
2.10
Thermal optimizer: proper use and applications
The thermal optimizer keeps fill fluids from gelling in cold
ambient temperatures by using high process temperatures to
heat the transmitter and capillary.
High temperature silicone fill fluid has a low temperature limit in
ambient conditions below 32 °F (0 °C). The thermal optimizer
allows direct mounting down to –94 °F (–70 °C).
Figure 2-10: Fill Fluid Temperature Limits
Thermal optimizer with Silicone 704
Thermal optimizer with Silicone 705
212 °F (100 °C)
176 °F (80°C)
140 °F (60 °C)
104 °F (40 °C)
68 °F (20 °C)
32 °F (0 °C)
-4 °F (-20 °C)
-40 °F (-40 °C)
-76 °F (-60 °C)
-112 °F (-80 °C)
212 °F (100 °C)
176 °F (80°C)
140 °F (60 °C)
104 °F (40 °C)
68 °F (20 °C)
32 °F (0 °C)
-4 °F (-20 °C)
-40 °F (-40 °C)
-76 °F (-60 °C)
-112 °F (-80 °C)
32
°F (0 °C)
122
°F (50
°C)
302
°F (150
°C)
482
°F (250
°C)
662
°F (350
°C)
842
°F (450
°C)
401
°F (205
°C)
185
°F (85
°C)
185 °F (85 °C)
599
°F (315
°C)
-58 °F (-50 °C)
91 °F (33 °C)
Process temperature °F (°C)
Ambient temperature °F (
°C)
Ambient temperature °F (
°C)
Process temperature °F (°C)
122
°F (50
°C)
302
°F (150
°C)
482
°F (250
°C)
662
°F (350
°C)
842
°F (450
°C)
185
°F (85
°C)
185 °F (85 °C)
-58 °F (-50 °C)
401
°F (205
°C)
-69 °F (-56 °C)
-76 °F (-60 °C)
68
°F (20
°C)
698
°F (370
°C)
68 °F (20 °C)
68 °F (20 °C)
77 °F (25 °C)
Remote Seal Systems
Reference Manual
May 2020
00809-0100-4002
20
Rosemount DP Level
Summary of Contents for Rosemount 1199
Page 4: ...4 ...
Page 8: ...Introduction Reference Manual May 2020 00809 0100 4002 8 Rosemount DP Level ...
Page 22: ...Remote Seal Systems Reference Manual May 2020 00809 0100 4002 22 Rosemount DP Level ...
Page 74: ...Installation Reference Manual May 2020 00809 0100 4002 74 Rosemount DP Level ...
Page 92: ...Fill Fluids Reference Manual May 2020 00809 0100 4002 92 Rosemount DP Level ...