Water triple point cell 5901
Fluke Calibration

About This Product

■Essentials for primary temperature standard・Inexpensive and easy-to-use standard with an uncertainty of 0.0001 °C or less
・Choose from 4 types of dimensions and 2 types of materials (quartz and glass)
・Isotope composition of international standard VSMOW

The triple point of water is not only the most accurate and fundamental temperature standard, but also the cheapest and easiest to use.

■Necessity of triple point cell for waterWater triple point cells have four important uses. The first step is to check for any unacceptable thermometer drift during the period between calibrations (and even after calibration if the thermometer has been transported). Interim checks are very important in maintaining the reliability of temperature measurements until the next calibration. Second, the critical calibration point, the triple point of water, is achieved with excellent uncertainty.

Third, the probe is characterized using the ratio (the ratio of the resistance at various ITS-90 fixed points to the thermometer resistance at the water triple point, expressed in "W"). Intermediate checks at the triple point of water can quickly and easily update critical thermometer standards and extend calibration intervals.

Finally, in ITS-90, the triple point of water is 273.16 K (0.01 °C), and 1 Kelvin is defined as 1/273.16 of the thermodynamic temperature of the triple point of water. The emphasis will be on the intersection of the practical temperature scale (ITS-90) and the thermodynamic temperature scale.

A good water triple point cell contains only pure water and pure steam. (There is almost no residual air left.) When some of the water freezes normally and three phases of water exist simultaneously in the cell, the “triple point of water” is achieved, but the heart The cell achieves this temperature with an expanded uncertainty of less than 0.0001 °C and a repeatability of within 0.00002 °C.

Simply put, a water triple point cell is made of glass and water, but it's more than just glass and water. First of all, it's not just water inside.

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Water triple point cell 5901

Handling Company
Fluke Calibration

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Testing Equipment

Calibrators

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1 Models of Water triple point cell 5901

Image	Part Number	Price (excluding tax)	Immersion degree (from water surface to bottom of well)	Water source	Material	Expanded uncertainty (k=2)	Size	Reproducibility	DDVSMOW	D18OVSMOW	Deviation effect from VSMOW
	5901A-G	Available upon quote	265mm	Ocean	Borosilicate glass	< 0.0001℃	50mm O.D. 12mm ID 450mm long	0.00002℃	± 10 ‰ (± 1%)	± 1.5 ‰ (± 0.15%)	± 7 µK

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Fluke Calibration

Japan

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Water triple point cell 5901 Fluke Calibration

About This Product

■Essentials for primary temperature standard

■Necessity of triple point cell for water

1 Models of Water triple point cell 5901

5901A-G

Customers who viewed this product also viewed

Other products of Fluke Calibration

About Company Handling This Product

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Water triple point cell 5901
Fluke Calibration