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General Operation
Changing Display Units
General Operation8
Changing Display Units8.1
The 7103 can display temperature in Celsius or Fahrenheit. The temperature units are
shipped from the factory set to Celsius. To change to Fahrenheit or back to Celsius
there are two ways:
Press “SET” and “UP” simultaneously. The display units are changed.1.
or
Press the “SET” key three times from the temperature display to show1.
Un = C
Press the “UP” or “DOWN” key to change units.2.
Press “SET” to store changes.3.
Switching to 230V Operation8.2
To use 230 V, plug in the appropriate power cord into the unit. The “~” sign should
always show in the PEM fuse window.
Note: Use 5 amp fuses for both 115 V and 230 V.
8.3 Bath Fluid
Many fluids work with the 7103 bath. Choosing a fluid requires consideration of many
important characteristics of the fluid. Among these are temperature range, viscosity,
specific heat, thermal conductivity, thermal expansion, electri cal resistivity, fluid
lifetime, safety, and cost. Hart Scientific recommends using Silicone 200.05 Dow Oil.
If the viscosity becomes to great, the stirrer may not function.
Temperature Range8.3.1
One of the most important characteristics to consider is the temperature range of the
fluid. Few fluids work well throughout the complete temperature range of the bath.
The temperature at which the bath is operated must always be within the safe and
useful temperature range of the fluid. The lower tempera ture range of the fluid is
determined by the freeze point of the fluid or the tem perature at which the viscosity
becomes too great. The upper temperature is usually limited by vaporization,
flammability, or chemical breakdown of the fluid. Vaporization of the fluid at higher
temperatures may affect temperature stability because of cool condensed fluid dripping
into the bath from the lid.
Shop for Fluke products online at:
1.877.766.5412
www.MyFlukeStore.com
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