THERMOSALD ISC – MAINTENANCE & OPERATIONS MANUAL Rev. 2010 / 03
(Includes all previous models)
Manuale cod.: 3ES080x_V5.1_MU_EN Page Nr. 13 Tot. Nr . 47
• CALCULATION OF THE USABLE BAND LENGTH
It’s the length of the part not coppered; it’s calculated by the following formula:
L-UTIL = LTOT – (LRAM x 2) – LRAMC)
Usable length: L-UTIL = ……………………. [mm]
• CALCULATION OF THE BAND SECTION
The band section is calculated by the following formula:
SEZ = LARG x SP in mmq
Section: SEZ = ……………………. [mmq]
3.2 - CALCULATION OF SEALING BAND RESISTANCE
If You USE AN ORIGINAL band 3E included in the underlying tables, You can calculate band resistance using the
tables and applying the following formula:
1 – single band = R-BAND = R0 x L-UTIL [ mt. ]
2 – 2 bands in series = R-BAND = R0 x L-UTIL x 2 [ mt. ]
3 – 2 bands in parallel = R-BAND = R0 x L-UTIL / 2 [ mt. ]
R0 = Specific resistance of the band [ Ω
ΩΩ
Ω / mt ]
L – UTIL = Usable length of the band [ mt. ]
If You DON’T USE AN ORIGINAL band 3E included in the underlying tables, You must measure the band resistance
directly on te contact with a precision instrument.
Resistance: R-BAND= ……………………. [ Ω
ΩΩ
Ω ]