Specs Inline Electrostatic Sensor SK series

In-line type sensor head

Model			SK-050
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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).

In-line type amplifier unit

Model		SK-1000	SK-1050
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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.