Fluke 6055 User Manual page 24

6055 Calibration Bath
User's Guide
6.2
Boost Heating Boost Heating
Indicator Switch
2
BOOST
HEATER
OFF
ON
POWER
OFF
Power
1
Indicator
Figure 2 Power panel
20
Power panel
The Power Panel (Figure 2) controls include: 1) the power switch and indicator,
2) the boost heater and indicator, 3) the mode select switch and indicators, 4)
the control heating select switch, and 5) the drift adjust control.
1) The "ON/OFF" power switch powers up the bath. The switch is a DPST
type that opens both legs of the ac mains power source. A red indicator
light shows that power is on.
2) The boost heating provides an additional 900 watts for rapidly changing
between temperatures. The boost heating indicator shows whether the
boost heater is on or off. The boost heater is powered through the tem-
perature controller triac to prevent exceeding the desired set temperature.
The boost heater indicator flashes when the set temperature has been
reached as a reminder to turn it off for control.
3) The mode select switch selects between the Temperature Control and
Temperature Drift modes. The indicator light shows which mode is func-
tioning. The Temperature Control position selects the temperature con-
troller panel. In Temperature Drift mode, the heater control is via the
Drift Adjust control and the heating select switch.
4) The control heating switch selects the control heater power positions; off
through 4. Select the lowest reasonable value for normal control condi-
Mode Select
Switch
3
Power Heating
4
Switch Switch
Temperature Drift
Mode Indicator
TEMPERATURE DRIFT
MODE SELECT
TEMPERATURE CONTROL
20
LOW
HEATING
HIGH
Temperature Control
Mode Indicator
Drift Adjust
Control
5
DRIFT ADJUST
50
40 60
30
10
0 100
PERCENT
70
80