Emerson Rosemount Apex User Manual

Reference Manual
00809-0100-4731, Rev FA
April 2003
APEX
™
and APEX Sentry
™
Radar Gauge
3-18
Connections and
Hardware
The HART Communicator exchanges information with the APEX and APEX
Sentry Radar Gauges from the control room, the instrument site, or any wiring
termination point in the loop. The HART Communicator should be connected
in parallel with the gauge. Use the loop connection ports on the rear panel of
the HART Communicator. The connections are non-polarized.
Do not make connections to the serial port or NiCad recharger pack in an
explosive atmosphere.
Using a Model 275 HART Communicator
NOTE
Remember, when using a Model 275 hand held communicator, you must
send the data before configuration changes will take effect.
NOTE
As a matter of routine, shut off the APEX Radar Gauge and all other
equipment before you enter the tank.
To configure the APEX and APEX Sentry Radar Gauges to report LEVEL
(analog output is linear to level) with the gauge wired as in Figure 3-6 on
page 3-10, connect the Model 275 as shown.
Set Transmitter Units Set transmitter units:
•ft
•m
•in
•cm
•mm
Set Reference
Gauge Height
When setting the Reference Gauge Height, keep in mind that this value is
used for all measurements performed by the APEX. (Refer to “Setting the
Reference Gauge Height” on page 3-12.)
Set 4 and 20 mA Points When setting the range values, it is possible to enter the values directly, or to
use actual values. Keep in mind that the 20 mA point must be at least 19.6
inches below the flange face.
NOTE
The primary variable must be set to level (factory default).
Volume Configuration
(APEX Radar
Gauge Only)
To configure the gauge to report ACTUAL VOLUME (analog output is linear
with volume) set transmitter units and Reference Gauge Height in level units
as detailed above. The Reference Gauge Height must be set in linear units for
the gauge to be able to read volume.
Refer to “Safety Messages” on page 3-1 and for more information.
HART Comm 1, 3, 2, 1
HART Comm 1, 3, 4
HART Comm 1, 3, 3

Emerson Rosemount Apex Specifications

General

Brand	Emerson
Model	Rosemount Apex
Category	Measuring Instruments
Language	English