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Installation Guidelines
3.1 Safety Information
LDS 6
Operating Instructions, 01/2009, A5E00295894-05
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Approval
The concept of the Ex approval is that the central unit is unchanged from a standard unit and
that a special Ex sensor pair (CD 6 Ex) is used in the hazardous zone. In addition to this an
explosion protection barrier is added before entry into the hazardous zone. An absolute
condition for the approval is that the equipment is set up according to the drawing, ADM
3040 3050, please refer to the separate ATEX manual for LDS 6.
The protection is as follows:
Cross Duct Sensor -
II 1G Ex ia IIC T4
II 1D IP65 T135 °C.
Central (Barrier) Unit -
II (1)G Ex [ia] IIC
II (1)D Ex [iaD].
● Equipment Group: Group II - Surface.
● Equipment Category: Category 1G D - Zone 0. Flammable material can be present
continuously, frequently or for long periods, in gas and dust.
● Type of protection: EEx ia. The equipment present in the hazardous area is intrinsically
safe.
● Explosion group: IIC. This corresponds to a gas group containing Acetylene and
Hydrogen.
● Temperature class: T4. The maximum surface temperature on the equipment is 135 °C
(275 °F) and the ignition temperature of the gas or vapor is between 135 °C (275 °F) and
200 °C (392 °F).
● The sensor housing protection is IP65 and the ambient temperature must be between
-30 °C (-22 °F) and +60 °C (140 °F) .
Liability
Following commissioning, the total responsibility is with the owner.