Aalborg OSS-2 Optical - Manual (Page 9)

6
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.
7. TROUBLESHOOTING
7.1 Common Conditions
Your Optical Sensor Switch was thoroughly checked at numerous quality control
points during and after manufacturing and assembly operations. It was carefully
packed to prevent damage during shipment. Should you feel that the instrument
is not functioning properly please check for the following common conditions first:
Are all cables connected correctly?
Are there any leaks in the installation?
Is the power supply correctly selected according to requirements? When several
devices are used a power supply with appropriate current rating should be selected.
Were the connector pinouts matched properly? When interchanging with other
manufacturers' equipment, cables and connectors must be carefully wired for cor-
rect pin configurations.