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The large LCD displays the ambient O2 concentration.
The SEU has the “DIAG”, “O2 AL1(Depletion)”, “O2 AL2(Depletion)”,”O2 AL3(Depletion)”, “O2
AL1(Enrichment)”, “O2 AL2(Enrichment)”,”O2 AL3(Enrichment)”, “O2 CALI”, “RCFS” function. The
“DIAG” function executes communication tests between the SEU and RDU. The user can do the
calibration under the “CALI” mode when necessary. If data setting is done incorrectly, the user can use
the “ReFactSet” mode back to the original factory setting.
There are “O2 AL1(Depletion)”, “O2 AL2(Depletion)” “ O2 AL3(Depletion)” three alarm levels for
O2 Depletion, these alarm levels are adjustable.
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•
•
•
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The AL1
(Depletion) of O2 is with parameter 18.0%
,
18.5%
,
19.0%
,
19.5%
,
20%,
the default
AL1 is
19.0%.
The AL2
(Depletion) of O2 is with parameter 16.0
,
16.5%
,
17.0%
,
17.5%; the default AL2 is
17.0%.
The AL3
(Depletion) of O2 is
12%.
When the RAD-0002 Monitor detects O2 value lowers than the O2 AL1(Depletion) , operate Alarm 1
LED, Fault LED ,Relay 1, Audible, Strobe(if exist), till RESET on SEU regardless the rise of O2 level.
When O2 levels continue decaying, and below O2 AL2(Depletion): operate Alarm 1 LED, Alarm2 LED,
Relay 1, Relay2, Audible, Strobe, Fault LED, till RESET on SEU regardless the rise of O2 level.
When O2 levels continue to decay, and below O2 AL3(Depletion): operate Alarm 1 LED, Alarm2 LED,
Alarm3 LED, Fault indicator LED, Relay 1, Relay2, Relay3 Audible, Strobe, till RESET on SEU
regardless the rise of O2 level.
There are “O2 AL1(Enrichment)”, “O2 AL2(Enrichment)” “ O2 AL3(Enrichment)” three alarm
levels for O2 Enrichment, these alarm levels are adjustable.
•
The AL1
(Enrichment) of O2 is with parameter 22.0, 22.5, 23.0, 23.5. (Default setting
22.0%.)
•
The AL2
(Enrichment) of O2 is with parameter 24.0, 24.5, 25.0. (Default setting 24.0%.)
•
The AL3
(Enrichment) of O2 is with parameter 25%.
When the RAD-0002 Monitor detects O2 value higher than the O2 AL1 (Enrichment), operate Alarm 1
LED, Fault LED, Relay 1, Audible, Strobe(if exist), till RESET on SEU regardless the decay of O2 level.
When O2 levels continue rising, and upon O2 AL2(Enrichment): operate Alarm 1 LED, Alarm2 LED,
Relay 1, Relay2, Audible, Strobe, Fault LED, till RESET on SEU regardless the decay of O2 level.
When O2 levels continue rising, and upon O2 AL3(Enrichment): operate Alarm 1 LED, Alarm2 LED,
Alarm3 LED, Fault indicator LED, Relay 1, Relay2, Relay3 Audible, Strobe, till RESET on SEU
regardless the decay of O2 level.
If the communication cable between the SEU & RDU doesn’t connect well, like the communication cable
looses in the Input port, the fault LED of SEU will blink, remind user reconnect the cable. If the
communication cable is inserted into the wrong port on RDU, after about one minute, the “Er7” will flash
on RDU LCD.
Please plug it into the right port on RDU, the unit will work normally after corrective action.
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SEU (Sensor Unit) Function Instructions
