Note: Time constant is the time required to reach 63.2% of the new reading. To determine how long it will take to reach 99% of the new reading multiply the time constant by five. Note: the temperature range is for the probe tip only. The handle material may be affected if the probe is rated higher than the handle depending on exposure time, application, and handle material. ABS handles are rated to 220F (104C); PVC handles are rated to 200F (93C); Stainless Steel handles are rated at 450F (232C); Mini Connectors are rated to 392F (200C).