50-608 Kotron Model 811 RF Point Level Sensor
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1.9 Calibration—Wide Differential
1.9.1 Set Point Adjustment Control
1. Turn on power to the instrument.
2. Remove housing cover.
3. Adjustments
3.1 Dip switch
a. Fail-safe
ON = high level
OFF = low level
b. Time Delay Direction
ON = delay on rising level
OFF = delay on falling level
c. Short Time Delay (0.5 to 7 seconds)
3 ON, 4 OFF
d. Long Time Delay (2 to 120 seconds)
3 OFF, 4 ON
NOTE: Switch positions 3 and 4 cannot be both ON or both OFF. One
must be ON the other OFF or the LED and relay will remain ON.
3.2 Potentiometers
a. Time Delay
• Allows continuous adjustment of time delay within
limits of DIP switch range chosen.
• Clockwise rotation increases delay.
b. Differential
• Allows continuous adjustment of pump or valve
control ON to OFF.
• Clockwise rotation increases differential. Full coun-
terclockwise rotation is the narrowest differential and
is used for alarm applications.
c. Coarse
• Allows continuous adjustment of setpoint over entire
range of the electronics (0 to 1000 pF).
• Clockwise rotation raises SETPOINT on probe.
d. Fine
• Allows precision adjustment of SETPOINT within
the limits of the COARSE SETPOINT adjusted
initially.
• Clockwise rotation raises SETPOINT on probe.
