The 5623B, precision freezer probe, is specially sealed from the sensing element to the end of the probe cable, preventing ingress of moisture when exposed to temperatures as low as -100 °C The entire assembly withstands temperatures over its full range (-100 °C to 156 °C), which is ideal for verification of freezers or autoclaves where a thermo-well isnt available The 5623B assembly can be fully immersed in fluids when the application may require use in a liquid bath The 5623B is available in a 6.35 mm (0.25 in) dia. _ 125 mm (6 in) long Inconel™ sheath With accuracy (that includes calibration uncertainty and short-term drift) of ± 0.05 °C over its full range, the 5623B is just right as a secondary standard for calibration of other process sensors