7
The display of the calibrator, shown in Figure 3, is divided into three
main sections: the upper display, the lower display, and the menu
bar.
The upper display is used for measuring dc voltage, dc current with
and without loop power, and pressure.
The lower display can be used for both measuring and sourcing.
The menu bar is used to setup both the upper and the lower display
to perform the desired function.
Table 3 explains the different parts of the display:
Table 3: Display Functions
No.
Name
Description
1
Primary
Parameters
Determine what parameter is going to be mea-
sured or sourced.
The available options for the upper display
are:VOLTS IN, PRESSURE, mA IN, and mA LOOP.
The available options for the lower display
are:VOLTS, TC
(thermocouple), RTD, FREQ (frequency), PULSE,
PRESSURE, mA, and mA 2W SIM.
2
Input/Output con
-
trol
Switches the lower display between input mode
(read), and output mode (source).
3
Additional Settings Available only for TC (thermocouple), and RTD
measurements. For TC this setting turns the CJC
(Cold Junction Connection) on and off.
For RTD measure [RTD IN], this setting sets the
number of wires used in the measurement (2-wire,
3-wire, or 4-wire)
4
Span Indicator
Available only for mA and mA LOOP. Shows where
in the preset span the measured value falls. Fixed
for mA at 4 (0%) and 20 (100%).
5
Units
Shows what unit the measurement or source
value is in. Available options are for RTD and TC
(°C or °F), and for FREQ and PULSE (CPM, Hz, or
KHz)
6
Sensor Types
Allow for measurements to be made for different
types of RTDs and TCs. All types are shown in the
Specifications. Also, displays the amplitude of the
pulse and frequency source, and pressure units.
7
Numeric Displays
Display the numeric values of the signal being
measured, or sourced. An “OL” reading indicates
an out of range or overload condition.
Summary of Contents for PCL1200
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