Siemens SITRANS L Series Operating Instructions Manual page 16

Installing/mounting
2.8 Manufacturing of the extension tube
①
②
③
X
16
free from burrs
*Version with R 1" thread
*Version with NPT 1" thread
same as the other end
Pipe length X = L - 190 mm (7.5")
Min. L = 250 mm (9.9")
Max. L = 1,500 mm (59") with pos. "Extension length 1.500 mm (59")"
or 4,000 mm (157") with pos. "Extension length 4.000 mm (157")"
Note: L is the total extension length.
Thread R 1" EN 10226
Effective thread length: 14.5 .. 19.1 mm (0.57 to 0.75")
(dimension L1 according to standard EN 10226)
Thread 1" NPT ANSI B 1.20.1
Effective thread length: 17.3 +2mm (0.68 +0.08")
(dimension L2 according to standard ANSI B 1.20.1)
*The thread on the Extension tube must be manufactured
either with R 1" or 1" NPT. This is dependent on the selected
version in pricelist pos. "Process connection" and pos. "Ap-
provals". For more details, see Customer supplied pipe exten-
sion details. (Page 45)
Operating Instructions, 05/2019, A5E44908583-AB
SITRANS LVS300