OSA 3
Seperator alarm OSA 3 • Manual
AFRISO EMA AB
• Kilvägen 2, 232 37 Arlöv • Sweden • Phone +46-(0)40-92 20 50 • [email protected] • www.afriso.se
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TECHNICAL DATA
Central element
Intrinsically safe design
II (1) G [Ex ia Ga] IIA
OSA 3
Intrinsically safe circuit is galvanically isolated from earth.
Intrinsically safe circuit sensor
C
0
: 3.0 μF, L
0
: 7.0 Mh
I
0
: 181 mA U
0
: 24.8 V P0: 1.12 W
Operating voltage
230 V, 50 Hz
Relay outputs, contact data
Um 250 V, Im 5A, max 100 VA (AC)
Ambient temperature, electronics ±0 - +40°C
Enclosure class
IP 65
Note: The above intrinsically safe parameters (Co and Lo) apply under the
following conditions:
1. The combined concentrated inductance (Li) and capacitance (Ci) of the
external intrinsically safe circuit does not exceed 1% of the above values or
2. Inductance and capacitance are distributed as in a cable or
3. The external intrinsically safe circuit does not contain either concentrated
inductance on its own or concentrated capacitance in combination with a
cable.
In other cases involving combined concentrated capacitance (Ci) and concen-
trated inductance (Li) in the intrinsically safe circuit, up to 50% of the value of
Lo is permitted and up to 1 uF.
Level sensor ES4
Intrinsically safe design
II 1 G Ex ia IIA T4 Ga
Sensor type
Capacitive type ES4
Must be connected to a barrier which is galvanically isolated from earth.
Electrical parameters
Ci: 500 nF, Li: 10 μH, Ii: 170 mA
Ui: 25.0V; Pi: 1.2 W
Damming sensor R6-S
Intrinsically safe design
II 1 G Ex ia IIA T3 Ga
Sensor type
Thermistor sensor type R6-S
Must be connected to a barrier which is galvanically isolated from earth
Electrical parameters
Ci: 1 nF, Li: 10 μH, Ii: 200 mA
Ui: 30.0 V, Pi: 1.25 W
Ambient temperature sensor
-25 - +50°C
Sludge sensor ES8
Intrinsically safe design
II 1 G Ex ia IIA T4 Ga
Sensor type
Ultrasound type ES8
Must be connected to a barrier which is galvanically isolated from earth.
Electrical parameters
Ci: 750 nF, Li: 10 μH, Ii: 170 mA
Ui: 25.0V; Pi: 1.1 W
Ambient temperature sensor
0 - +50°C
DEFINITIONS
Level sensor Capacitive sensor ES4. Emits an alarm if there is a thick layer of oil/grease in the separator.
Damming sensor Thermistor sensor R6-S. Emits an alarm if there is a high fluid level in the separator.
Sludge sensor Ultrasound sensor ES8. Emits an alarm if there is a high sludge level in the separator.
Static level Fluid level when the separator is full so that water runs out through the outlet pipe.