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5
Installation
Caution: READ SECTION 6 ENTITLED BATH USE before placing the bath in
service. Incorrect handling can damage the bath and void the war ranty.
5.1
Bath Environment
The 7102 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 flam 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 fluid 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 fluid.
5.2
"Dry-out" Period
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 61010-1.
5.3
Bath Preparation and Filling
The 7102 Micro Bath is not provided with a fluid. Various fluids are available from
Hart Scientific and other sources. Depending on the desired temperature range, any of
the following fluids, as well as others, may be used in the bath:
Water (distilled)
●
Ethylene glycol/water
●
Mineral oil
●
Silicone oil
●
Fluids are discussed in detail in Section 8.3, Bath Fluid on page 21.
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 filling.
Fill the bath with clean unpolluted fluid. Under-filling may reduce bath performance.
The fluid should never exceed a height of 1.9 cm (0.75 inches) below the top of the
bas ket. Carefully monitor the bath fluid level as the bath temperature rises to pre vent
overflow or splashing. Remove excess hot fluid if necessary with caution.
Installation
Bath Environment
13
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