Conventional Max/min thermometers use a U-shaped tube. Although each side measures temperature the scales are inverted so that one side is used to record maximum and the other side minimum temperatures. Small steel markers inside the thermometers are moved as the temperature changes. As the temperature drops, the mercury in the left hand side pushes the marker upward and allows the minimum temperature to be measured. The marker is held in place by a magnet at the rear. As the temperature increases to maximum, the right hand side pushes the marker up ward so that the maximum can be measured. After use the markers are reset.
Other types of analog max/min thermometers are also available such as those using bi-metallic sensors.
Most types of digital thermometers are also able to record maximum and minimum temperatures.
Conventional Max/Min Thermometers in particular should not be subjected to impact such as being dropped as they are easily damaged or become inaccurate. The major result of impact is a separation in the mercury column.
MAX/MIN THERMOMETER APPLICATIONS
Max/Min Thermometers are important tools with a host of applications particularly in meteorology and horticulture. Although they are robust, users need to ensure their max/min thermometers remain in good working order and accurate.
MAX/MIN THERMOMETER CALIBRATION PROCEDURE
Max/Min Thermometers are first cleaned and then checked to ensure that they are not damaged. They are then examined for accuracy over the range of use in accordance with the International Temperature Scale of 1990 – ITS-90.
CMS uses calibrated state-of-the-art master equipment to verify that max/min thermometers are measuring within requirements.
Max/Min Thermometers are returned to our clients with a comprehensive calibration report within three working days of receipt.
MAKES OF MAX/MIN THERMOMETERS WE CALIBRATE
At CMS we calibrate a wide range of Max/Min Thermometers.
Makes include: – Brannan, Taylor Precision, Juliana and others.
RELATED EQUIPMENT CALIBRATION SERVICES YOU MAY WANT
You may find the following equipment calibration services helpful:
Calibration Management operates in accordance with ISO/IEC 17025:2005 “General Requirements for the Competence of Testing and Calibration Laboratories.”
Please do not hesitate to call Calibration Management on 08 8381 1322 if you have any questions related to equipment calibration – our friendly team will be pleased to assist you.