Cutout; Figure 11 Cutout Settings Menu - Fluke 917X Series Technical Manual

Controller operation
Main Menu
5.2.1.4

Cutout

Figure 11 CUTOUT SETTINGS menu

The Cutout (CUTOUT SETTINGS) menu allows the user to set the cutout temperature
and to reset the cutout from the display. The cutout temperature is programmable by
the operator from the front panel of the controller. As a protection against software or
hardware fault or user error, the calibrator is equipped with the adjustable cutout de-
vice that shuts off power to the heat source if the well temperature exceeds a set value.
This feature protects the instrument and probes from excessive temperatures.
If the cutout is activated because of excessive well temperature, power to the heat
source shuts off and the instrument cools. The heat source remains in cutout mode
and active heating and cooling is disabled until the user manually resets the cutout. If
the over-temperature cutout has been triggered, the instrument displays "CUTOUT"
above the duty cycle bar graph, which indicates a cutout condition. The instrument
remains in cutout mode until the temperature is reduced and the cutout is reset. The
well temperature must drop a few degrees below the cutout set-point before the cutout
can be reset.
For safety reasons, the cutout only has one mode — manual reset. Manual reset mode
means the cutout must be reset by the operator after the temperature falls below the
set-point.
To quickly access the reset cutout function press the "EXIT" key from the main
screen.
CUTOUT
The Cutout parameter can be set to any temperature over the range of the instrument.
The cutout should be set within 5-10° of the safety limit of the equipment being cali-
brated or used with the Metrology Well.
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