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13
Installation
Bath Environment
Installation 5
Caution: READ SECTION 6 ENTITLED BATH USE before placing the bath in
service. Incorrect handling can damage the bath and void the war ranty.
Bath Environment5.1
The 7103 Micro Bath is a precision instrument which should be located in an
appropriate environment. The location should be free of drafts, extreme temperatures
and temperature changes, dirt, etc. The surface where the bath is placed must be level.
Because the bath is designed for operation at high temperatures, keep all am mable
and meltable materials away from the bath. Although the bath is well in sulated, top
surfaces do become hot. Beware of the danger of accidental uid spills. The bath
should be placed on a heat-proof surface such as concrete with plenty of clear space
around the bath.
If the bath is operated at high temperatures, a fume hood should be used to re move any
vapors given off by hot bath uid.
“Dry-out” Period5.2
Before initial use, after transport, and any time the instrument has not been en ergized
for more than 10 days, the bath will need to be energized for a “dry-out” period
of 1-2 hours before it can be assumed to meet all of the safety requirements of the
IEC 1010-1.
Bath Preparation and Filling5.3
The 7103 Micro Bath is not provided with a uid. We suggest using Silicone 200.05
Dow Oil. Fluids are available from Hart Scientic and other sources. Although other
uids may be used, the instrument may not meet the specica tions detailed in Table 2
when Silicone 200.05 Dow Oil is not used.
Fluids are discussed in detail in Section 8.3.
Remove the access lid from the bath and check the tank for foreign matter (dirt,
remnant packing material, etc.). Thoroughly dry the inside of the well with pa per
towels before lling.
Fill the bath at room temperature (25°C) with silicon oil 200.05 to the second ring on
the basket. Under-lling may reduce bath performance. The uid should never exceed
a height of 1.9 cm (0.75 inches) below the top of the bas ket. Carefully monitor the
bath uid level as the bath temperature rises to pre vent overow or splashing. Remove
excess hot uid if necessary with caution.
Note: 200.05 Silicon Oil expands 2.54 cm (1 inch) for a 100°C increase in
temperature.
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