K7L

Features

Ultra-miniature liquid leakage sensor amplifier

The Plug-in socket with Push-in plus technology, P2RF-08-PU is available for easy wiring. K7L detects a wide variety of liquids, ranging from water to liquid chemicals with low conductivity.

  • Operation range: Up to 50 MΩ
  • Four sensing ranges available
  • Detection method: Conductive
  • Two LEDs: Green for power supplied, red for output indication
  • Conforms to EMC and LVD Directives, UL/CSA approved
Specifications & ordering info

Ordering information

 

Product name

Characteristics

Order code

Liquid leakage sensor
amplifier

Standard

K7L-AT50B

With disconnection function set

K7L-AT50DB

 

Product name

Characteristics

Order code

Sensors

Sensing band

Standard model (material: Polyethylene)

F03-16PE 5M

For temperature and chemical resistance
(material: Polyethylene PTFE)

F03-16PT 5M

For flexibility and superior workability
(material: Plastic fiber braided cable)

F03-16SF 5M

For flexibility and visual confirmation
of leakage
(material: Plastic fiber braided cable)

F03-16SFC 5M

Point
sensor

Easier to wipe off than the band type

F03-16PS

Electrodes have PTFE coating to resist chemicals

F03-16PS-F

Accessories

 

Product name

Characteristics

Order code

Terminal blocks (10 pcs)

 

F03-20

DIN-rail mounted socket

With finger protection

P2RF-08-E

Without finger protection

P2RF-08

Plug-in socket

Screwless socket with Push-in plus technology

P2RF-08-PU

 

Product name

Characteristics

Order code

Mounting
brackets
and
stickers

Sensing band
stickers

Used for F03-16SF(C)

F03-25

Used for F03-16PE
(adhesive tape)

F03-26PES

Used for F03-16PE (screws)
(30 pcs)

F03-26PEN

Used for F03-16PT (screws)

F03-26PTN

Point sensor
mounting brackets

Used for F03-16PS

F03-26PS

Specifications

Rated power supply voltage

12 to 24 VDC (allowable voltage fluctuation range: 10 to 30 VDC)

Operate resistance

0 Ω to 50 MΩ, variable

Range 0: 0 to 250 kΩ

Range 1: 0 to 600 kΩ

Range 2: 0 to 5 MΩ

Range 3: 0 to 50 MΩ

Release resistance

105% min. of operate resistance

Output configuration

NPN open-collector transistor output with 100 mA at 30 VDC max.

Wiring distance

Connecting cable: 50 m max.

Sensing band length: 10 m max.

Ambient temperature

Operating: -10 to 55°C

Power consumption

1 W max.

Response time

Operate: 800 ms max., release: 800 ms max.

Weight

Approx. 14 g

Disconnection detection function
(K7L-AT50D & K7L-AT50D-S only)

Detection signal: 10 VDC max., 200 ms, detection time: 10 s max.
Release: By resetting the power supply

Size in mm (H×W×D)

28.8×12.8×46

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