Page top


LED Displacement Sensor


Low-cost Displacement Sensor with 10-micron Resolution with Red LED


Measurement range ±4 mm
Measurement point 25±1 mm
Light source Red LED
Spot diameter 2-mm dia. (at measurement point)
Resolution 10 microns (See Note. 1)
Linearity ±3% FS (See Note. 2)
Response time 5 ms (In case of white alumina ceramic. Linearity change according to object.)
Temperature characteristics ±0.3% FS/°C
Warming up time 3 min (within 1% of stable value)
Indicators Stability:
Stable range: Lit green
Operating range: Not lit
Dark: Lit red
In range: Green
Out of range: Red
Outputs Analog output:
4 to 20 mA/±4 mm
Load impedance: 300Ω max.
DARK output:
NPN open collector
50 mA max., 30 VDC
Residual voltage: 1 V max.
External light 3,000 ln (incandescent light)


Power supply voltage 12 to 24 VDC±10%: ripple (p-p) 10% max.
Current consumption 80 mA max.
Vibration resistance Destruction: 10 to 55 Hz (1.5-mm double amplitude) for 2 sweeps of 15 min each in X, Y, and Z directions
Shock resistance Destruction: 500 m/s2 for 3 times each in X, Y, and Z directions
Ambient temperature Operating: -10° to 55°C (with no icing)
Ambient humidity 35% to 85% (with no icing)
Degree of protection IP66
Weight 150 g (with 5-m cable); 50 g (without cable)
Attachments Mounting bracket, mounting screws, resistor (250Ω, 0.5 W)

Note: 1. Resolution
              The resolution is the peak-to-peak displacement conversion value of the analog output.
              (Conditions: white alumina ceramic at the measurement point)

Z4W-V Specifications 3

Note: 2. Response Time
              The delays are the 10% to 90% rising and falling times of the analog output in response to a sudden change in
              the displacement.

Z4W-V Specifications 4