The XT550 system is ATEX Zone 1 classified. It is an advanced dot dual laser system...


Easy-Laser XT550

The Easy-Laser XT550 EX-rated system is developed for hazardous areas. The XT550 is also easily operated through our free XT Alignment App. It is an advanced measurement system for alignment of horizontal and vertical/flange mounted machines. ​It has all the functions of the XT660. Please see the specifications of the XT660 here.

It comes with Easy-Laser’s dot laser technology and it allows you to measure large machinery and longer spans. The measuring units are approved in accordance with the latest ATEX directive. It is rated for ATEX Zone 1 and up. Also rated both IP66 and IP67 water and dust proof.


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

Click to Learn More  about our other Alignment Products

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What Does Ex Mean?

System Parts

  • 1 Measuring unit XT50-M
  • 1 Measuring unit XT50-S
  • 2 Shaft brackets with chains and rods
  • 4 Rods 60 mm
  • 2 Rods 120 mm
  • 2 Extension chains 900 mm long
  • 1 Measuring tape 3 m
  • 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®


Measuring units XT50-M / XT50-S
Type of detector 1 axis TruePSD 20×20 mm [0.79×0.79″]
Communication BT wireless technology
Battery type Heavy duty Li Ion chargeable
Operating time Up to 20 h continuously
Resolution 0.001 mm [0.05 mils]
Measuring errors <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 10–95%
Housing material Anodized aluminium + PC/ABS + TPE
Dimensions WxHxD: 76×76.5×50.9 mm [3.0×3.0x2.0″]
Weight 316 g [11.1 oz]
OLED display 128×64 pixels
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


Display unit ecom Tab-Ex®
Type of display/size TFT 8″ colour screen
Operating temperature 20–50 °C
Communication Bluetooth® LE4.0 Wireless technology, WiFi
Camera 3 Mp with flash (rear), 1.3 Mp (front)
Dimensions WxHxD: 162x256x33 mm [6.4×10.1×1.3″]
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


Charging cable (splitter cable) Length 1 m [39.4″]
Brackets etc.
Type V-bracket for chain, width 18 mm [0.7″]
Shaft diameters 20–150 mm [0.8–6.0″]
With extension chain, diameters up to 450 mm [17.7″]
Bracket material Anodised aluminium
Chain material Stainless steel
Rod length 120 mm, 60 mm [4.72″, 2.36″] (extendable)
Rod material Stainless steel



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