J-KEM Scientific Gemini User Manual - Section 3:
Section 3:
Operations Guide
3.1
Front Panel Description.
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20 (on back)
Figure 1
1.
Channel 1 Temperature Display. Shows temperature of the process connected to Channel 1 as the
default display. Shows set point temperature (i.e. desired temperature) when ‘*’ button is held in.
2.
Channel 2 Temperature Display. Shows temperature of the process connected to Channel 2 as the
default display. Shows set point temperature (i.e. desired temperature) when ‘*’ button is held in.
3.
Control Key (shown for Channel 2, but the same is true for Channel 1). When pressed, the display
shows the set point temperature. To decrease or increase the set point, press the ‘▼
’ key (4) or ‘▲
’ key
(5), while simultaneously pressing the control key. The set point appears as a blinking number in
the display.
4.
Down Key (shown for Channel 2, but the same is true for Channel 1). Lowers set point when ‘*’
button (3) is simultaneously pressed.
5.
Up Key (shown for Channel 2, but the same is true for Channel 1) Raises set point when ‘*’ button
(3) is simultaneously pressed.
6.
Channel 1 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 outlet (9) even when the controller is turned off. Take
appropriate precautions to avoid electrical shock.
7.
Channel 2 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 outlet (13) even when the controller is turned off. Take
appropriate precautions to avoid electrical shock.
8.
Channel 1 Temperature Sensor Input. Use the same type of sensor probe as the sensor plug installed
on the controller (see Section 3.7). The correct sensor type will have the same color plug as the
input (8) on the front of the controller.
9.
Channel 1 Power Outlet. Plug only 120 VAC devices into this outlet (see Section 3.2).
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