The best sensing range in the industry at 100 mm/ ±50 kV.

Sensors that measure static charges are greatly affected by the measurement

distance. The ZJ-SD solves this problem by combining with a ZX-series

Displacement Sensor to enable communicating distance information and thus

achieve high-accuracy measurements.

Note: Ultrasonic Displacement Sensors are also available. Contact your OMRON representative for details.

Long-distance, High-precision Measurements

Workpiece Distance Compensation

Workpiece Size Compensation

Best Long-distance, High-precision Measurements in the Industry

Electrostatic Sensor

Accurate measurement over entire

range with distance compensation.

1.2

1

0.8

0.6

0.2

020

40

Sensing distance (mm)

Static Electricity vs. Sensing Distance (Fixed at 1 kV)

60

80

100

0.4

Electrometer with feedback

The ZJ-SD provides the highest detection accuracy in the industry when combined with a ZX Displacement Sensor.

And even more precise measurements are possible with the compensation function that adjusts to the size of the

workpiece.

The Electrostatic Sensor's sensing area is approximately five times

the installation distance.

Enter the workpiece size to measure the static charge of workpieces

smaller than the sensing area. (See note.)

The ZJ-SD can compensate the static charge based on a

comparison of the installation distance recorded in the Preamplifier

and the size of the sensing area.

Note: Except for the workpiece, static charge inside the sensing area must be 0 V. Use a

measurement error of approximately 10% as a guide for a measurement distance of

5 mm and a workpiece of 10 mm in diameter.

Accurate Static Charge Measurements

for Small Workpieces

Workpiece size

Sensing area

In addition to distance data compensation performed by the

Displacement Sensor, errors from distance fluctuations can also

be reduced by directly inputting the installation distance into the

Amplifier.

Unaffected by Measurement Distance

Input distance data.

Electrostatic Sensor

Distance information

Electrometer with no

compensation

Long distance,

Highly accurate detection

5