- Fluke Calibration has launched three new refrigerated temperature calibration baths: models 7508, 7511, and 7512.
- Designed for metrology laboratories and industrial calibration departments, these units provide temperature control down to –10 °C.
- The manufacturer specifies a thermal stability of up to ±0.0007 °C and a uniformity of ±0.003 °C.
These baths are intended for the calibration of various types of temperature sensors, including platinum resistance thermometers (PRTs), thermistors, and thermocouples. They can also be used to maintain water triple-point cells, which serve as references in metrology.
Temperature control is achieved through a balanced stirring system designed to minimize thermal gradients within the fluid. Heating and cooling are regulated by computer-controlled solenoid valves, which adjust the system’s operation to maintain the specified thermal conditions.
Automation of Calibration Procedures
Models 7508, 7511, and 7512 can be integrated with Fluke Calibration’s 1586A Super-DAQ temperature scanner and MET/TEMP II software. This combination enables the automation of calibration sequences and data acquisition. The units feature USB and RS-232 connections and are also expected to be compatible with CalStudio software in the future.
An optional IR 2033 infrared cavity is available for the 7508 model, allowing for the calibration of infrared thermometers.
Maintenance and Design
Fluke has also enhanced the mechanical design of these baths to simplify maintenance. Agitation is provided by direct-drive motors—eliminating the need for pumps—and the system allows for the complete draining of the heat-transfer fluid. Furthermore, the units utilize CFC-free refrigerants.
Available in several configurations, the three models are designed for a variety of applications, ranging from the verification of industrial temperature controllers to the calibration of sensors and the maintenance of reference standards in metrology laboratories.
