Siemens Pointek CLS200 Operating Instructions Manual page 106

Hazardous area installation
D.1 Notes for use in hazardous locations
Versions with cable gland / blanking element mounted by default
Below-mentioned cable diameters and tightening torques of the nut resp. blanking element
shall be observed for the installation.
• Cable gland M20x1.5 (Dust Ignition proof, Intrinsically Safe, Type of protection n)
– Cable diameter: 6 mm to 12 mm
– Tightening torque - depending on the cable used and therefore to be determined by
• Cable gland M20x1.5 (Flameproof)
– Cable diameter: bedding 3.1 mm to 8.6 mm / overall 6.1 mm to 13.1 mm
– Tightening torque - number of turns depends on overall cable diameter of the used
• Blanking element M20x1.5 (all versions)
– Tightening torque: 32.5 Nm
Electrostatic charge
The user shall ensure that the equipment is not installed where it may be subjected to
external conditions which might cause a build-up of electrostatic charge on non-conducting
surfaces.
Impact / Friction
Because the enclosure and optionally the process connection of the equipment is made of
aluminum alloy, the apparatus must be installed so that even in the event of rare incidents,
an ignition source due to impact or friction between enclosure and iron/steel is excluded,
when used in potentially explosive atmosphere requiring apparatus of equipment 1G.
Flameproof joints
The flameproof joints are not intended to be repaired.
Transient limitation for type of protection n
A transient protection device shall be used, set at a level not exceeding 140% of the peak
related voltage of 85 V.
Ambient and process temperature range
The relation between the ambient and process temperature ranges and the surface
temperature or temperature class is shown in the thermal data tables.
Max. permitted temperature close to the enclosure
If the process temperature exceeds the max. permissible ambient temperature, the max,
resulting temperature at the connection of the sensor head shall not exceed the related max.
permissible ambient temperature, taking the worst case conditions into account. This shall be
verified by measurement when installed.
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the user
cable (e.g. 1 turn/cable diameter 12.5 mm to 5.5 turns/cable diameter 6.5 mm).
Pointek CLS200/CLS300 digital
Operating Instructions, 05/2021, A5E47904060-AA