Sensor Alignment - Omega FLSW3400 Series User Manual

ALARM DIP SWITCH CONFIGURATION
LEFT
ALARM
SW1
SW2
SW3
SW4
Figure 6.1, Optical Sensor DIP Switch Configuration.
Each Optical Sensor Switch is shipped from the factory with the retro
reflective sensors aligned and does not require additional adjustment of the
focus distance. It may be necessary or desirable to perform realignment of
the sensors if the flow tube was replaced or reinstalled (see p. 6.2).
6.2 Sensor Alignments
6.2.1
Position the sensor on the side panel of the flow tube until the
upper small alignment screw becomes visible through the service
hole on the side panel.
6.2.2
Using a small 1/16 hex wrench unscrews the alignment screw for
1 – 2 turns in order to release the sensor. Note: Do not
completely remove the alignment screw!
6.2.3
Perform the same procedure (6.2.2) for the second alignment
screw at the opposite side of the side panel.
6.2.4
Position the sensor on the side panel of the flow tube until the
bottom small alignment screw becomes visible through the
service hole on the side panel.
6.2.5
Perform 6.2.2 and 6.2.3 for the bottom alignment screws. This will
release the sensor and will allow positioning it in the horizontal
plane in order to change the focus distance.
6.2.6
Adjust the flow rate through the flow tube until the float will cross
the red LED beam. Find the correct position of the sensor by
moving the sensor in the horizontal plane (toward or against the
flow tube) until the red LED light on the top of the sensor will go
off.
6.2.7
Carefully secure the two bottom and two upper alignment screws.
RIGHT ACTION WHEN SWITCH
ALARM
SW5 LED and Relay are On
(LATCH)
SW6 BUZZER is On (LATCH)
SW7 LED and Relay are On
momentary
SENSOR)
SW8 BUZZER is On momentary
(FOLLOW SENSOR)
6
IS" ON"
(FOLLOW