Vici 150 Dynacalibrator Manual do Utilizador descarregar pdf (Página 5)

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

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.

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