High-precision Electrostatic Sensor

SK series

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Model

SK-H050

Charge potential measurement

Measurement mode

High-precision mode, Wide-range mode

Measuring distance

High-precision mode

25 mm

Wide-range mode

100 mm

Measuring range

High-precision mode

±2 kV

Wide-range mode

±50 kV

Measuring accuracy

High-precision mode

±10 V*1

Wide-range mode

±100 V*1*2

Display resolution

0 to 999 V : 1 V, 1.00 to 9.99 kV : 0.01 kV. 10.0 kV and higher : 0.1 kV

Sampling cycle

Approx 1.4 ms

Temperature measurement

Measuring range

0 to +40°C

Measuring accuracy

±1°C*3

Display resolution

0.1°C

Sampling cycle

1 s

Humidity measurement

Measuring range

10 to 85% RH

Measuring accuracy

±5% RH*3

Display resolution

1% RH

Sampling cycle

1 s

Charge monitor function

Ion balance measuring mode

Ion balance measuring range

±1 kV*4

Measured voltage display resolution

±10 V*4*5

1 V*4

Static elimination time measuring mode

Charge voltage

±1400 V*4

Static elimination time display resolution

0.1 s*4

Measuring time

0 to 99 s*4

Laser class

Class 1 Laser Product (IEC60825-1: 2014 FDA(CDRH)Part1040.10*6)

PC interface

USB 2.0 Full Speed

Power supply

2 AA alkaline dry-cell batteries

Power supply

Operating time

8 hours (in charge potential measuring mode)

Environmental resistance

Ambient temperature

0 to +40 °C (No freezing or condensation)

Relative humidity

10 to 85 % RH (No condensation)*7

Material

SK-H050 : PC-ABS, PC, SUS/SK-H055 : PC, SUS, PTFE, PVC

Weight

SK-H050: Approx. 240 g, SK-H055: Approx. 220 g

*1 Within ±100 V when using high-precision mode; within ±1 kV when using wide-range mode. In other ranges, display value has an accuracy of ±10% (display value). Values are obtained from measurements with a response time of 0.8 seconds.
*2 Measuring accuracy is satisfied in the range of ±30 kV.
*3 25°C, 50% RH.
*4 SK-H055 is required.
*5 Within ±100 V. In other ranges, display value has an accuracy of ±10% (display value).
*6 The laser classification is implemented on the basis of IEC 60825-1 following the requirements of Laser Notice No. 50 of the FDA (CDRH).
*7 10 to 60 % RH when using SK-H055.

Model

SK-050

Charge potential measurement

Measurement mode

High-precision mode, Wide-range mode

Reference distance

High-precision mode

25 mm

Wide-range mode

100 mm

Measuring distance

High-precision mode

5 to 50 mm

Wide-range mode

60 to 120 mm

Measuring range

High-precision mode

±2kV*1

Wide-range mode

±50kV*1

Measuring accuracy

High-precision mode

±10V

Wide-range mode

±100 V*2*3

Sampling cycle

Approx 1.4 ms

Temperature measurement

Measuring range

0 to +50°C

Measuring accuracy

±1°C*4

Display resolution

0.1°C

Sampling cycle

1 s

Humidity measurement

Measuring range

10 to 85% RH

Measuring accuracy

±5% RH*4

Display resolution

0.1% RH

Sampling cycle

1 s

Charge monitor function

Ion balance measuring mode

Ion balance measuring range

±1 kV*5

Measured voltage display resolution

±10 V*5*6

1 V*5

Environmental resistance

Ambient temperature

0 to +50 °C (No freezing or condensation)

Relative humidity

10 to 85 % RH (No condensation)

Material

Body case : PC, Metal parts : SUS, Cable : PVC

Weight

Approx. 35 g

*1 If the distance to the sensing target is shorter than the reference distance, even if the conditions are within the measurable range, measurement cannot be performed up to the upper limit of the measuring range.
*2 Within ±100 V when using high-precision mode; within ±1 kV when using wide-range mode. In other ranges, display value has an accuracy of ±10% (display value). Values are obtained from a mean of 256 measurements.
*3 Measuring accuracy is satisfied in the range of ±30 kV.
*4 25°C, 50% RH.
*5 OP-87934 is required.
*6 Within ±100 V. In other ranges, display value has an accuracy of ±10% (display value).

Model

SK-1000

SK-1050

Type

DIN rail mounting

Main unit/expansion unit

Main unit

Expansion Unit

Display

Display resolution

0.001 kV

Display range

±99.999 kV to 99 kV (4-level selection available)

Analogue voltage output

±5 V, 1 to 5 V, 0 to 5 V, output impedance 100 Ω*1

N/A

Analogue current output

4 to 20 mA, maximum load resistance 350 Ω*1

Control input

Zero-shift input

Non-voltage input*2

Timing input

Reset input

Bank input

Control output

Judgement output

Open collector output (NPN/PNP switching, N.O./N.C. switching)*3

Alarm output

Open collector output (NPN/PNP switching, N.C.)*3

Power supply

Power supply voltage

10 to 30 VDC, including 10% ripple (P-P)*4

Supplied from main unit*4

Power consumption

1650 mW or below (55 mA or below with 30 V) (excluding load current of each output)*5

1170 mW or below (39 mA or below with 30 V) (excluding load current of each output)*5

Environmental resistance

Ambient temperature

0 to +50 °C (No freezing or condensation)

Relative humidity

10 to 85 % RH (No condensation)

Material

Body case and front cover : PC , Key top : POM , Cable : PVC

Weight

Approx. 150 g (including accessories)

Approx. 140 g (including accessories)

*1 ±5 V, 1 to 5 V, 0 to 5 V, or 4 to 20 mA selected for use.
*2 Inputs are assigned to the four external input lines. Non-voltage input rating : ON voltage 2 V or lower, OFF current 0.02 mA or lower. Voltage input rating : maximum input rating is 30 V, ON voltage 7.5 V or higher, OFF current 0.05 mA or below.
*3 NPN open collector output rating : maximum 50 mA/ch (20 mA/ch when expansion units are added) 30 V or below, residual voltage 1 V or below (1.5 V or below when adding 6 or more expansion units, including main unit). PNP open collector output rating : maximum 50 mA/ch (20 mA/ch when expansion units are added) below power supply voltage, residual voltage 2 V or below (2.5 V or below when adding 6 or more expansion units, including main unit).
*4 Use 20 to 30 V as power supply voltage when 6 or more expansion units, including main unit, are to be used.
*5 When connecting 8 units for DL connection, maximum power is consumption 11.3 W.

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