ThermoWorks 9103 HART SCIENTIFIC FIELD DRY-WELL TEMPERATURE CALIBRATORS - Manual (Page 18)

5 Parts and Controls
The user should become familiar with the instrument and its parts as described
below.
5.1 Back Panel
The back panel is shown in Figure 1 on page 14.
Power Cord – At the rear of the calibrator is the removable power cord inlet
that plugs into an IEC grounded socket.
Power Switch - The power switch is located on the power entry module
(PEM). The PEM also houses the voltage selector.
Serial Port – A DB-9 male connector is present for interfacing the calibrator to
a computer or terminal with serial RS-232 communications.
Fan – The fan inside the calibrator runs continuously when the unit is being
operated to provide cooling for the instrument. At high temperatures or during
heating, the fan slows down. Slots at the top and 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 airflow is directed up.
5.2 Front Panel
The front panel is shown in Figure 2 on page 15.
Controller Display - The digital display is an important part of the temperature
controller because it not only displays set and actual temperatures but also dis-
plays various calibrator functions, settings, and constants. The display shows
temperatures 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 and to access and set other oper-
ating parameters and 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 or parameter.
UP – Used to increment the displayed value or parameter.
13
5 Parts and Controls
Back Panel