Chapter 5 – Limit Controller
Page 6-2 TestEquity 1007C Temperature Chamber
Purge Operation
The Purge
mode is enabled through Event 2 (Digital Output 2) in the F4 Controller.
NOTE: The Modbus register to program Digital Output 2 in static set point mode is 2010.
NOTE: Remember to set Digital Output 2 to On in all programmed steps when the you want to
use the purge.
The Event Outputs are accessed from the DigitalOut prompt on the Main Page in static set point
mode, and the DIGIT OUT prompt in the Profile programming mode.
Adjusting the Purge Flow
A flowmeter is located on the front panel to adjust the flow of purge gas into the chamber. The
flowmeter has a scale, calibrated in SCFM. The flow of purge gas should be adjusted to the
minimum amount required to obtain the desired drying in the chamber for your particular
conditions. A suggested starting setting is 4 SCFM.
Relief Vent
Excess pressure in the chamber workspace is vented through a pressure-relief check-valve,
which is located on the top of the chamber. There is no need to vent this externally.
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