Eaton K1650 - Page 13

INM MTL 130-0126 Rev 13
9
REAR VIEW OF PANEL
REMOTE SENSOR UNIT
Connect To
Intrinsically
Safe Earth
MTL
766P
Hazardous
area tmnls
1
2
3
4
Figure 2a - Standard Sample System
16
17
18
19
20
N
-
E
L
+
4/20mA
Output
C
12
11
10
9
8
7
6
5
4
3
2
1
NC
NC
NC
NC
NO
H in Air
2
Alarm 2
H in Air
2
Alarm 1
H2 in CO2 /
Range Alarm
NO
NO
NO
C
C
C
COM
REF
SIG
REMOTE SENSOR
COM(Green)
REF(Red)
SIG(Blue)
COM
REF
SIG
Hazardous area Safe area
Sample
outlet
Sample inlet
Sample Flow
Adjustment
Sensor cable - 16 x 0.2
twisted 30 metres max.
120-0404-5
CO in Air /
2
Alarm
Range / Fault
Hazardous
area tmnls
3
4
Common Signal Reference
To Katharometer
120-0431-1
17
18
16
4
3
2
1
6
5
20
19
Live
Neutral
Earth
Alarm1 NO
Alarm 1 C
Alarm 1 NC
Alarm 2 NO
Alarm 2 C
Alarm 2 NC
4/20mA +
4/20mA -
120-0430-2
IP65 Keyboard Box containing
“Simple Apparatus” Switches
Ex d IP66 Cable Path
Hazardous
Area Wiring
MTL766Pac
5
Wires
View Edit
Cal
Meas
Cal
Gas
HITECH INSTRUMENTS
17
18
16
4
3
2
1
6
5
20
19
8
Wires
3 x
MTL758+
View Edit
Cal
Meas
Cal
Gas
HITECH INSTRUMENTS
Luton England.
AL1AL2 AL2AL1
98.5H
2
%
Connect to
Intrinsically
Safe Earth
MTL
Hazardous
area tmnls
1
2
3
4
MTL
Hazardous
area tmnls
1
2
3
4
MTL
Hazardous
area tmnls
1
2
3
4
MTL
Hazardous
area tmnls
1
2
3
4
Non-hazardous
area wiring
View Edit
Cal
Meas
Cal
Gas
2LA2LA1LA AL1
K1550 MTL Gas analyser
98.5 H
2
%
Figure 6 - Internal wiring for K1550 control unit mounted in a hazardous area
Figure 5 - Connections when sensor is in a hazardous area (K1650)