size. Venus is closer to the sun than any other planet except Mercury. At its closest approach, Venus is about 38.2 million kilometers from Earth.

Although Venus is called the Earth twin, its surface conditions appear to be very different from those of the Earth. The planet is surrounded by thick clouds of sulfuric acid, preventing its observation. The surface of Venus is extremely hot and dry. The temperature of the planet's surface is about 870 degrees F (465 degrees C), the temperature is higher than that of any other planet.

Most astronomers believe that Venus's high surface temperature can be explained by what is known as the greenhouse effect. A greenhouse lets in radiant energy from the sun, but it prevents much of the heat from escaping. The thick clouds and dense atmosphere of Venus work in much the same way. The sun's radiant energy readily filters into the planet's atmosphere. But the large droplets of sulfuric acid present in Venus's clouds -- and the great quantity of carbon dioxide in the atmosphere -- seem to trap much of the solar energy at the planet's surface.

Flow Meters & Flow Controllers

Vortex Flow Meters

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Hontzsch Flow Measuring Technology

Hontzsch® Vortex flow sensor is one of the few instruments capable of measuring gases with suspended particles. A crucial advantage of this instrument lies in the independence of density, pressure and temperature from the working medium. Moreover, its turndown ratio is impressively high: 1:160.

The principle of measurement of the Hontzsch vortex flow sensor is based on vortices being shed when the flowing medium reaches a rod-shaped obstruction - the Karman phenomenon of vortex shedding - whereby the vortex shedding frequency is a dimension for the flow velocity.

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Signed agreement with the NASA

Flow Meters & Flow Controllers

Vortex Flow Meters

Hontzsch Flow Measuring Technology

Vortex Flow Sensor

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	2010-10-15 Signed agreement with the NASA Polycontrols will be contributing to the next mission to Venus, whose objective is to explore its surface which cannot be seen from Earth. An agreement was reached with the NASA Glenn Research Center for the supply of a gas mixing system to simulate the atmosphere of the planet Venus. This system will reproduce the planet’s atmosphere to test the electronic equipment of the exploration module which must withstand thermal stress and a highly acidic and corrosive environment. Venus is known as the Earth's twin because the two planets are similar in ... size. Venus is closer to the sun than any other planet except Mercury. At its closest approach, Venus is about 38.2 million kilometers from Earth. Although Venus is called the Earth twin, its surface conditions appear to be very different from those of the Earth. The planet is surrounded by thick clouds of sulfuric acid, preventing its observation. The surface of Venus is extremely hot and dry. The temperature of the planet's surface is about 870 degrees F (465 degrees C), the temperature is higher than that of any other planet. Most astronomers believe that Venus's high surface temperature can be explained by what is known as the greenhouse effect. A greenhouse lets in radiant energy from the sun, but it prevents much of the heat from escaping. The thick clouds and dense atmosphere of Venus work in much the same way. The sun's radiant energy readily filters into the planet's atmosphere. But the large droplets of sulfuric acid present in Venus's clouds -- and the great quantity of carbon dioxide in the atmosphere -- seem to trap much of the solar energy at the planet's surface. Read more Archives