Intrinsically safe for potentially explosive areas

The Ex-approved XT550 system is developed for hazardous areas and is easily operated through our XT Alignment app. It is an advanced measurement system for alignment of horizontal and vertical/flange mounted rotating machinery.​

It comes with Easy-Laser’s dot laser technology, allowing you to measure large machinery and long spans. The measuring units are approved in accordance with the latest ATEX directive*, and are rated both IP66 and IP67 water and dust proof.


System XT550 comes in two configurations; with or without the ATEX approved ecom Tab-Ex® display unit. The XT Alignment app runs on most iOS and Android units, as well as our own display unit XT11. However, those are not allowed in potentially explosive areas, but makes for a perfect complement for use in other places.


Note. For use in Ex-classed areas, the mobile device you’re using must be approved for these areas. Always check for approval labels before entering potentially explosive areas. The XT11 is not Ex/ATEX approved.

*The XT50 measuring units are ATEX approved which means means they comply with the Essential Health and Safety Requirements relating to the design of products intended for use in potentially explosive atmospheres. Download certificate.

  • Ex/ATEX approved
  • Continuous sweep
  • Multipoint
  • Display data on multiple platforms
  • Free app – no license needed
  • Unique documentation possibilities
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The key to a quick and reliable measurement are programs that guide you through the measurement process. The Easy-Laser® systems support you with smart functions and a clear user interface. Still, it is not our products that do the job, but you as a professional technician!


The user interface is intuitive and guides you through the measurement process. It is animated and zooms into the most important things for each step. You can save the measurements of a machine for As found and As left in the same file.


For measurement and alignment of vertical and flange mounted machines.

Easy-Laser XT machine train

Machine train

Build your own machine train with theoretically as many machines as you like. You can pick the reference machine manually, or let the program choose one that will minimize the need for adjustments.

Twist measurement

Program to measure flatness/twist of, for example, machine foundation, machine tables, etc. 

Continuous sweep

Automatic recording of measurement values during continuous sweeping of the shaft. Hundreds of points are registered. You can start anywhere on the turn. Quality check of measurement is provided


The EasyTurn™ function allows you to begin the measurement process from anywhere on the turn. You can turn the shaft to any three positions with as little as 20° between each position to register the measurement values. Voila! Measurement is complete!

Wide live adjustment

Adjust with live values also when measuring units are positioned up to 44° from absolute V and H position.

SOFT FOOT CHECK (Both machines)

Alignment work begins with a soft foot check. The soft foot check ensures that the machine is resting evenly on all its feet by indicating which foot/feet should be adjusted. This is an important part of securing a reliable alignment. After the soft foot check is complete, you can go directly to the alignment program with all of the machine’s distance values saved.


The Values program has a clear digital representation of the laser target, and a list view for recorded values. Use it to measure as with dial gauges and to check bearing play.

Built-in manual

The app includes a searchable Users Manual which opens the right chapter depending where in the process you are. This makes it quick and easy to find the answer to your user questions.

Locked feet

Lock any pair of feet on the machine. Used when aligning base-bound or bolt-bound machines.

Select coupling type

Choose method depending on coupling type: short flex or spacer shaft.

XT select machine 3D image

Select machine image

Choose from different 3D machines to portray your machinery on either side of the coupling.


Measurement results can be checked against pre-defined tolerance tables or values you determine yourself. This allows you to immediately see if the alignment is within the approved parameters, thereby considerably reducing the amount of time spent on alignment.

The system includes a tolerance table that follows the new ANSI/ASA S2.75-2017 standard. Read more about the standard here.

Mirror machine image

The mirror view function allows you to adjust the position of the motor on screen to correspond with the position of the machine in front of you, making it easier to understand adjustment directions.


Your latest measurement is always available, automatically saved.


Save measurement files as templates, with machine data and settings, to quickly start measurements.

Read QR and bar codes

Assign a specific code to a specific machine, then use the built-in camera of your device to open assigned file and settings. (Note: camera resolution requirements applicable.)

Sign reports electronically

Sign-on screen to verify your job. The signature is saved with the PDF file.


Oftentimes, machines expand considerably when moving from a cold to hot operating temperature. The Thermal Growth Compensation function allows the measurement system to calculate the appropriate shims and values needed to make adjustments in such cases. Compensation values for the machines are normally supplied by the manufacturers.


An advanced electronic filter function can be used to achieve reliable results even under poor measuring conditions. Air turbulence and vibrations from adjacent machines are no match for the Easy-Laser® filter function!


The software can adjust to machine designs of all types such as those with two pairs of feet, three pairs of feet, and feet in front of the coupling, etc.

Document your data


Save all measurements in the display unit’s internal memory.


Use one of the two formats included, or design your own. Both a PDF and an Excel file is generated.



Add a photo of the machine to explain your work a little more. Add a thermal image to show the difference after alignment. (IR Camera is optional.)


Share the reports via email with your client, or to e.g. your OneDrive™ file area.



Quickly print on a wirelessly connected printer.



Save your files to USB and copy to other devices.
system parts  

Display unit ecom Tab-Ex®

Based on Samsung GALAXY Tab Active, ecom´s hazardous area tablet is certified for use in Zone 1/ 21 & DIV 1 hazardous areas.


  • Glove-enabled touch-screen
  • Large 8" display
  • ATEX approved
image description
  1. Rubber coated housing
  2. Large and clear 8” TFT display, glove-enabled

    Measuring units XT50-M / XT50-S

    The XT50 measuring units are ATEX approved for use potentially explosive environments. The units utilize dot-type laser and 1-axis square PSD surfaces. A state-of-the-art OLED display shows the angle of the unit, making it easier to position it on the shaft. IP66 and 67, dust- water- and shockproof. Heavy-duty battery for very long operating times. Built-in wireless technology.


    • Built-in wireless technology. Integrated rechargeable battery. 
    • TruePSD technology with unlimited resolution for greatest accuracy.
    • Dual laser beams and PSDs.
    • Sturdy aluminium body. IP66/67 design.
    • ATEX approved.
    • OLED display shows the angle of the unit.
    • Slideable target.
    • 20 hours operating time.
    image description
    1. Laser angle adjustment
    2. Charger connector
    3. Locking knob
    4. Slidable target/dust cover
    5. OLED display: battery status/unit angle
    6. Extendable stainless steel rods
    7. Chain tightening knob
    8. PSD aperture
    9. Laser aperture


      • 1 Measuring unit XT50-M
      • 1 Measuring unit XT50-S
      • 2 Shaft brackets with chains and rods
      • 4 Rods 75 mm [2.95”]
      • 2 Rods 120 mm [4.72"]
      • 2 Extension chains 900 mm [35.4"]
      • 1 Measuring tape 3 m [9.8']
      • 1 Rod tool
      • 1 Charger (100–240 V AC)
      • 1 DC split cable for charging
      • 1 Quick reference manual
      • 1 Cleaning cloth for optics
      • 1 USB memory with manuals
      • 1 Carrying case Ex/ATEX
      • 1 Display unit ecom Tab-Ex®
      technical data  

      Technical Data

      Display Unit

      ecom Tab-Ex®
      Type of display/size
      TFT 8" colour screen
      Operating temperature
      -20–50 °C
      Bluetooth® LE4.0 Wireless technology, WiFi
      3 Mp with flash (rear), 1.3 Mp (front)
      WxHxD: 162x256x33 mm [6.4x10.1x1.3"]
      Weight (without batteries)
      1250 g [2.75 lbs]
      Operating time
      Up to 11 h continuously
      Operating system
      Android™ 5.1.1
      Ex classification
      II 2 GD Ex db ia op is IIC T5 Gb, -20°C ≤ Ta ≤ +50°C
      Ex certificate number
      Sira 15 ATEX 1205X, IECEx SIR 15.0075X

      Measuring Units

      XT50-M / XT50-S
      BT wireless technology
      Type of detector
      1 axis TruePSD 20x20 mm [0.79x0.79"]
      0.001 mm [0.05 mils]
      Measurement accuracy
      ±1µm ±1%
      Measurement range
      Up to 20 m [66 feet]
      Type of laser
      Diode laser
      Laser wavelength
      635–670 nm
      Laser class
      Safety class 2
      Laser output
      <1 mW
      Electronic inclinometer
      0.1° resolution
      Environmental protection
      IP class 66 and 67
      Operating temperature
      -10–50 °C
      Storage temperature
      -20–50 °C
      Relative humidity
      Housing material
      Anodized aluminium + PC/ABS + TPE
      WxHxD: 76x76.5x50.9 mm [3.0x3.0x2.0"]
      316 g [11.1 oz]
      OLED display
      128x64 pixels
      Operating time
      Up to 20 h continuously
      Ex classification
      II 2 G Ex ib op is IIC T4 Gb, -10°C ≤ Ta ≤ +50°C
      Ex certificate number
      Presafe 17 ATEX 10552X, IECEx PRE 17.0049X


      You can find product brochures and manuals in pdf format here. They contain further information about our products. For software, see Lifecycle support > Software download.


      XT-series Manual


      Product Catalogue rev. 20
      XT550 brochure

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      A couple of months ago, we were hired to perform an alignment on a motor/gearbox setup with a 9-foot spacer coupling in between. The obstacle this time around was that the spacer coupling was going through a square steel support beam. Read more


      Easy-Laser measurement systems are already extremely flexible in their standard form. By using clever accessories, you can adapt the systems for your own needs, now and in the future as your measurement requirements change. It is cost-effective.