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Fixed-distance photoelectric sensorPK series

Main Unit, Medium-distance Type


[Discontinued model]

This model has been discontinued.

Compliance with the certification standard is ensured as of the time of shipment from our company.

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Detecting area

40 to 100 mm 1.57" to 3.93" (10 × 10 cm 3.93" × 3.93" white mat paper)

Light source


Spot diameter

8 mm or less

Detectable object

Transparent and opaque

Hysteresis (of detecting distance)

4% (at 40 mm) to 10% (at 100 mm) of the detecting distance

Sensitivity adjustment

1-turn trimmer (240°C 464°F)

Response time

2 ms max.

Operation mode

LIGHT-ON/DARK-ON (switch-selectable)

Indicator lamp

Output: red LED

Control output

NPN open-collector 100 mA max. (24 VDC max.), Residual voltage: 1 V max.

Protection circuit

Reversed polarity,surge voltage


Power voltage

12 to 24 VDC ±10 %, Ripple (P-P) 10 % or less

Current consumption

45 mA or less

Environmental resistance

Enclosure rating


Ambient light

Incandescent lamp: 3,000 lux or less, Sunlight: 10,000 lux or less

Ambient temperature

-10 to +50 °C 14 to 122 °F (No freezing)

Relative humidity

35 to 85 % RH (No condensation)

Vibration resistance

10 to 55 Hz, Double amplitude 1.5 mm 0.06", 2 hours in each of the X, Y, and Z directions

Shock resistance

1,000 m/s2, 6 times in each of the X, Y, and Z directions

Case material

Fiberglass reinforced plastic


Approx. 75 g (including 2-m 6.6' cable)

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