Reference Manual
00809-0100-4731, Rev FA
April 2003
APEX
™
and APEX Sentry
™
Radar Gauge
2-33
POWERING UP Be sure to make all of the APEX or APEX Sentry Radar Gauge connections
before applying power to the system. Check the connections for the power to
the gauge and the power supply for the 4–20 mA loop to be sure they are
correct. Make sure the main power to the gauge is off and the lines to any
other external power source are not powered while wiring the gauge.
Connect the gauge to either 18–36 V dc or 90–250 V ac 50/60 Hz power,
depending on the model selected.
Power consumption by the gauge is approximately 8 watts.
After connecting power, configure the radar gauge using the APEX integral
display (APEX Radar Gauge only), the hand-held Model 275 Hart
Communicator (APEX and APEX Sentry Radar Gauges), or the Radar
Configuration Tools (APEX and APEX Sentry Radar Gauges). The remainder
of this section provides information about field configuration using the optional
integral display.
NOTE
To ensure long life for your radar gauge, and to comply with hazardous
location installation requirements, tighten covers on both sides of the
electronics housing to achieve metal-to-metal contact.
Refer to Safety Messages on page 2-2 for more information.
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