XT550 – Ex/ATEX Shaft alignment

The Easy-Laser® XT550 Shaft 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.​

With XT550 you can carry out the following:

  • Align the machine
  • Check base twist
  • Check bearing play
  • Check soft foot
  • Document and share the results

The XT550 alignment system has all the features of the XT660 with one major difference – the measuring units are intrinsically safe, which allows the system to be used in potentially hazardous areas. 

The system 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.

Choose your own display unit

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 XT display unit. 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 XT display unit 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.

Get to know Generation XT

Measurement programs

The featured programs below are the most common used with this system. Please click here for a complete overview of possibilities. *=accessories needed

Horizontal machines

The user interface is intuitive and guide 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.

Display Unit

ecom Tab-Ex® 3
Type of display/size
TFT 8″ colour screen
Operating temperature
-20–55 °C
Bluetooth® 5.0 Wireless technology, WiFi
13 Mp with flash (rear), 5 Mp (front)
WxHxD: 263x162x26 mm [10.3×6.4×1.0″]
Weight (without batteries)
1100 g [2.42 lbs]
Operating time
Up to 11 h continuously
Operating system
ATEX/UKCA Ex classification
II 2G Ex db ia IIC T6 Gb IP64
II 2D Ex ia tb IIIC T80°C Db
-20°C ≤ Ta ≤ +55 °C
IECEx classification
Ex db ia IIC T6 Gb IP64
Ex ia tb IIIC T80°C Db
-20°C ≤ Ta ≤ +55°C
Ex certificate number
EPS 22 ATEX 1055X, IECEx EPS 22.0014X, EPS 22 UKEX 1055X

Measuring Units

XT50-M / XT50-S
BT wireless technology
Type of detector
1 axis TruePSD 20×20 mm [0.79×0.79″]
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
630-680 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: 76×76.5×50.9 mm [3.0×3.0x2.0″]
316 g [11.1 oz]
OLED display
128×64 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

Easy Laser Video 01

XT Horizontal Shaft Alignment program using the XT440 and XT770 measuring units.

How to perform shaft alignment in 5 steps

Five steps to quicker and easier shaft alignment with Easy-Laser laser alignment systems.

  • 05-0835 XT Manual 9.0.0 EN_lores.pdfDownload

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