Fluke 9107 - Manual (Page 24)

Standard Insert Sizes
Model Number Size
2168 Blank insert
2169 1
16
¢¢ insert
2170 1
8
¢¢ insert
2171 5
32
¢¢ insert
2172 3
16
¢¢ insert
2173 1
4
¢¢ insert
2174 5
16
¢¢ insert
2175 3
8
¢¢ insert
2176 1
2
¢¢ insert
2177 5
8
¢¢ insert
2178 7
16
¢¢ insert
2179 9
16
¢¢ insert
6.4 Well Insulator (9107only)
The 9107 includes a well insulator made of white polymer foam that fits into
the opening above the block (see Figure 5). The well insulator has three
purposes:
1. Insulate the top of the block to minimize the vertical temperature gradi-
ent in the block.
2. Insulate the top of the block to prevent excessive heat from flowing into
or out of the block which may prevent it from reaching its minimum or
maximum temperatures.
3. Shield the top of the block from open air thus reducing the potential for
excessive water condensation on the block. Excessive water on the
block can cause corrosion over a long period of time. Water condensa-
tion that freezes expands and can damage the block.
For these reasons the 9107 must always have the well insulator installed when
it is operated with well temperatures below 25°C. The well insulator fits snugly
into the circular cavity just above the block. For best results do not push the
well insulator all the way down into the cavity. Instead, leave the top of the well
18 Hart Scientific
6 Parts and Controls