The standard method ASTM D445 for Kinematic viscosity, used by the PAC HVM 472, HVU 481 and HVU 482 viscometers was updated so that all MIG thermometers are excluded from the test method and can be replaced by a digital alternative. This is now also mentioned in the ASTM D8164 Standard Guide for Digital Contact Thermometers for Petroleum Products, Liquid Fuels and Lubricant Testing.
Important is that this alternative digital thermometers should work within specifications of the standard method used by the instrument. A calibration of the temperature measuring chain as part of an ISO17025 verification of the analyzer is the only way to fully guarantee proper correspondence with the working method.
Don’t hesitate to contact firstname.lastname@example.org if you have any questions about these new regulations.