Siemens SITRANS T Series - Accessory Part Sealing Plug; Thread Adapter; Intended Use of Accessory Part; Safety Instructions for Accessory Part

Accessory part sealing plug / thread adapter
D
D.1 Intended use of accessory part
The sealing plug and the thread adapter (components) can be used for installation in electrical
equipment of 󹪞ameproof" "Ex d" type of protection of groups IIA, IIB, IIC as well as dust protection
by enclosure "Ex t" type of protection.
D.2 Safety instructions for accessory part
WARNING
Incorrect assembly
• The component can be damaged or destroyed or its functionality impaired through
incorrect assembly.
– Mount the component using a suitable tool. Refer to the information in Chapter
"Technical speci󹪝cations of accessory part (Page 230)", for example, torques for
installation.
• For "Explosion-proof Ex d" type of protection: To ensure an engagement depth of 8 mm, the
enclosure must have a wall thickness of at least 10 mm.
Improper modi󹪝cations
Danger to personnel, system and environment can result from modi󹪝cations and repairs of the
component, particularly in hazardous areas.
• Any modi󹪝cation which deviates from the delivery state is not permitted.
Loss of enclosure type of protection
IP protection is not guaranteed without sealant.
• Use a suitable thread sealant.
• If you are using the component in type of protection dust protection by enclosure "Ex t", use
the supplied sealing ring (①, 󹪝gure in Chapter "Dimensional drawings of accessory part
(Page 231)").
Unsuitable 󹪞uids in the environment
Danger of injury or damage to device.
Aggressive media in the environment can damage the sealing ring. Type of protection and
device protection may no longer be guaranteed.
• Make sure that the sealing material is suitable for the area of use.
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB 229