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•
DO allow sufficient time for the thermometer to stabilize before making
measurements. This allows for the best accuracy.
•
DO use the correct drive current with the thermometer to prevent error
in temperature or resistance. Hart Scientific recommends 1mA.
•
DO anneal the 5608 thermometer at 500°C and the 5609 thermome-
ter at 600 to 661°C for 12 hours if they become oxidized.
•
DO use the protective shipping box or case provided or other protec-
tion when the thermometer is not in use.
•
DO NOT subject the thermometer to any physical shock or vibration.
•
DO NOT use pliers or other devices to squeeze the sheath. This action
can permanently damage the PRT.
•
DO NOT subject the thermometer to temperatures above the highest
specified operating temperature.
•
DO NOT expose the thermometer’s handle or cables to extreme tem-
peratures. The temperature limits of the handle are: –50°C to 200°C
•
DO NOT submerge the handle or cable in liquids.
•
DO NOT screw a clamp down so tight that it dents the sheath. This can
permanently damage the PRT.
5608/5609
User’s Guide
12
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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