Fluke 9118A User Manual page 14

9118A
Users Manual
•
Be careful with thermometer probes. Do
not drop, stress, or let them become too
hot.
•
Do not operate the Product without the
control probes correctly connected and put
into the furnace. The furnace does not
operate correctly without the control
probes.
•
Make sure the main probe and zone probe
are connected to the correct connector.
•
Turn off the furnace when a mains supply
power fluctuation occurs. Turn on the
furnace only when the mains power is
stable.
•
Make sure that all reference sensors used
with the furnace are specified for the
temperature range of the furnace.
•
Do not disconnect the Product from the
mains while the furnace temperature is
above 80 °C.
•
Do not attempt to push the block into the
furnace. The isothermal block expands as
the furnace heats due to thermal
expansion. It will extend beyond the front
of the furnace at high temperatures. This is
normal.
4
•
Remove the isothermal block and rear plug
prior to transporting the furnace. The
ceramic furnace tube is fragile and can be
damaged by the block.
•
To prevent the probe under test from
getting stuck in the isothermal block due to
different rates of thermal expansion, allow
a clearance of at least 0.4 mm between the
outer diameter of the probe and the hole of
the isothermal block.
•
Never introduce any foreign material into
the probe hole of the isothermal block.
Fluids, etc. can leak into the Product and
cause damage.
•
Minimize vibration in the calibration
environment.
•
The furnace can be used with or without an
isothermal block installed. Unique
calibration parameters are necessary for
each mode of operation.
•
Before operating the furnace, select the
appropriate mode of operation in the
calibration menu (see Furnace Setup
Menu). If necessary, a calibration for the
new mode of operation may be required.