Installation; Bath Environment; Dry-Out" Period; Bath Preparation And Filling - Fluke 7103 User Manual

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 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 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 1010-1.
5.3

Bath Preparation and Filling

The 7103 Micro Bath is not provided with a fluid. We suggest using Silicone 200.05
Dow Oil. Fluids are available from Hart Scientific and other sources. Although other
fluids may be used, the instrument may not meet the specifica 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 filling.
Fill the bath at room temperature (25°C) with silicon oil 200.05 to the second ring on
the basket. 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.
Note: 200.05 Silicon Oil expands 2.54 cm (1 inch) for a 100°C increase in
temperature.
Shop for Fluke products online at:
MyFlukeStore
www.
Installation
Bath Environment
1.877.766.5412
.com
13