METROL specialize in manufacturing Tool Setters & Precision Positioning Switches

Ultra precision position Swhitches  Metrol

Air Micro Switch [DPA]

0.002mm gap can be
detected reliably!

Air Micro Switch with ±1 μm repeatability enables stable detection of gaps between jig and workpiece without contact.

The IP67 protective structure realizes the precise adhesion and seating confirmation under harsh working conditions.

Reasons to choose Air Micro Switch

±1μm Repeatability

The ±1μm repeatability, which is 10 times as high accuracy as conventional air sensors, can stably detect 2 to 80 μm gaps between the jig and workpiece.
The precise adhesion and seating confirmation realize a prevention of machining faults and improvement of machining accuracy.

350μm Detection distance type

The IP67 protective structure is resistant to harsh working conditions!

The IP67 protective structure also enables the installation under harsh working conditions such as the inside of the CNC machines where coolant splatters.

By shortening air piping, it is possible to improve response speed and realize higher accuracy.

Technical Catalog Download

Want to know more about Metrol Switches?
Our catalog provides you with detailed technical data such as specification, size and circuit diagram.
Download and get your free catalog now!!

FREE DOWNLOAD!

Product list

  Product No. Price Download
DPA-A2
Please request for a quote.
Catalog
(PDF)

Manual
(PDF)

CAD
(DXF)

Specification

Repeatability ±1μm *
Response speed 0.8 second *
Protective structure IP67
Detection distance Adjustable within the range of 2 to 80 μm (10 μm at the factory setting)
Set with the signal point adjustment tab
Setting pressure 0.1MPa
Operating temperature range 0°C – 60°C (no condensation)
Contact rating DC5V-DC24V

*Tube length : 1.5 m when using a recommended nozzle

Metrol VS Competitor

Metrol’s
Air Micro Switch

Air sensors / Gap sensors made

by another companies
Repeatability
(detection distance)

± 0.001mm
(0.002〜0.08mm)

0.01mm〜
(0.01〜0.25mm)
Protective structure
IP67
(Applicable to the use under harsh working conditions
where coolant splatters)

IP66
(Unsuitable for the use under harsh working conditions
where coolant splatters)
Response speed
About 0.8 seconds (Air piping length : 1.5 m)

An installation of the sensor body inside the machine
can shorten the air piping length.

About 5 seconds (Air piping length : 12 m) 

An installation of the sensor body outside the machine
can require the extension of air piping length.
Movement differential
2μm

約10〜30μm
Numeral display
No display (ON/OFF signals only)*

Display

*Because the high-accuracy “precision positioning switch” is adopted in the internal mechanism, the threshold can be easily set with the masterpiece and signal point adjustment tab.

High accuracy of Air Micro Switch

Metrol’s Air Micro Switch has " high-accuracy diaphragm" for pressure-sensitive element.

The “precision positioning switch” detects a “slight movement of diaphragm” by the difference between the internal pressure in A and that in B chamber and determines OK/NG, and the high accuracy can be demonstrated.

*The conventional air sensors use “pressure-sensitive element” and the amp amplifies and detects the signal, therefore, the signal set position are variable due to temperature drift.

Applications

Adhesion confirmation in machining the engine

The 10 times as high accuracy as the conventional air sensors can realize precisely cutting and machining the engine.

Adhesion confirmation to mold pressed by oil pressure

A 10μm of foreign materials is stably detected in gaps between the cope and drag.

Adhesion confirmation in machining tire molds

A 10μm uplift by the cutting chips can be detected by the improvement of the machining accuracy.

Adhesion confirmation in processing computer components

The installation of IP67 inside the machine can reduce considerably the takt time from 5 to 0.8 seconds.

Measuring the thickness of the wafer

The thickness of wafer can be measured by 2μm precision under harsh working conditions where cutting chips splatters.

Detection of the gap in the casting equipment

Small gaps of the mold can be steadily detected by 2μm precision under high-temperature environment.

Technical Catalog Download

Want to know more about Metrol Switches?
Our catalog provides you with detailed technical data such as specification, size and circuit diagram.
Download and get your free catalog now!!

FREE DOWNLOAD!

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