61F-G
@
12
Liquid Level Indication and Alarm
Basic Type
61F-I
Dimensions:
page 14
Liquid Level Indication and Alarm
Water supply
source
MCCB
R S
M
P
T
220-VAC power supply
61F-I
Water
tank
Upper limit
Lower limit
Intermediate
Alarm
Upper alarm
PS-3S
Lower alarm
Intermediate
(See note.)
E
1
S
0
S
1
S
2
E
3
E
2
E
1
T
C
B
L
3
L
2
B
PL
PL
L
1
PL
61F-11
Relay Unit
8 V
220 V
110 V
0 V
24 V
24 V
U
1
U
2
U
2
U
1
U
1
U
2
61F-11
Relay Unit
E
2
E
3
•
Power Supply Connections
110 VAC: Connect S
0
and S
1
.
220 VAC: Connect S
0
and S
2
.
Note:
Be sure to ground the common Electrode (the longest Electrode).
Connections
B
L
L
E
2
E
3
Water tank
Lower
limit
Middle
Upper
limit
(U
1
indicator ON)
(U
1
indicator OFF)
(U
2
indicator ON)
(U
2
indicator OFF)
B
L
H
L
M
E
1
U
1
U
2
Po
w
e
r
supply
Relay Unit Location
•
When the water level drops below
E
2
, the lower-limit indicator turns
ON and the alarm sounds (U
2
indicator OFF).
•
When the water level reaches E
2
,
the alarm turns OFF and the
intermediate indicator turns ON
(U
2
indicator ON).
•
When the water level rises to E
1
,
the upper-limit indicator turns ON
and the alarm sounds (U
1
indicator ON).
Principles of Operation
