RIY
The Interface Solution Experts 19
If zero or span settings need to be changed, the unit
can be quick ranged using loop-power and the LCD.
(SW301-5 must be set to ‘on’ and SW301-6 set to 'off'
to perform quick ranging.) The front panel push
buttons and the LCD are used to set these values to
the desired settings.
The Push Buttons
During normal operation, the push buttons are used
to call-up and display the zero and full-scale settings.
Pressing either of the ZERO push buttons during
normal operation displays the most recent zero
setting. When either of the SPAN push buttons are
pressed during normal operation, the most recent full-
scale setting is displayed.
If a switch, or combination of switches, is changed
during normal operation, one of the front panel push
buttons must be pressed to acknowledge the new
settings. After making the desired switch setting
changes, pressing any one of the four push buttons
(or by cycling the power) causes the unit to reset and
the microprocessor will register the switch change(s).
The push buttons are also used in conjunction with
the LCD to perform quick ranging. (Refer to the
Calibration Section for the quick ranging procedure.)
Maintenance
The RIY is designed to operate reliably with a mini-
mum of field maintenance.
Field maintenance is limited to keeping the unit clean
and the wire terminals free of oxidation. Periodic
visual inspections should be performed to ensure the
unit is clean and the electrical connections are in
good condition. The frequency of these inspections is
based on the environment in which the unit is oper-
ated. But, it is recommended that inspections be
conducted at least once every six months.
If the RIY is mounted in an explosion-proof enclosure,
the unit will remain much cleaner for a longer period
of time than if it is openly exposed to changing
environmental conditions.
To perform a thorough calibration of the RIY, the unit
must be removed from the process loop and checked
out using the standard ranging method described in
the Calibration Section.
Should performance problems arise, or for technical
assistance, you should contact your local Moore
Industries’ Customer Service Department. In the
U.S.A. call toll-free 1-800-999-2900.
