VICI 150 Dynacalibrator - Manual (Page 5)

3
Installation
Connections
(refer to Figures 1 and 2)
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 150-C).
2. Turn on the calibrator with the main power switch on the rear panel.
The display will light up, indicating that the unit is on. The temperature
controller display will indicate the current chamber temperature.
3. Connect the carrier gas source (50 psi maximum pressure) to the carrier
inlet on the rear panel. The maximum recommended flow is 1.2 LPM.
4. Connect the SPAN OUTLET to your instrument.
Always leak check the entire instrument and all flow con-
nections, 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.
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.
The front panel displays the current chamber temperature and the control
status of the instrument, indicated by the PNL and TMP lights.
(Refer to
Figure 2 on page 4.) The chamber temperature can be set manually
through the controls on the front panel or remotely through RS-232 com-
munication.
(Refer to the chapter entitled “Serial Port Communications” on
page 7). After a temperature set point is entered by either method, it is
written to memory so that after a power failure the unit will return to the
condition previously established.
Chamber temperature will ramp up at the rate of approximately one degree
per minute. The observed standard deviation of one-second block average
readings of the chamber block temperature is 0.0005°C over one hour. This
is the stability as indicated by the RTD’s. The deviation in actual chamber
temperature is less than 0.002°C at set point, per degree change in ambient
temperature.