Note
Loss of type of protection
Changes in the ambient conditions can loosen the component.
• As part of the recommended maintenance intervals: Check the compression fitting for tight
fit and tighten, if necessary.
D.3
Technical specifications of accessory part
Technical specifications sealing plug and thread adapter
Sealing plug suitable for types of protection
Explosion-proof enclosure "d" of groups IIA, IIB, IIC
Dust protection by enclosure "t"
Standard compliance
The components meet Directive 94/9. They meet the requirements of
standards IEC/EN 60079-0; IEC/EN 60079-1; IEC/EN 60079-31.
Explosion protection
• Gas explosion protection
II2G Ex d IIC
• Dust explosion protection
II1D Ex t IIIC
Certificates
IECEx TUN 13.0022 U
TÜV 13 ATEX 121710 U
Material for sealing plug / thread adapter
Stainless steel
Material for seal
Vulcanized fiber or Victor Reinz AFM 30
Ambient temperature range
-40 ... +100 °C (-40 ... +212 °F)
For "Ex d" type of protection:
Required wall thickness for tappings
10 mm
Torque
• For thread size M20 x 1.5
65 Nm
• For thread size M25 x 1.5
95 Nm
• For thread size ½-14 NPT
65 Nm
Width A/F for thread size M20 x 1.5
27
Width A/F for thread size M25 x 1.5
30
Key size for thread size ½-14 NPT
10
Accessory part sealing plug / thread adapter
D.3 Technical specifications of accessory part
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
230
Operating Instructions, 05/2020, A5E41864807-AB