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3.1 Considerations for ST 3000 Transmitter, Continued
Temperature limits
Table 5 lists the operating temperature limits for the various types of
transmitters with silicone fill fluids. See transmitter specifications for
temperature limits of transmitter with alternative fill fluids.
Table 5 Operating Temperature Limits (Transmitters with Silicone Fill Fluids)
Transmitter Type and Model Ambient Temperature Process Interface Temperature
°C °F °C °F
Draft Range STD110 -40 to 70 -40 to 158 -40 to 70 -40 to 158
Differential Pressure STD125
STD120, STD130, STD170
STD904, STD924,
STD930, STD974
-40 to 85
-40 to 93
-40 to 85
-40 to 185
-40 to 200
-40 to 185
-40 to 85
-40 to 125
-40 to 125
-40 to 185
-40 to 257
-40 to 257
Gauge Pressure
STG140, STG170, STG180,
STG14L, STG17L, STG18L
STG14T
STG93P
STG944, STG974
STG90L, STG94L,
STG97L, STG98L
-40 to 93
-40 to 93
-15 to 65
-40 to 85
-40 to 85
-40 to 200
-40 to 200
5 to 149
-40 to 185
-40 to 185
-40 to 125
-40 to 150 †
-15 to 95 ††
-40 to 125
-40 to 110
-40 to 257
-40 to 302 †
5 to 203 ††
-40 to 257
-40 to 230
Absolute Pressure STA122 -40 to 93 -40 to 200 See Specification Sheet
STA140 -40 to 93 -40 to 200 -40 to 80 -40 to 176
STA922 -40 to 85 -40 to 185 See Specification Sheet
STA940 -40 to 85 -40 to 185 -40 to 80 -40 to 176
Flange Mounted
STF128, STF132, STF924,
STF932
Pseudo-Flanged Head
STF12F, STF13F, STF92F,
STF93F
STF14F
Gauge Pressure Flange Mount
STF14T
-40 to 93
-40 to 93
-40 to 85
-40 to 93
-40 to 200
-40 to 200
-40 to 185
-40 to 200
-40 to 175
-40 to 93
-40 to 85
-40 to 150 †
-40 to 350
-40 to 200
-40 to 185
-40 to 302 †
Remote Diaphragm Seals
STR12D, STR13D, STR14G,
STR17G, STR14A
See Specification Sheet
See Specification Sheet
STR93D, STR94G -40 to 85 -40 to 185 See Specification Sheet
† Process temperatures above 125 °C (257 °F) require a reduction in the maximum ambient temperature as follows:
Process Temperature Ambient Temperature Limit
150 °C (302 °F) 50 °C (122 °F)
140 °C (284 °F) 60 °C (140 °F)
125 °C (257 °F) 85 °C (185 °F)
†† Process temperatures above 65 °C (149 °F) require a 1:1 reduction in maximum ambient temperature.
NOTE: For transmitters with local meter option see Table A-2.
NOTE: Transmitters with other fill fluids (CTFE, Neobee, Etc.) have different Operating Temperature Limits.
For
more specific information, refer to the appropriate Specification and Model Selection Guide or transmitter nameplate
18 ST 3000 Release 300 Installation Guide 2/05