J-KEM Scientific Gemini User Manual - page 12
10.
Channel 2 Power Level Selection. This button is the interface to J-KEM’s patented power control
computer which limits the maximum power delivered to the heater. See Sections 3.6 and 4.1.
11.
Channel 1 Power Level Selection. This button is the interface to J-KEM’s patented power control
computer which limits the maximum power delivered to the heater. See Sections 3.6 and 4.1.
12.
Channel 2 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 (12) on the front of the controller.
13.
Channel 2 Power Outlet. Plug only 120 VAC devices into this outlet (see Section 3.2).
14.
Indicates the present power level of Channel 1 (see Section 3.6).
15.
Indicates the present power level of Channel 2 (see Section 3.6).
16.
Displays the time remaining in the 100 Hr. timer for Channel 1.
17.
Indicates whether the timer has turned power ON or OFF at Channel 1's outlet. This LED is lit
when the timer section has turned power ON at outlet (9) and off when the timer has turned power
OFF at outlet (9).
18.
This switch, in conjunction with the timer, determines when power is present at outlet (9). See
Section 3.5. The label ‘When time = 0 turn outlet:’ has reference to the time remaining in display
(16).
19.
Increases or decreases the time remaining in the timer when pressed.
20.
Optional 9-pin serial connector. 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-11 phone connector may also be on the back of the controller.
3.2
Heater Restrictions. Each channel of the controller can individually deliver up to 10 amps of current at
120 VAC, but the combined total current from Channels 1 & 2 can not exceed 15 amps. These current
ratings are limited to resistive loads (heating mantles, hot plates, ovens, etc.). Use only resistive loads
that are safely operated at 120 VAC and require less than 10 amps or damage to the controller and a
safety hazard may result.
•
Do not plug oil baths into your controller. Oil baths are not 120 VAC devices and
become a fire hazard unless properly connected to the controller. (See Appendix for
an application note describing the use of oil baths with this controller). Ask about J-
KEM’s new 400 series controllers for use with oil baths.
•
Devices other than resistive loads can be used with your controller but certain restrictions
apply.
Device Type
Restrictions
Comments
Incandescent lamps
Infrared heaters
700 watts
≤
Set the output power level to
the > 2 L setting.
Inductive loads:
* solenoids
* transformers
* motors
4 amps; 480 watts
≤
The controller must be
programmed for this use.
Request application note AN5.
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