Conductive Level Controller

K8AK-LS

Ideal for Liquid Level Control in Industrial Facilities and Equipment.

Ratings

Power supply voltage

24 VAC 50/60 Hz or 24 VDC
 100 to 240 VAC 50/60 Hz

Voltage across elec-trodes

5 V p-p (Approx. 20 Hz)

Power consumption

24 VAC/DC: 2.0 VA/1.1 W max.
 100 to 240 VAC: 4.6 VA max.

Operating resistance

10 k to 100 kΩ (variable)

Reset resistance

250 kΩ max.

Response time

Approx. 0.1 to 10 s (variable)

Length of cable

100 m max. (fully insulated 3-core 0.75-mm2 cab-tyre cable, 600 V)

Indicators

PWR: Green, RY: Yellow

Output contact ratings

Rated load
  Resistive load
  5 A at 250 VAC
  5 A at 30 VDC
 Maximum switching capacity: 1,250 VA, 150 W
 Minimum load: 5 VDC, 10 mA (reference values)
 Mechanical life: 10 million operations min.
 Electrical life:
 5 A at 250 VAC or 30 VDC: 50,000 operations
 3 A at 250 VAC/30 VDC: 100,000 operations

Ambient operating tem-perature

-20 to 60°C (with no condensation or icing)

Storage temperature

-25 to 65°C (with no condensation or icing)

Ambient humidity

25% to 85% (with no condensation)

Storage humidity

25% to 85% (with no condensation)

Altitude

2,000 m max.

Terminal screw tightening torque

0.49 to 0.59 N·m

Case color

N1.5

Case material

PC and ABS, UL 94 V-0

Weight

Approx. 150 g

Mounting

Mounts to DIN Track.

Dimensions

22.5 × 90 × 100 mm (W × D × H)

Specifications

Operating voltage range

85% to 110% of rated voltage

Installation environ-ment

Installation category II, pollution level 2

Approved standards

EN 61010-1

EMC

EN 61326-1 Industrial electromagnetic environment

Safety standards

UL 508 (Recognition), Korean Radio Waves Act (Act 10564),
 CSA: C22.2 No.14, CCC: GB/T 14048.5

Insulation resistance

20 MΩ min.
 Between all external terminals and the case
 Between all power supply terminals and all input terminals
 Between all power supply terminals and all output terminals
 Between all input terminals and all output termi-nals

Dielectric strength

2,000 VAC for 1 min
 Between all external terminals and the case
 Between all power supply terminals and all input terminals
 Between all power supply terminals and all output terminals
 Between all input terminals and all output termi-nals

Noise immunity

1,500 V power supply terminal common/normal mode
 Square-wave noise of ±1-μs/100-ns pulse width with 1-ns rise time

Vibration resistance

Frequency: 10 to 55 Hz, 0.35-mm single amplitude
 10 sweeps of 5 min each in X,Y, and Z directions

Shock resistance

100 m/s2, 3 times each in 6 directions along 3 axes

Degree of protection

Terminals: IP20