our measurement technology specialists are at your disposal. Please send your enquiry via our contact form.
Unique all-round service by our Ludwig Schneider Messtechnik GmbH
Our DAkkS calibration laboratory is accredited according to DIN EN ISO/IEC 17025:2018 for the measurands temperature and density. We measure temperatures from -196 °C to 1,820 °C and guarantee the highest precision according to all international standards. Together with our extensive product range and our modern calibration laboratory, we offer you a comprehensive all-round service.
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