OSA 3
Seperator alarm OSA 3 • Manual
AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone +46-(0)40-92 20 50 • info@afriso.se • www.afriso.se
2
Layer sensor
ES4
Electronic unit
OSA 3
Sludge sensor
ES8
Damming sensor
R6-S
OSA 3 is an Intrinsically Safe (Ex) grease
and oil separator alarm comprising of a
central alarm control unit that can accept
up to three independent alarm sensors
from three separate alarm points.
The IP65 enclosure housing the alarm con-
trol is designed to be mounted onto a wall
or a suitably flat surface.
Note: This central alarm unit must only
be mounted in a “safe-area” and never
installed in an area where there a risk of an
explosion.
• ES4 Capacitance type layer (Ex) sensor
for raising the alarm when the layer of oil
or grease exceeds the alarm value.
• ES8 Ultrasonic type sludge (Ex) sen-
sor for raising the alarm when sand
or particles in the separator exceed a
predefined level.
• R6-S Thermistor type (Ex) damming sen-
sor for indication of a high level.
OSA 3 is an Intrinsically Safe (Ex) central
alarm control unit approved for use with
the listed Ex sensors. The central alarm
control unit has two individually program-
mable voltage free relay outputs
(R1 and R2) that can be used to provide
remote alarm monitoring or activation of
secondary external alarms.
The central alarm control unit is program-
mable by navigation of the membrane key-
pad and displays the settings and alarms in
a text format.
OSA 3 is supplied boxed and in the follow-
ing variants:
1316 OSA 3 Level sensor
1318 OSA 3 Level and damming sensor
1319 OSA 3 Level, damming and sludge
sensor
13347 OSA 3 Level and sludge sensor
13345 OSA 3 Sludge sensor
Functional description
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