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WEKA AG
Schürlistrasse 8
CH-8344 Bäretswil
++41 43 833 43 43
OPERATING INSTRUCTION
SIGNAL CONDITIONER
MU-80-Ex with separator
Material no. 040-5008
Housing:
Execution according to SAK 3572-10
Material GD-AlSi-10 (seawater ressistant)
Enclosure IP66 (after tightening of the cable gland)
Weight ca. 0.98 kg
Shock ressistant to 400 g
Intrinsic safety:
SEV 17 ATEX 0105
Electrical datas:
Supply- and output circuitry
Operational values : U
I
Intrinsic circuit
Maximum values :
U
0
I
0
P
0
L
0
C
0
P:\Verkauf\30 Dokumente\Betriebsanleitungen\Originale\TLI\BA_MU-80-Ex-m-T.docx
II (1) G [Ex ia Ga] IIC
<= 32 VDC
<= 20 mA
= 7.6 V
= 26 mA
= 150 mW
= 1 mH
= 280 nF
Attention
1. The signal conditioner must be installed in the safe
area.
2. On the non-intrinsically safe side of the signal
conditioner only such components may be used
which internal voltage does not exceed 250V.
3. The intrinsically safe circuit is galvanically
connected with the protective ground. The non-
intrinsically safe circuits is isolated.
4. The earth contact of the signal conditioner has to be
wired up with the corresponding protective ground
connectors in the hazardous area to provide potential
equalization.
5. The maximum ambient temperature is 40°C.
NOTE
Wrong polarisation or overvoltage will destroy the
isolation module! The signal conditioners input is
protected with a fuse.
Fuse 50mA M, 5 x 20mm, DIN 41 571
2- wire- connection
-
S
+
Calibration instruction
1. Wire up amp-meter as illustrated above.
2. Move float to it's maximum position. Adjust 20mA-
potentiometer untill amp-meter reads 20 mA.
3. Descend the float to it's lowest position. Adjust 4mA with
the 4mA-potentiometer.
Repeat steps 2. and 3. As required since the two
4.
adjustments may influence each other.
1200
1000
800
600
400
200
0
12
16
Erstelldatum 04.05.2020
-
+
load
20
24
28
32
supply voltage [V]
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