Sigma C4 manual Celsius mode

7.7.4 GT, GTF Go To Temperature

This command instructs the controller to control to the setpoint specified in the command. Bit 4 (setpoint reached) of the Status Byte is set when the chamber or platform has stabilized within .1 degree of the setpoint for 15 seconds. The command syntax is:

GT<space>[-]ttt.t<CR><LF>	Celsius mode
GTF<space>[-]ttt.t<CR><LF>	Fahrenheit mode
Example:
GT 125<CR><LF>	Celsius mode
GTF 180<CR><LF>	Fahrenheit mode

7.7.5 RA, RAF Ramp to Temperature

This command executes a ramping function. The operands of the command include a ramp temperature and a ramp time. The controller will execute a linear ramp from the current temperature to the specified temperature over the specified time period. Bit 4 (setpoint reached) of the Status Byte is set when the chamber or platform has stabilized within .1 degree of the setpoint for 15 seconds. The command syntax is:

RA<space>[-]ttt.t<space>hh<space>mm<CR><LF> Celsius mode RAF<space>[-]ttt.t<space>hh<space>mm<CR><LF> Fahrenheit mode

Where ttt.t is the final setpoint temperature

hhare hours to be used for the ramp

mmare the minutes to be used for the ramp

Example:
RA -55 2 15<CR><LF>	Celsius mode
RAF -55 2 15<CR><LF>	Fahrenheit mode

Ramps to -55/over 2 hours and 15 minutes

C4 Manual Rev 7.5.2 73