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around the two corners of the calibrator are provided for airflow. The area
around the calibrator must be kept clear to allow adequate ventilation. The air
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flow is directed upward and as a result, can be extremely hot.
5.2 Front Panel
Figure 2 on page 14.
Controller Display - The digital display is an important part of the temperature
controller because it not only displays set and actual temperatures but also vari
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ous calibrator functions, settings, and constants. The display shows tempera
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tures in units according to the selected scale °C or °F.
Controller Keypad - The four button keypad allows easy setting of the
set-point temperature. The control buttons (SET, DOWN, UP, and EXIT) are
used to set the calibrator temperature set-point, access and set other operating
parameters, and access and set calibration parameters.
Setting the control temperature is done directly in degrees of the current scale.
It can be set to one-tenth of a degree Celsius or Fahrenheit.
The functions of the buttons are as follows:
SET – Used to display the next parameter in the menu and to store parameters
to the displayed value.
DOWN – Used to decrement the displayed value of parameters.
UP–Usedtoincrementthedisplayedvalue.
9140 Dry-well Calibrator
User’s Guide
14
Figure 2 9140 Front Panel