Large volume for calibration of a number of sensors
Wide temperature range 30°C to 200°C
Good comparison accuracy ±0.01°C

If you have a large number of sensors to calibrate then this economically priced stirred liquid bath is the solution.

The 820 bath has been introduced to provide a liquid calibration bath with a large volume. This is to allow the bath to be used with many temperature probes simultaneously immersed in the bath or with accessories. It may also be used to maintain standard resistors at a constant temperature.

The liquid in the bath is heated to the set temperature and circulated by a propeller system.

The Aquarium is of robust construction and the liquid is contained in a stainless steel insulated enclosure which has a calibration volume 185mm long x 140mm wide x 300mm deep.

Refer to ‘Liquid Selection Guide’ on page 73 for information on liquids and important Health and Safety Information.

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Two Models Covering -40°C to 300°C.

The Orion calibration baths offer deeper calibration volumes than the Isotech Hydra series with world class temperature stability. There is a high temperature model (30°C to 300°C) and a model with built in refrigeration (-40°C to 125°C).

• Can accept large Water Triple Point Cells
• Variable Cooling Power
• Low Filling Cost

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350mm Immersion Depth
8L Capacity
0°C created by stirred ice/water mixture

The normal way of creating 0°C is via a mixture of ice and water in a Dewar Flask.

However, this can give errors of up to 4°C because water is densest at 4°C and so as the ice melts the temperatures at the bottom of the flask can rise to 4°C.

In the design of the ice flask offered by Isothermal Technology Ltd., these problems have been eliminated by stirring the water/ice mixture and segregating the ice from the water in the measuring zone.

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Three Models Covering -65°C to 300°C
Excellent Uniformity
Uncertainties to 0.0005°C

Using best practise ratio methods of comparison calibration uncertainties of less than 1mK can be obtained. The bath can also be used to realise ITS-90 Fixed Point Cells (Mercury to Tin Points) with absolute uncertainties to less than 1mK.

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Four Models, -80°C to 300°C
Stability 0.01°C
Excellent Uniformity

Precision calibration of thermometers calls for the use of stirred liquid calibration baths. The Hydra models set new standards in terms of price to performance ratio. Now Calibration Engineers and Metrologists can choose from a range of baths that offer good immersion depth, parallel tube action, giving the best uniformity and smallest calibration uncertainties, and wide temperature ranges.

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