Flow calibration - Gases & Liquids

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 CALIBRATION

When to calibrate?

INFORMATION

When to calibrate?

Underwriters Laboratories (UL) calibration requirements stipulate that inspection, measuring and test equipment (including flow meter) must be calibrated at least annually for their intended function and use or whenever the flow meter has been subject to some form of abuse that may affect the measurement device fitness for use.

The manufacturer’s most commonly recommended calibration interval for precision test equipment is also one year. The one year interval optimizes the cost of calibration versus the cost of an out-of-tolerance for many users. This interval achieves the desired reliability target and helps to resolve early minor problems that affect process consistency and repeatability for most industries.

However, if in practice a response to an out-of-tolerance measurement leads to significant costs or if you are using a new meter or one located in an hostile environment, or if you are requiring FDA approval, it is recommend to calibrate on shorter calibration schedule in order to investigate early minor deviation from the standards until you get an accurate "footprint" of the meter and then switch to longer interval of calibration.

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pdf UL Calibration Requirements

pdf Calibration Intervals - Fluke Corporation

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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

Signed agreement with the NASA

FLOW CALIBRATION

When to calibrate?

When to calibrate?