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NTRODUCTION
The best way to familiarize you with your new HHTFO thermometer is, of course, to use it! This chapter
shows you how to prepare your unit and do some initial measurements. The detailed instructions are given in
the next Chapter.
Your new HHTFO comes calibrated and ready to use. If the unit has not been used already, install fresh AA
alkaline or rechargeable batteries. This figure shows the main view of the HHTFO, along with the top and
bottom views.
3.1 Installing batteries
You will find the battery access port at the bottom of the HHTFO. Insert 4 fresh “AA” batteries, or connect the
supplied 6VDC universal power supply. If using rechargeable batteries, make sure they are completely
charged. The following illustration shows the proper orientation of the 4 AA batteries:
6DC power input
COM port in/out
Probe input
SD flash card
Battery access port
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