VICI Dynacalibrator 345 - Manual (Page 14)

10
Initial Set-Up
Basic Connections
1. Plug the power cable from the main power connector on the rear panel of the
calibrator to a 110 VAC power source (220 VAC with Model 340-C).
2. Remove caps from the SUPPLy INLET, SPAN OUT, and OVERFLOW VENT ports
on the rear panel. (Figure 3)
3. Connect the clean, dry, regulated supply gas source (25 psig min, 50 psig max)
to the carrier inlet on the rear panel. (Figure 3) The supply gas regulator must
be able to source the maximum dilution flow, which may be as high as 20 SLPM.
4. Connect the span outlet to your instrument.
Always leak check the entire instrument and all flow connec-
tions, particularly if toxic, corrosive, or flammable gas mixes
will be generated.
Use clean/dry air or N
2
to perform a pressure/decay test to
verify the leak integrity of the system before putting it into
service.
Remote Control Connections
When the front panel mode selector is in the REMOTE position, the operating
mode can be selected by providing contact closures between the two rear panel
remote control terminals, labeled C (common) and V1. The contact closures must
be capable of handling 24 VAC at 0.5 amps into an inductive load.
When C and VI are open, the Model 345 is in the ZERO mode. When V1 is closed
to C, the unit switches to the SPAN mode.
Chamber Temperature
Important Chamber Temperature Considerations
• If the chamber temperature exceeds the value set by the mechanical
temperature limit switch, the heater will automatically shut down and
a warning screen will appear on the touch screen controller.
• When the front panel door is removed, the heater automatically shuts down.
• Always refer to the separate instructions accompanying the permeation
tube(s) to make sure that the selected temperature is compatible with the
permeation tube(s) being used.
Once the gas connections are complete and the instrument has been leak tested,
turn on the inlet supply gas. Plug in the power the power cord and switch the
power on using the front panel switch. The touch screen panel provides the user
interface for setting and checking the permeation chamber temperatures.
1. Open the Manual screen (Figure 5) by touching the “Manual” tab on the left
hand side of the display.