Cutout - Fluke 6050H User Manual

6050H Calibration Bath
User's Guide
9.8
38
S
Access proportional band
Proportional band setting
Pb=0.101C
To change the proportional band press "UP" or "DOWN".
D
Decrement display
Pb=0.060C New proportional band setting
To accept the new setting and access the cutout set-point press "SET". Pressing
"EXIT" exits to the secondary menu ignoring any changes just made to the pro-
portional band value.
S
Accept the new proportional band setting

Cutout

As a protection against software or hardware fault, shorted heater , or user er-
ror, the bath is equipped with an adjustable heater cutout device that shuts off
power to the heater if the bath temperature exceeds a set value. This protects
the heater and bath materials from excessive temperatures and, most impor-
tantly, protects the bath fluids from being heated beyond the safe operating
temperature preventing hazardous vaporization, breakdown, or ignition of the
fluid. The cutout temperature is programmable by the operator from the front
panel of the controller. It must always be set below the upper temperature limit
of the fluid and no more than 10 degrees above the upper temperature limit of
the bath.
If the cutout is activated because of excessive bath temperature then power to
the heater shuts off and the bath cools. The bath cools until it reaches a few de-
grees below the cutout set-point temperature. At this point the action of the cut-
out is determined by the setting of the cutout mode parameter. The cutout has
two modes — automatic reset or manual reset. If the mode is set to automatic,
the cutout automatically resets itself when the bath temperature falls below the
reset temperature allowing the bath to heat up again. If the mode is set to man-
ual, the heater remains disabled until the user manually resets the cutout.
The cutout set-point may be accessed within the secondary menu. Press "SET"
and "EXIT" to enter the secondary menu and show the heater power. Then
press "SET" twice to access the cutout set-point.
S E
+
Access heater power in secondary menu
Heater power in percent
12 Pct
S
Access proportional band