50-621 Kotron Sentinel Models 822, 832 and 842 RF Point Level Switches
16
2.4
Calibration—Multi Point
2.4.1 Program Path 1 — Configuration
The
SING
(single point) program is for single point alarm
applications and allows for proper calibration without level
change. The
MULT
(multi-point) program is for all pump
(wide differential) control, multiple relay applications,
and single point applications where an adjustable set point
is needed.
NOTE: Specific order of the configuration modes must be followed for
proper calibration of the Sentinel Level Switch. It is imperative
that the user select
CNFG
for the first calibration procedure.
Within the
CNFG
mode, the single or multi-point operation
must be selected. This selection affects the balance of the
configuration procedures and will significantly affect the
performance of the level switch if the modes of operation are
not followed.
STEP 1:
CNFG
(Configuration)
1. From the
RUN
mode, press the
ENT
and the
UP
arrow keys simultaneously (
) to enter the menu. The
display will read
CNFG
. Configuration is the first mode in
configuring the Sentinel. (Refer to the NOTE above).
2. Press
ENT
to confirm configuration selection and unit
will display
COMM
.
COMM
(Communications) refers to a
future RS-485 option of the Sentinel. Although selections
appear in the flowchart (screened area of diagram at left)
and in the software program, these features are not avail-
able at this time.
3. With
COMM
displayed, press the
DOWN
arrow key to
display
MODE
.
STEP 2:
MODE
(Mode)
1.
MODE
refers to the selection of a single point (alarm only)
or multi-point application of the Sentinel. Press
ENT
to display
MULT
.
2. Since multi-point use is desired, press
ENT
to return to
the
RUN
mode.
For
MULT
(multi-point) selection, the display will read
**NOT READY**
. Proceed to
Section 2.4.2, Program
Path 3 — Probe Calibration
.
NOTE: Although standard procedure is to calibrate the probe first
(eliminating the
**NOT READY**
message), relay parameters
can be set prior to calibrating the probe. This means full cali-
bration of all relays may be done indoors on a test bench. The
remaining
PRLO/PRHI
points can then be calibrated, after the
unit is installed.
ENT
ENT
ENT
ENT
ENT
RUN
CNFG
MULT
SING
MODE
COMM
TERM
ADDR
OFF
HOST
ENT
ENT
ENT
ENT
ENT