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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
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
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
FUNCTIONING OF LED
The integrated LED on the sonde 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 anomaly,
FAULT
{
Led ON
Selec. operating range
connection USB port
