Sigma C4 C3-5 Rel, 200 100c 392 148f, General Operation & Error Conditions, Startup Displays

3. GENERAL OPERATION & ERROR CONDITIONS

3.1 Startup Displays

3.1.1 Model Number and Firmware Version Number Display

The C4 identifies itself upon power up. It will display the model number for 1 second, then the firmware version number for 2½ seconds as follows:

c3-5	rel	7.5.2
c4	rel	7.5.2

3.1.2 Temperature Range Display

Each C4 controller is set at the factory for use with a specific device (chamber or platform). Because the controlled device was made to specific thermal limit specifications, and because constraining the operating range of the controller improves it’s accuracy, the controller to be used with each device is set to operate only within the range appropriate for that device. The setting of an operating range involves a number of internal adjustments and calibrations and the loading of specific control tables for that range. This setting can only be changed by Sigma Systems service personnel. We recommend that each controller be kept with the device for which it was originally configured.

However, if you find that it is necessary to move a controller to another device, it is important that you check to be sure that the controller that is moved is configured to operate in the appropriate range for the device it is to control. As of November, 1998, controllers are supplied for five ranges as follows:

-100/C to 200/C -100/C to 350/C -195/C to 300/C

-148/F to 392/F	-100/C to 300/C	-148/F to 572/F
-148/F to 662/F	-175/C to 400/C	-283/F to 752/F
-319/F to 572/F

To check the internal range setting of your C4 controller, turn the mode switch from OFF to any other position. During the 2½ seconds that the firmware release number is shown on the display, rapidly press <DISP/TEMP> three times. The internal range setting will be displayed for 5 seconds following the version display. An example:

200 - 100c	392 - 148f
(Celsius mode)	(Fahrenheit mode)

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