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8.3 Replacing the Emitter and Receiver Modules
Notes.
• The emitter and receiver modules are matched
during manufacture. If either module fails, return
both to the Company for repair/replacement.
• Refer to the Warnings and Notes in Sections 8.1 and
8.2.1 before removing the modules from the flowcell.
• Under
circumstances dismantle the modules.
NO
1) Isolate the system from the power supply.
2) Disconnect the cables from the emitter and receiver
modules.
3) Refer to Fig. 8.1 (7320 100 Low Ranger Sensor) or Fig. 8.2
(7320 200 High Range Sensor) and remove the emitter and
receiver modules.
4) Refer to Fig. 8.1 (7320 100 Low Ranger Sensor) or Fig. 8.2
(7320 200 High Range Sensor) and fit the new modules.
5) Refer to Fig. 6.11 and reconnect the emitter and receiver
cables.
6) Restore the power supply to the system and allow to warm
up for five minutes.
7) Adjust the emitter brightness – see Section 8.4.
8.4. Adjusting the Emitter Brightness
1) Fill the flowcell with high purity water.
2) Select the
TEST/MAINTENANCE
3) Scroll to the
Org. Totals
sensor.
4) Remove the small plug on the left hand side of the emitter
module.
5) Using a long, small-bladed screwdriver, adjust the multi-turn
potentiometer until
Span A
Note. If this value cannot be obtained, contact the
Company.
6) Check that the
values in the
Span A
frames are between 200 and 250.
Note. If these values are outside the limits, contact the
Company.
7) Refit the plug removed at step 4.
8) Calibrate the sensor – see Section 4.2.
9) Return the system to normal operation.
8 SENSOR MAINTENANCE
Page (see Section 5.9).
frame (page 28) for the relevant
(or
) value reads
Span B
100
and
Org. Peak
Ref. Peak
±10.
55
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