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Gas flow to the chamber is controlled by the Flow Regulator.
It is connected to the solenoid valve gas input. It should be
adjusted for a flow rate between 10 and 50 cfm. If the
chamber door is to be opened frequently then a higher flow
rate will reduce the humidity quicker. If the door is to be
opened occasionally then a lower flow rate will better
conserve the dry gas. If the flow rate is to be monitored then
a flow gauge can be installed between the valve output and
the chamber inlet. Ultimately, it is up to the user to determine
the optimum flow rate for the particular application.
3.1.4 Operation
The Model 5311 Dry Gas Control System is self-sustaining and
does not need any operator function to maintain the required
humidity level. Once the unit is operating and the proper flow rate
established no further user action is required.
Frequent on/off cycling of the solenoid valve may be indicative of a
poor chamber seal. The chamber should be thoroughly inspected to
determine where the leak(s) are occurring and the problem
corrected.
3.1.5 Calibration
The Model 5311 Controller is calibrated prior to leaving the factory.
There are no user adjustable controls. Calibration can be checked
by placing a calibrated humidity indicator in the chamber next to the
sensor to observe that the Controller is maintaining the humidity
within the specified range. If significantly out of tolerance or it just
does not work then the unit will have to be returned to the factory
for service.
NOTE:
If returning to the factory for repair or replacement, first obtain
a RMA number from ETS by calling 215-887-2196 Ext. 220.
3.1.6 Troubleshooting
The Model 5311 should provide trouble-free service. If a problem
with the system is suspected, it is recommended the fault be initially
isolated to either the Sensor, Control Unit or solenoid.
The following troubleshooting guide will assist the user in identifying
various possible problems:
1. No Power - Check power at the wall outlet.
