Back to the list
Display unit M1-M3 Air Gages

Display unit M1-M3 Air Gages

The M3 is the last generation of tool for dimensional control with an air gage : air ring, air plug gage, air fork etc.

The M3 is compatible with all the air gage brands available making possible to keep your current air gage and to use this modern and versatile display.

Product detail
Presentation
Specifications
Uses
References
Options
Downloads
Related products
General information

The M3 AG is a new generation of electronic for air gages

Thanks to its intuitive interface and its simplicity, the M3 will be immediately adopted by all operators.

This display has different communication means, USB and RS232. This allows to drive the device and to read the measurements from a computer or a PLC.

Its case, machined in a solid aluminum block offers to the M3 an unequalled robustness, even used in severe industrial environment (cutting oil etc...)

Main features

  • 2 measurement configurations (2 dimensions)
  • Different display modes with 1 or 2 dimensions per screen, with or without tolerances.
  • Static and dynamic measurement (Min, Max, Max-Min, Average, Median)
  • Control limits
  • Sorting by classes (up to 16 classes)
  • Connection of an optional box with 8 optocoupled inputs/outputs (MB-IO)
  • Absolute or relative measurements
  • Modbus RTU or ASCII communication
  • USB keyboard function when the M3 is connected to a PC
  • Automatic change of measurement configuration by buffer detection during use
  • Integrated cone calculation
  • Optional temperature monitoring and/or compensation
  • Safe and easy to use
  • Can be configured with a QR code scan, allowing a buffer change in a few seconds
  • Very short stabilization time of the measurement
     
Functions

Many functions and operating modes can be defined:

  • Nominal dimension, tolerance limits, control limits, standard dimension (reference part).
  • Choice between 2 measurement configurations (2 dimensions)
  • Calculation formula (C1, C2, -C1, -C2, C1+C2, C1-C2, -C1+C2, -C1-C2, 3-point diameter)
  • Calibration
  • Static or dynamic measurements (Min, Max, Max-Min, Average and Median)
  • Relative or absolute mode
  • Single or multi-range display mode (2 bar graphs) with or without tolerances
  • Sorting by classes, up to 16 classes
  • Locking of some functions with masking of buttons for a maximum simplified user interface
  • Display resolution (2 to 5 decimal places)
  • Metric (mm or µm) or inch measurements
  • M-Bus connector to connect a box with 8 optocoupled inputs/outputs (good part, bad part, calibration etc...)
  • Automatic dimension change by detection of sensor movements
  • Choice of language for the user interface
     
USB keyboard function

The M3 is equipped with a mini-USB connector with 2 functions
1. Power supply via a supplied wall transformer.
2. Measurement transmission: When the M3 is connected in USB to a PC, it is detected as a keyboard with the standard drivers of your operating system (Windows, MacOS, Linux...). When you transfer measurements from the M3, they appear on your computer screen as if they had been entered on the keyboard. No need to install any specific driver or software.

Advantages of this feature:

  • No risk of error when entering values
  • Saves time
  • Works everywhere on all software: Excel, SAP, Word....
  • No need for a driver, interface software or computer knowledge: you just plug in the display and you can work
     
RS 232 Interface

A serial interface RS 232 allows the transmission of measurements as well as the remote control of all the functions of the M3 thanks to ASCII commands or the MODBUS-RTU protocol

Display with manual galvanometer
Display with manual galvanometer
Display 1 dimension with control limits
Display 1 dimension with control limits
Display 2 dimensions
Display 2 dimensions
Icon desktop (Configuration menu)
Icon desktop (Configuration menu)
Configuration window
Configuration window
Tolerance-free mode
Tolerance-free mode
Display unit M1-M3 Air Gages

 

Measurement of an 2mm external diameter on a diesel injector part, using an high resolution air ring directly connected on the M1 display.

Display unit M1-M3 Air Gages

 

2 needle indicators have been replaced by 1 m3 display. Depending on the air plug in use, the display shows the current measurement. It alows to save space on the working area and to prevent measurement error by a very clear green/red indication

Display unit M1-M3 Air Gages

Measurement of internal diameter on a Honing machine, oily environment. The air flow can "clean" the part by removing the oil at the measuring point.

Display unit M1-M3 Air Gages

Air gauge application on an automated sorting machine. The M3 display measures 2 internal diameters, communicates with the main PLC and transfers the results to a SPC software

Display unit M1-M3 Air Gages

Measurement of a 3mm internal diameter of a precision automotive part.

Article references

Items
References
M3 display with 2 inputs for pneumatic measurements
References: 13040
M1 display with 1 input for pneumatic measurements
References: 11040
RS232 to PC communication cable
References: 45160
Multi-function pedal
References: 18020
Options

Air preparation for air gage (without air saving function) (ref ACS-PNE-003)
Air preparation for air gage (without air saving function) (ref ACS-PNE-003)

The M3 AG must be used with a precision pressure regulator. It is recommended to use the regulator supplied by Metro to ensure the best possible measurements!

We also propose a version with air saving functions. 

Read more
Table switch (ref 18022)
Table switch (ref 18022)

This robust and ergonomic button is made on a machined aluminum base.

It advantageously replaces the pedal when it is used on a table.

Compatible with all Metro products: Displays and multiplexers.

Read more
MB-RO box with 1 relay output
MB-RO box with 1 relay output

Module with one relay output - to pilot air economy system or air gage probe output.

It is fitted with a M12 connector

To be used with the cable 45186-1.5 

Read more
Module with 8 optocoupled I/O ref MB-IO box
Module with 8 optocoupled I/O ref MB-IO box

The MB-IO M-Bus box has 8 optocoupled inputs/outputs for additional functionality, e.g. output of good or bad parts, calibration input etc. The M-Bus units are presented in an aluminum profile that can be mounted on a standard DIN rail. More details on this page: M-BUS

Read more
Air preparation (ref ACS-PNE-004)
Air preparation (ref ACS-PNE-004)

Air preparation unit with solenoid valve for air gages with air saving function. This controller can be controlled with the MB-RO module.

Used with Metro M400, M1 or M3 displays, this regulator reduces the pressure (the pressure is divided by approximately 10) automatically after an adjustable period of time without use.

This allows significant savings in electricity, without completely cutting off the air, which would deteriorate the measurement due to the temperature variation.

Read more
Multi-function pedal (ref 18020)
Multi-function pedal (ref 18020)

This sturdy pedal can be configured in different ways: calibration, measurement transmission, start of dynamic measurement etc...

Read more
M-Bus cable for M3 Heidenhain or Air gage (ref 81213-1.5)
M-Bus cable for M3 Heidenhain or Air gage (ref 81213-1.5)

Allows the connection of compatible M-Bus boxes to an M3 display for Heidenhain probes or Air gages.

The M3 for inductives probes require a cable ref 81210-2

Read more
RS232 communication cable (ref 45160)
RS232 communication cable (ref 45160)

This cable is used to connect the M2/M3 to a computer.

Read more
Digimatic cable between M1/M3 and Mux (ref 18193 )
Digimatic cable between M1/M3 and Mux (ref 18193 )

This cable is used to connect the M2/M3 to a Metro Mux multiplexer

Read more
RS232 to USB communication cable (ref 45173)
RS232 to USB communication cable (ref 45173)
Read more
Temperature module MB-TP
Temperature module MB-TP

The MB-TP module is used to read a type K thermocouple or a PT100 probe and use it on a Metro display to create an alarm on a temperature variation or to perform temperature compensation of the measurement.

Read more
Metro - Newsletter
so you don't miss anything
Subscribe to our newsletter