18
5. Connect an earth ground wire to the nearest green ground
screw (not shown in illustration).
6. Connect the positive supply wire to the (+) terminal and the
negative supply wire to the (-) terminal.
7. Replace the cover of the transmitter.
2.6
Configuring the Transmitter
The Radar transmitter comes factory-calibrated and can be
configured in minutes for specific applications.
Before configuring the transmitter, collect the operating
parameters information. Then, power-up the transmitter on
the bench and follow through the step-by-step procedures
for the menu-driven transmitter display. Information on
configuring the transmitter using a HART communicator is
given in Configuration Using HART (Section 2.7).
2.6.1 Operating Parameters
Some key information is needed to configure the Radar
transmitter. If necessary, complete the configuration infor-
mation table in Section 1.1.2.
2.6.2 Setting Up for Shop Configuration
The Radar transmitter can be configured at a test bench by
connecting a 24 VDC power supply directly to the trans-
mitter terminals. The connections are illustrated in the
accompanying diagrams. An optional digital multimeter is
shown if current measurements are desired.
When using a HART communicator for configuration, a
minimum 250
Ω
line load resistance is required. See the
HART communicator manual for more information.
2.6.3 Transmitter Display and Keypad
The R82 transmitter has a local user interface consisting of
a 2-line
¥
16-character liquid-crystal display (LCD) and
4-push-button keypad. All transmitter measurement data
and configuration information is shown in the LCD.
The transmitter default display is the measurement screen.
It cycles every 2 seconds to display *STATUS*, *LEVEL*,
*ECHO STRENGTH*, *%OUTPUT*, *LOOP CUR-
RENT* and *LOCAL TAG* information. The transmitter
defaults to this display after 5 minutes if no keystrokes are
sensed. You can also access each of these screens individual-
ly. The display will not return to the default screen if left in
one of these screens. For example, the device can be left to
display only LEVEL indefinitely if left in this screen.
58-610 Model R82 Radar Transmitter
Ground
Launcher
Adjustment
(+
)
(-)
Figure 22
Display and Keypad
