Refrigerated thermostatic bath ITL-M-18233

for temperature calibrationdigital displayconstant temperature

Presentation
The ITL-M-18233 holding bath is designed to maintain large Triple Point of Water cells after the formation of the ice mantle. It preserves these cells in an operational state for several weeks or months so they remain usable for calibrations.
It can accommodate up to 4 large-format cells for probe calibration according to ITS-90. The bath prevents sudden complete freezing that could break glass or quartz envelopes. The tank casing is made of laminated wood to improve mechanical strength and temperature stability.

Refrigeration system and safety
Cooling is provided by Peltier modules engineered to minimize temperature variations; their design ensures low power consumption, silent operation and no vibration.
Safety is ensured actively by an electrical safety circuit and passively by the physical properties of ice: if the Peltier modules become too cold, ice first forms at the bath surface in contact with the blocks, slowing transfer of the gel to the bath water.

Comparative advantages
Unlike mechanically refrigerated baths designed for more generic applications, this system offers a very narrow and controlled temperature range, vibration-free operation, capacity to host 1 to 4 cells simultaneously, and reduced operating costs.

Additional features
A color graphic display provides system control. The Ethernet interface enables remote temperature regulation. A recording function logs bath and ambient air temperatures and data can be exported to a USB stick.

History and usage
This bath has a long track record and has been trusted by numerous national calibration laboratories for over 35 years. It was specifically designed to accept 1 to 4 cells and is not an adaptation of a standard calibration bath.

Main specifications
Operating temperature: 0.01°C @ 0.3°C
Uncertainty / Uncertainty inside the cell: ±0.001°C / ±0.0001°C
Operating ambient temperature: 18°C to 28°C
Resolution: 0.001°C
Interfaces: Ethernet, USB Host

General specifications
Dimensions: 910 x 635 x 710 mm
Weight: 66 kg
Power supply: 100 / 130 V or 208 / 240 V (50/60 Hz)
Power: 150 Watts

Technical characteristics / specifications

• Use: maintenance of Triple Point of Water cells (operational state after ice mantle formation)
• Capacity: 1 to 4 large-format cells (depending on holding accessories)
• Enclosure: laminated wood for thermal stability and mechanical strength
• Cooling system: Peltier modules (low consumption, silent, no vibration)
• Very precise holding range: -0.3 to +0.3°C around 0.01°C
• Safety: electrical safety circuit + physical behavior of ice limiting risk of envelope rupture
• Control: color graphic display
• Connectivity: Ethernet for remote regulation, USB Host for data export
• Recording: bath and ambient air temperature logging (export to USB stick)
• Power supply: 100/130 V or 208/240 V (50/60 Hz)
• Power consumption: 150 W
• Dimensions and mass: 910 x 635 x 710 mm, 66 kg