Fluke 6050H, Руководство пользователя, Страница: 46 / 68

6050H
User's Guide
38
Stir Set-point
The stir set-point allows setting of the temperature above which the stir motor
activates when the stir activation is set to automatic.
To access the paramter press “SET” from the stir activation parameter. Set-point
mode selection parameter is indicated by,
Stir motor activation set-point parameter
Press “SET” to access the parameter value.
Stir motor activation set-point
Press “UP” or “DOWN” to change the value and then “SET” to enter the new
value.
Heat Up Power
Note
This section applies to controller parameters, not to High/Low setting
of the front panel heater switch.
The Heat Up Power or “soft start” feature allows heat transfer salt to be melted in
the bath without overheating the heaters. When salt solidifies it shrinks leaving
gaps between the solid salt and the sides of the bath. Applying full power to the
heaters while the salt is solid can cause the heaters to overheat since there is
poor heat conduction between the walls of the bath and the solid salt. The Heat
Up Power feature prevents the heaters from overheating by limiting the power.
When the Heat Up Power is set to ‘Low’, the heaters operate at 25% power until
the temperature reaches 200°C and is completely melted. While the solid salt is
being heated the control LED flashes. The heater switch setting should be set to
HIGH enabling all the heaters to provide adequate power to melt the salt and to
melt it as quickly as possible. Once the temperature exceeds 200°C, the heaters
operate at full power again and the control LED glows red constantly until the set-
point temperature is reached. The Heat Up Power always defaults to ‘Low’ when
the bath is switched on.
The heat up power option is indicated by,
Heat up power option
Press “SET” to access the parameter value.
Low power heat up mode for heat transfer salt
High power heat up mode
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