Section 3:
Operations Guide
3.1
Front Panel Description.
1
2
3
4
5
6
7
8
9
10
11 - Serial Communications (on back)
Figure 1
1.
Temperature Display. Shows temperature of the process as the default display. Shows set point
temperature (i.e. desired temperature) when ‘*’ button is pressed.
2.
Control Key. When pressed, the display shows the set point temperature. To decrease or increase
the set point, press the ‘
▼
’ key (3) or ‘
▲
’ key (4), while simultaneously depressing the control key.
The set point appears as a blinking number in the display.
3.
Lowers set point when ‘*’ button (2) is simultaneously pressed.
4.
Raises set point when ‘*’ button (2) is simultaneously pressed.
5.
Indicates that power is applied to the heater when lit.
6.
Temperature Sensor Input. Use the same type of sensor probe as the sensor plug installed on the
controller (see Section 3.5). The correct sensor type will have the same color plug as the
thermocouple input (6) on the front of the controller.
7.
Controller On/Off switch. For maximum display accuracy, turn on the controller 30 minutes prior
to use. WARNING: Due to the nature of solid-state relays, a small amount of output power (7.5
mA @ 120 VAC; 0.9 watts) is present at outlets 10 even when the controller is turned off. Take
appropriate precautions to avoid electrical shock.
8.
Power Reduction Circuit. Controls the computer that limits the maximum power delivered to the
heater. See Sections 3.6 and 4.1.
9.
Cooling Outlet. See Section 3.4.
10.
Heating Outlets. Two heating outlets are supplied for heaters having 2 plugs such as 12 & 22 liter
heating mantles. Plug only 120 VAC devices into these outlets. See Section 3.2.
11.
Optional Serial Port. For controllers equipped for serial communications, this RS232 port connects
to a PC for remote control and data acquisition. For units set up for multi-controller operation a RJ-
phone connector may also be on the back of the controller. See supplemental Serial
Communications Manual.
11
