Alternate Set Point Selection (Sp2); Set Point Ramp Rate - Thermo Scientific BF51728 Installation And Operational Manual

| Main Controller: 1x8 & 5x16 Segment Programmable
Chapter 6
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6-30
330985H01

Alternate Set Point Selection (SP2)

1. Press the SCROLL
2. Press UP or DOWN
If SP2 is selected, then SPX beacon will appear on the HOME display indicating the
action of alternate set point in use.

Set Point Ramp Rate

The ramp rate SP.RAT is designed to reduce the heating rate that the furnace normally
exhibits. When SP.RAT is 'OFF', the furnace will operate at its maximum heating
capability. But if ramp rate feature is used, then the chamber is heated at any rate slower
than the maximum capability of the unit. To fine tune ramp rates, you may need to test the
furnace using loads that you intend to use in furnace application or with loads having
similar mass and thermal properties.
NOTE If ramp rate exceed the capability of the furnace unit, it will run the max 100%
output of heater capacity. If ramp rate value set less than 100%, furnace unit heater
output is reduced and furnace unit chamber gets heated slowly.
Complete the following steps to set the ramp rate units:
1. The ramp rate units can be set in seconds, minutes or hours.
2. Press the SCROLL
3. Press UP or DOWN
the display.
4. The new ramp rate unit is applied when the button is released and is indicated by a
brief flash of the display.
5. Press PAGE button to return to HOME display.
button from HOME display until SP.SEL is displayed.
button to select SP1 or SP2.
button until RAMPU is displayed.
button until the desired ramp rate unit is indicated on
1100°C Box Furnace