Isotech Hydra 798 Liquid Bath Calibrator

Name: Isotech Hydra 798 Liquid Bath Calibrator
Availability: BackOrder

Parallel tube action, circular design, temperature up to 572°F (300°C), fast heat up and cool down times.

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Manufactured

By Isotech

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Product Manual Product Specs

Features

Parallel tube action
Circular design
Temp range:
- 798L: -112 to 257°F (-80°C to 125°C)
- 798M: -40 to 257°F (-40°C to 125°C)
- 798H: 86 to 572°F (30°C to 300°C)
Volume: 150mm Diameter, 300mm Deep (5 litres)
Heating time: 25°C to 200°C less than 60 minutes (C10 Oil)
Cooling time: Ambient to -80°C less than 130 minutes (Methanol)
Stability 0.01°C

The Isotech Hydra 798 Liquid Bath features good immersion depth, parallel tube action, giving the best uniformity and smallest calibration uncertainties, and wide temperature ranges.

The immersion depth of 300mm allows the requirements of "Supplementary Information to the ITS-90" to be met. This publication from BIPM recommends immersion depths of 15 to 20cm from -50°C to 50°C, and from 20 to 27cm at 200°C. Many baths in this price range are simply not deep enough to meet this requirement. Rather than simply stirring a square tank of liquid the Hydra uses parallel tube action for superior temperature uniformity. Like other Isotech liquid baths the calibration volume is cylindrical to suit thermometers, not a large square tank. The bath is filled with just 5 litres of liquid reducing filling and ongoing cost of ownership as liquids are replenished. The 798H and 798EHT feature a cooling coil which can be attached to an external source of either cold water or gas to further reduce cool down times.