Page 5
3 2 1
R
Linear Output 4-20 mA
Power Supply
12÷24 V.
1 2 3 4 5 6
Fault Relay
C
N O
C
N O
C
N O
Opiional Relay Board
CARD03
K3 K2 K1
Relay 20% LEL
Relay 13% LEL
Warning !!
Before to do this, it may want to check the operation range of the control unit.
OPTIONAL CARD03 BOARD INSERTION
Before inserting the Open Collector CARD03
board, switch off the power to the probe.
Insert the board according to the drawing
keeping the terminal block on the left.
All relays are voltage free.
Contact capacity 1A SELV
SELECTION OF THE OPERATING RANGE
The conventional probes leave the factory
with the operating range is selected to 20%
of the LEL
To select the operating range to 100% LEL
you need to move the jumper between the
central and the top pole.
Electrical cabling
Please read the paragraph: “Particular Specifications for Use in Explosive Atmospheres
in conformance with the European Directive ATEX 2014/34/UE”
.
NOTE:
Please remind that if you pierce the FLAMEPROOF container, it will completely lose its properties.
Moreover, you should install a FLAMEPROOF cable-gland for the connection cables
Selec. operating range
Led ON
connection USB port
Led ON
connection
USB port
SG895 Explosive Gas SG895 Toxic Gas
FUNCTIONING OF LED
The integrated LED on the probe has
a threefold function:
1) Green LED. Normal operation; In
waiting phase, the LED flashes.
2) Red LED. State of alarm; The
frequency of light changes according
to the percentage of gas monitored.
3)Led yellow. The probe detects an
anomal y, FAULT
FUNCTIONING OF LED
The integrated LED on the probe has
a this functioning:
1) Green LED. Normal operation;
3 2 1
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
ON
1 2 3 4 5 6
K3 K2 K1
20%
100%
Electrical connections
