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Reference Manual
00809-0100-4002, Rev BB
November 2012
Rosemount 1199
5-4
FILL FLUID
SPECIFICATIONS –
SYLTHERM XLT
SILICONE
Syltherm XLT
Description
Syltherm XLT is a low viscosity silicone fluid used specifically for cold
temperature applications. It has been reported to work satisfactorily for
cryogenic applications down to –87 °C (–125 °F). The published freeze point
for Syltherm XLT is –111 °C (–168 °F).
Temperature Limits
At Atm Pressure
-73 to 149 °C (-100 to 300 °F)
Max Temp at Min. Pressure
See vapor-pressure curve
Viscosity at 25 °C (77 °F)
1.6 cs
Specific Gravity @ 25 °C (77 °F)
0.85
Coefficient of Thermal Expansion
0.001198 cc/cc/C (0.00066 cc/cc/F)
Chemical Name
Dimethyl Polysiloxane
CAS Number
063148-62-9
Содержание 1199
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