Mounting Requirements; Pay Attention To The Temperature For Devices With A Pfa Coating (Conductive) - Endress+Hauser Liquiphant FTL64 Operating Instructions Manual

Liquiphant FTL64
Endress+Hauser
 3 Installation examples for a vessel, tank or pipe
1 Vessel insulation (example with temperature spacer)
If process temperatures are high, the device should be included in a vessel insulation system to prevent the
electronics from heating as a result of thermal radiation or convection.
5.1

Mounting requirements

NOTICE
Scratches or impacts damage the coated surface of the device.
‣
Ensure the device is handled properly and professionally during all mounting work.
5.1.1 Pay attention to the temperature for devices with a PFA
coating (conductive)
The difference in temperature between the outer and inner side of the flange may not
exceed 60 °C (140 °F).
If necessary, use external insulation.
1
 4 Difference in temperature between outer and inner side of flange
1 Insulation
A Temperature of flange, outer side
B Temperature of flange, inner side, for PFA (conductive) maximum 230 °C (446 °F)
C Difference in temperature for PFA (conductive) maximum 60 °C (140 °F)
1
A
-
B
B
Mounting
A0042329
A = C
C
A0042298
11