Sentry 200 Owner's Manual page 7

Sentry
LIQUID LEVEL GAUGE MODEL 200 or 200C
OWNER MANUAL
the alarm may "hunt". Set the audio alarm on or
off. If no LOW LEVEL ALARM is required, set the
trip and release values to zero and the audio to
off.
3.7.4. (Model 200C Controller). Program any of the four
CONTROL RELAYs by setting the desired action,
or polarity, for the relay – normally open or
normally closed. Set the trip point at the desired
depth. This will activate the relay closed (or open,
depending upon polarity). Set the release point
which activates the relay open (or closed,
depending upon polarity). Setting the release
point above the trip point is a PUMP UP
configuration. Setting the release point below the
trip is a PUMP DOWN configuration. The four
relays can be set independently for any span
throughout the entire range of the sensor to
operate pumps, aerators, low or high level
cutouts, remote alarms, security systems, auto
dialers or other control applications. The relay
status is shown on the front bottom of the display.
Relay 1 status is shown by the right LED. The
position of the LED corresponds to the positions
of the relay wiring terminations on the screw
terminal plug below.
3.7.5. Set the brightness of the LED display to 1, 2, 3
or 4 where 4 is the brightest.
3.7.6. If installing another sensor, other than the
original factory supplied, program the length of
the bottom and top sensor. Lengths are entered
in one foot increments up to 8 feet--the maximum
length of an individual sensor. When two sensors
are used, enter each of their lengths. Example –
a 5 ½ foot sensor would be entered as 6 feet.
3.7.7. If a different display than the factory setting of
depth in feet and decimals of a foot is desired,
set the display units to meters or percent of the
sensor length. Volume will be available in the
future for specific tank configurations.
REV 1.7
SEPT08
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