High-precision Ultrasonic Displacement SensorUD-500 series


Amplifier Unit

[Discontinued model]

This model has been discontinued.

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Measurement range

300 to 1,300 mm

Linearity range

400 to 900 mm


0.5 mm (when the response speed is set to LOW)*1


±0.1% of F.S.*2

Response speed (switch)

52.5 ms (HIGH), 560 ms (MID), 5,250 ms (LOW)

Minimum detectable object

Object with an area of 20 mm2*3

Analogue output

Output voltage

-5 to +5 V (10 mV/mm)*4


100 Ω


NPN open-collector 100 mA max. (40 V max.), Residual voltage 1 V max.

Timing input

NPN open-collector or non-voltage contact signal

Temperature characteristics

0.05% of F.S./°C*5

Connection cord length

3 m, 10 m selectable


Power voltage

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

Environmental resistance

Ambient temperature

0 to +50 °C

Relative humidity

35 to 85 % RH (No condensation)


Approx. 400 g

*1 These values were measured within the linearity range.
*2 The F.S. displays the linearity range.
*3 This expresses the size that can be detected and does not satisfy the specifications listed above.
*4 the UD-500 outputs 0 to 5 V at a measurement range of 100 to 300 mm and the UD-501 outputs 0 to 5 V at a measurement range of 800 to 1300 mm.
*5 The value under an ambient humidity of 65% RH and a measurement distance of 150 mm for the UD-500 and 750 mm for the UD-501. The F.S. displays the linearity range.

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