Description
Trusted in primary temperature metrology
The Model 18233 has been used in internationally significant water triple point work, including the CCT-K7 key comparison involving cells from 21 leading laboratories, and a recent PTB–NIM comparison of water triple point cells. These published examples reinforce its role as a proven maintenance bath for demanding primary standards applications.
- CCT-K7 key comparison record, BIPM
https://www.bipm.org/kcdb/comparison?id=105 - PTB–NIM comparison paper, Measurement: Sensors
https://www.sciencedirect.com/science/article/pii/S266591742400597X
The Isotech Model 18233 Water Triple Point Maintenance Bath is not an adaptation of general-purpose equipment, but is specifically designed to maintain and safeguard one to four Water Triple Point Cells.
Cooling is accomplished by efficient solid-state Peltier chilling modules, powered so that the rate of temperature change is very small. Solid state cooling ensures minimal power consumption, silent operation and no vibration.
Safety is provided by both electrical safety circuits and passively by the physics of ice. If the Peltier chillers become too cold, the first ice which forms is on the water tank surfaces directly in contact with the chillers, effectively inhibiting further rapid transfer of freezing to the bath water.
Compared to general purpose baths with mechanical cooling it has advantage of
- Safer Operating Range -0.3 to +0.3C
- Solid State Vibration Free Cooling – Quieter Operation
- Holds up to Four Cells
- Lower Energy Consumption / Operating Costs
Updated Control System
The control system has been updated and now features a large colour display with crystal clear graphics. An Ethernet interface allows the bath temperature to be remotely monitored. Other features include data logging of the bath temperature along with the air intake temperature – the data can be exported to a USB drive. The bath has a long and successful history and is relied on by many National Laboratories throughout the world. This history of successful use is one of the most important reasons for choosing Isotech products.
