Isotech Europa-6, Oceanus-6, Medusa, Oberon User Manual

Metal-Clad Fixed-Point Cells

In the practical world of temperature measurement, a large number of laboratories who normally make comparison
calibrations need 1 or 2 fixed points to monitor their Standard Platinum Resistance Thermometers, or would like to
calibrate shorter thermometers than the larger cells and apparatus can accept. For this group of users Isothermal
Technology Limited has introduced our Metal-Clad Fixed-Point Cells.

The special requirements of immersion depth, plateau duration, etc. required for the calibration of SPRT’s may not be
necessary in laboratories charged with calibrating industrial resistance thermometers, thermocouples and thermistors,
but mobility and cost may be more important. Metal-Clad Cells is a name given to another category of cell, being
somewhat slimmer, slightly shorter and lower in price than the standard varieties. Metal-Clad Cells are built using
the same materials, techniques and purity of metal as the larger cells, but the uncertainties associated with them are
somewhat larger, not because of the cells but precisely because their shorter immersion depth results in a decreased
ability to qualifying them.

In consequence of their smaller size, small, lighter-weight apparatus (bench-top or cart-mounted furnaces) may be used
to melt and freeze the metal in these cells. Sealed cells and associated apparatus, such as the Model 510 Medusa and
Model 580 Oceanus-6, are available from Isotech.

Metal Clad Cells

Diameter Length Sealed Temperature Uncertainty P.O.T.T.S.
Cell Type OD/ ID Overall / Immersed °C °C Apparatus

Mercury TP 35/10 140/120 -38.8344 ±0.001 Europa-6

Gallium MP 31/10 200/120 29.7646 ±0.001 Oceanus-6

Indium MP 42/7.5-8 200/130* 156.5985 ±0.001 Medusa

Tin MP 42/7.5-8 200/130* 231.928 ±0.002 Medusa

Zinc MP 42/7.5-8 200/130* 419.527 ±0.005 Medusa

Aluminum MP 42/7.5-8 200/130* 660.323 ±0.020 Oberon

* Optional 160 immersion available

Features

660.323°C
to

-38.8344°C

SECONDARY LAB

Metal Clad Fixed Point Cell
shown with an Isotech
Semi-Standard Platinum
Resistance Thermometer

• Fixed Point Cells and Apparatus for Special
Applications

• Shorter Immersion for the Calibration of
Industrial Sensors

• Economic

• Much Less Fragile than Quartz Cells

ACCESSORIES

510-05-00 Inconel Basket including insulators for use

with Medusa 510

426-04-00 Inconel Basket including insulators for use

with Oberon 426

HOW TO ORDER

ITL-M-17724-M Mercury Metal Clad Slim Cell

ITL-M-17401-M Gallium Metal Clad Slim Cell

ITL-M-17668-M Indium Metal Clad Slim Cell

ITL-M-17669-M Tin Metal Clad Slim Cell

ITL-M-17671-M Zinc Metal Clad Slim Cell

ITL-M-17672-M Aluminum Metal Clad Slim Cell

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