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2.1  Intended use
In line with its identification, this magnetostrictive linear 
position sensor BTL is suitable as electrical equipment  
for use in gas and dust explosive areas. When installed in  
a machine or system, the BTL forms a position measuring 
system in conjunction with a controller or evaluation unit 
and may only be used for this purpose.
When selecting the electrical equipment, the person 
setting up the machine or system is responsible for 
assessing its suitability for the planned area of application. 
The information in the user’s guide and other applicable 
safety regulations and provisions must be observed during 
set-up.
The operator of the machine or system must ensure that 
the BTL is applied under the permissible operating 
conditions in line with the information in this user’s guide 
and in compliance with the applicable safety regulations 
and provisions.
Unauthorized interventions, non-permissible use, or 
application outside the permissible operating conditions 
will result in the loss of warranty and liability claims against 
the manufacturer.
2.2  Reasonably foreseeable misuse
The BTL is not approved for use at locations classified as 
Zone0 under the North American guidelines.
2.3  Safety measures
The persons setting up and operating the machine or 
system must take steps to ensure that a malfunction in the 
BTL will not result in hazards to persons or equipment. 
This includes the installation of additional safety limit 
switches, emergency shutoff switches and maintaining the 
permissible ambient conditions. If there are any indications 
of damage or malfunctions, the BTL must be immediately 
taken out of operation and secured against unauthorized 
use.
Even with correct explosion protection, residual risks 
remain that could pose a hazard to persons and systems 
when the device is correctly operated or if there are any 
fault states.
2.4  Approvals, standards, and conformity
The CE Mark verifies that our products 
meet the requirements of the current 
EMC Directive as well as the ATEX 
Directive. 
Additional information on directives, approvals and 
standards can be found at www.balluff.com on 
the product page.
The linear position sensor meets the requirements of the 
following product standard:
–  EN61326-2-3 (noise immunity and emission)
Emission tests:
–  RF emission  
EN55011
Noise immunity tests:
–  Static electricity (ESD)  
EN 61000-4-2
Severity level 3
–  Electromagnetic fields (RFI)  
EN 61000-4-3
Severity level 3
–  Electrical fast transients (burst)  
EN 61000-4-4
Severity level 3
–  Surge  
EN 61000-4-5
Severity level 2
–  Conducted interference induced by 
high-frequency fields  
EN 61000-4-6
Severity level 3
–  Magnetic fields  
EN 61000-4-8
Severity level 4
The BTL with identification 
 II 1/2 GD Ex db IIC T6/T5 Ga/Gb Ta –50…+70°C (T6) 
–50…+80°C (T5) for gases and 
 II 1/2 GD Ex ta IIIC T85°C/T100°C Da IP68 Ta 
–50°C…+70°C (T85) –50…80°C (T100) for flammable 
dusts fulfills the requirements for electrical equipment for 
explosive areas in accordance with the following 
standards:
–  EN60079-0:General requirements
–  EN60079-1:Ignition protection “d”
–  EN 60079-26: Equipment with equipment protection 
level (EPL) Ga
–  EN 60079-31: Ignition protection “t”
Compliance is proven through the EC type examination 
certificate SIRA 11 ATEX 1104X and a CE declaration of 
conformity.
The BTL is certified under certificate 
number IECEx SIR 11.0048X.
The current version can be found under 
www.iecex.com
Class I Zone 1 A Ex db IIC T* Ga/Gb  
T6 Ta –50…70°C, T5 Ta –50…80°C 
Class I Zone 1 Ex db IIC T* Gb T6 Ta 
–50…70°C, T5 Ta –50…80°C 
Class I, Division 1, Groups A,B,C,D 
Class II, Division 1, Groups E,F,G; 
Class III T6 Ta –50°…70°C, T5 Ta 
–50…80°C Type 4X/6P; IP68
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EX safety notes
BTL7-A/C/E/G5_ _-M_ _ _ _-J-DEXC-TA12
Magnetostrictive Linear Position Sensor – Rod Style
Type of protection “db” and “ta”
Flameproof enclosure