PS-IA | UNIPULSE

Product outline

The PS sensor is an ultra-precision displacement sensor with high stability and high resolution, applying our unique capacitance technology. It has earned a good reputation as a displacement sensor with great versatility and price, being used for measuring various parameters such as displacement, vibration, shape, and position.
Also, considering global environment, those products are Pb-free and conforms to RoHS2 Directive.
It is used both as a versatile high-performance tool for R&D and as a built-in component for semiconductor and electric devices.

Please note in advance that there are cases in which we are unable to sell this product due to Regulations for Export Trade Control in Japan.

Various shapes and types

We can customize the shape for you! Please feel free to contact us anytime.

Features

This is a single channel amplifier with BNC analog output, NEAR/FAR LED display, and zeroing function, operating with DC 24 V or AC 100 V power supply. This compact and multifunctional device can be used for various purposes such as R&D and integration to system and/or devices.

A wide variety of product lineup with standard measuring range from 30 μm to 5000 μm.
The sensitivity of the sensor is not affected as far as target objects are made of conductor material.
Free from the influence of surface roughness
High linearity : ±0.05% or less
Low noise : 0.002%/FS(rms) or less

Applications

Principle of measurement

As shown in the figure below, the principle of parallel plate capacitor is applied to the PS sensor. Suppose the electrostatic capacitance between the center electrode and the target is “C”, the inductivity and distance between probe and the target are “ε” and “g,” and center electrode surface area is “A”, then, electrostatic capacitance can be calculated by the following formula:

In addition, by using AC constant current power supply as shown in the figure, the output voltage, calculated by the following formula, will be relative to the gap between sensor and the target object:

To achieve high linearity, parallel electric field is obtained at the center of electrode by equalizing the electric potential level of guard electrode and the center electrode.

Specifications

■ Amplifier specifications

The PS-I is equipped with various features like one-touch zero reset function, NEAR/FAR LED display, and multichannel operability, and it can be used for wide variety of applications.

Model	PS-IA
Standard range of voltage output	0 to 10 V
Output terminal	BNC connector
Frequency characteristic	DC to 1 kHz
Operating temperature range	10 to 40℃
Operating voltage	DC 24 V or AC 100 V
Dimensions	110W×30H×162D mm
Weight	355 g (main body)

■ Specifications of standard probe

To make the sensor probe small, no electric circuit is built into the sensor probe. Special probes can be made to order as well (e.g. sensor probes resistant to vacuum condition).

Model	Outer diameter (mm)	Offset (μm)	Range (μm)	Resolution (nmrms)	Linearity (%)	Probe length (mm)	Cable length (m)
△X□□-30	4	10	30	0.6	±0.05	5 10 30	2 (standard)
△X□□-50		10	50	1
△X□□-100		10	100	2
△Y□□-50	6	10	50	1
△Y□□-100		10	100	2
△Y□□-250		25	250	5
△Y□□-500		50	500	10	±0.1
△Z□□-500	12	50	500	10	±0.05	10 30
△Z□□-1000	12	100	1000	20	±0.1	10 30

“△” = cable type, “□□” = probe length (mm)

Xin lưu ý rằng có thể có những khác biệt riêng về tông màu trên các thiết bị hiển thị như đèn LED, ống màn hình huỳnh quang và các màn hình LCD do quá trình sản xuất hoặc lô sản xuất khác nhau.