Fluke 6050H, Руководство пользователя, Страница: 22 / 68

6050H
User's Guide
14
“Dry-out” Period
W
Warning
Before initial use, after transport, and any time the instrument
has not been energized 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. If the product is wet or has been in a wet
environment, take necessary measures to remove moisture
prior to applying power such as storage in a low humidity
temperature chamber operating at 50
°
C for 4 hours or more.
Bath Preparation and Filling
The Model 6050H Bath is only intended to be used with salt. Bath salt is
available from Hart Scientific and other sources.
Bath salt is discussed in detail in the
Bath Fluid section.
Remove any access hole cover from the bath and check the tank for foreign
matter (dirt, remnant packing material, etc.).
Before filling the bath make sure the drain is well plugged (see Figure 4 and
Figure 5). When using heat transfer salt you must follow a special procedure in
filling and heating the bath because the salt is solid at lower temperatures. See
the Heat Transfer Salt section.
Disconnect power to the stirrer if at any time the material in the bath is solid and
prevents the stirrer from turning. Fill the bath with clean unpolluted salt. Fill the
bath carefully through the large square access hole to a level that will allow for
stirring and thermal expansion. Under-filling may reduce bath performance and
may possibly damage the bath heater. The salt should never exceed a height of
1/2” below the top of the tank. See Figure 4 for reference to the fluid level with
regards to the top of the tank and the lid of the bath. Carefully monitor the bath
fluid level as the bath temperature rises to prevent overflow or splashing. Use
caution to prevent bath fluid from spilling on the stir motor while filling.
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Caution
Underfilling may reduce bath performance and may possibly
damage the bath.
Probe
Inspect the bath controller probe (see Figure 4). It should not be bent or
damaged in any way. Reasonable caution should be used in handling this probe
as it contains a precision platinum sensor and is mechanically shock sensitive.
Dropping, striking, or other physical shock may cause a shift in resistance in the
probe resulting in diminished bath accuracy. If damaged, the probe can be
replaced. Contact the factory.
Insert the probe into the 1/4 inch probe hole at the top left side of the bath lid.
The tip of the probe must be well immersed in the fluid. The probe connector is
plugged into the rear of the bath into the socket labeled “PROBE”.