Sitrans p measuring instruments for pressure, Remote seals for transmitters and pressure gages, Technical description 2/154 – Siemens SITRANS P User Manual
Page 154
SITRANS P measuring instruments for pressure
Remote seals for transmitters and pressure gages
Technical description
2/154
Siemens FI 01 · 2009
2
Temperature errors of diaphragm seals with connection to differential pressure transmitters (double-sided)
Remarks:
• Values apply for the filling liquids silicone oil M5, silicone oil M50, high-temperature oil, halocarbon oil and food oil (FDA listed)
• Half the values apply to glycerin/water mixture as the filling liquid
• Values apply to stainless steel as the diaphragm material.
Nominal diameter/
design
Diaphragm
diameter
Temperature error
of remote seal
Temperature error of cap-
illary
Temperature error
of process
flange/connec-
tion spigot
Recommended
min. spans
(guidance val-
ues, observe
temperature
error)
mm
(inch)
mbar/
10 K
(psi/
10 K)
mbar/
(10 K
⋅ m
Kap
)
(psi/
(10 K
⋅ m
Kap
))
mbar/
10 K
(psi/
10 K)
mbar
(psi)
Sandwich
design or with
flange to
EN 1092-1
DN 50 without tube
59
(2.32)
0.3
(0.0043) 0.3
(0.0045)
0.3
(0.0045)
250
(3.626)
DN 50 with tube
48
(1.89)
1.26
(0.018)
1.7
(0.025)
1.7
(0.025)
250
(3.626)
DN 80 without tube
89
(3.50)
0.05
(0.001)
0.05
(0.001)
0.05
(0.0007)
50
(0.725)
DN 80 with tube
72
(2.83)
0.24
(0.004)
0.17
(0.003)
0.17
(0.003)
100
(1.45)
DN 100 without tube
89
(3.50)
0.1
(0.002)
0.07
(0.001)
0.07
(0.001)
50
(0.725)
DN 100 with tube
89
(3.50)
0.1
(0.002)
0.07
(0.001)
0.07
(0.001)
50
(0.725)
DN 125 without tube
124
(4.88)
0.05
(0.001)
0.03
(0.0004)
0.03
(0.0004)
20
(0.29)
DN 125 with tube
124
(4.88)
0.05
(0.001)
0.03
(0.0004)
0.03
(0.0004)
20
(0.29)
Sandwich
design with
flange to ASME
B16.5
2 inch without tube
59
(2.32)
0.3
(0.0043) 0.3
(0.0043)
0.3
(0.0045)
250
(3.626)
2 inch with tube
48
(1.89)
1.26
(0.018)
1.7
(0.025)
1.7
(0.025)
250
(3.626)
3 inch without tube
89
(3.50)
0.05
(0.001)
0.05
(0.0007)
0.05
(0.0007)
50
(0.725)
3 inch with tube
72
(2.83)
0.24
(0.004)
0.17
(0.003)
0.17
(0.003)
100
(1.45)
4 inch without tube
89
(3.50)
0.1
(0.002)
0.07
(0.001)
0.07
(0.001)
50
(0.725)
4 inch with tube
89
(3.50)
0.1
(0.002)
0.07
(0.001)
0.07
(0.001)
50
(0.725)
5 inch without tube
124
(4.88)
0.05
(0.001)
0.03
(0.0004)
0.03
(0.0004)
20
(0.29)
5 inch with tube
124
(4.88)
0.05
(0.001)
0.03
(0.0004)
0.03
(0.0004)
20
(0.29)
Remote seal
with union nut to
DIN 11851
DN 50
52
(2.05)
1
(0.015)
0.83
(0.012)
0.83
(0.012)
250
(3.626)
DN 65
59
(2.32)
0.7
(0.010)
0.67
(0.010)
0.67
(0.010)
250
(3.626)
DN 80
72
(2.83)
0.24
(0.004)
0.17
(0.003)
0.17
(0.003)
100
(1.450)
Remote seal
with threaded
socket to
DIN 11851
DN 50
52
(2.05)
1
(0.015)
0.83
(0.012)
0.83
(0.012)
250
(3.626)
DN 65
59
(2.32)
0.7
(0.010)
0.67
(0.010)
0.67
(0.010)
250
(3.626)
DN 80
72
(2.83)
0.24
(0.004)
0.17
(0.003)
0.17
(0.003)
100
(1.450)
Clamp connec-
tion
2 inch
40
(1.57)
1
(0.015)
2.5
(0.036)
2.5
(0.036)
2000
(29.01)
2½ inch
59
(2.32)
0.7
(0.010)
0.67
(0.010)
0.67
(0.010)
250
(3.626)
3 inch
72
(2.83)
0.24
(0.004)
0.17
(0.003)
0.17
(0.003)
100
(1.450)
© Siemens AG 2008