User Manual

1
New Product
Liquid Leakage Sensor Amplifiers
K7L Series
Reliable Sensitive Liquid Sensors
for Stable Detection of Liquid
Chemicals with Low Conductivity
and Water Leakage
A lineup of new models compatible with Push-In Plus
Terminal Sockets is available.
UL listed when used with Push-In Plus Terminal
Sockets.
Sensor disconnection detection (K7L-AT50D@@/-
UD@@).
Models for long-distance wiring to 400 m.
Ribbon Electrode Bands and Point Sensors
available.
Model Number Legend
*1. The applicable models of the K7L depend on the model of the Socket. If the correct Socket is not used, the K7L nameplate will be upside down.
*2. The UL listing applies only when the Sensor is used in combination with a Push-In Socket (P2RF-08-PU). By itself, the K7L is UL recognized.
*3. Korean S-mark certification pending.
K7L-AT50@@ K7L-U@@ K7L-@@B
K7L-@@@@ @ @
(1) (2) (3)
(1) (2) (3)
Symbol Meaning Symbol Meaning
Output
Symbol Meaning
NPN connection
PNP connection
(Equivalent)
AT50
Standard wiring
distance
Blank No sensor disconnection detection OK OK Blank
For Screw Terminal
Socket
U
Long wiring
distance
D Sensor disconnection detection OK NG B
For Push-In Plus
Terminal Socket
DP
Sensor disconnection detection
Supports plus common connection
NG OK
Wiring distance
Disconnection
detection
Socket terminals (*1) Standards Model
Standard usage
Wiring cable: 50 m max.
Sensing Bands: 10 m max.
Not supported.
Screw Terminal
P2RF-08/-08-E
K7L-AT50
Push-In Plus Terminal
P2RF-08-PU
K7L-AT50B
Supported.
Screw Terminal
P2RF-08/-08-E
K7L-AT50D
K7L-AT50DP
Push-In Plus Terminal
P2RF-08-PU
K7L-AT50DB
K7L-AT50DPB
Long distance use
Total Length of Wiring Cable and Sensing
Bands: 400 m max.
Not supported.
Screw Terminal
P2RF-08/-08-E
K7L-U
Push-In Plus Terminal
P2RF-08-PU
K7L-UB
Supported.
Screw Terminal
P2RF-08/-08-E
K7L-UD
K7L-UDP
Push-In Plus Terminal
P2RF-08-PU
K7L-UDB
K7L-UDPB
(*2) (*3)
(*2) (*3)
(*2)
(*2) (*3)
(*2) (*3)
(*2)

Summary of content (26 pages)