26 Chapter 4
The following equation is based on applications of the ideal gas law.
m
m
P
3.101
11.2115.273
T15.273
)FlowStandard(FlowVolumetric
Choose U to select the user standard temperature (used in place of
21.11°C) and user pressure (used in place of 101.3 kPa).
Choose UT (User Temperature) to select the standard temperature
and the pressure used is actual pressure.
Choose UP (User Pressure) to select the standard pressure and the
temperature used is actual temperature.
Reference commands SSTnn.nn and SSPnnn.nn for how to set user
standard temperature and pressure conditions.
After the command is processed, an acknowledge sequence of “OK”
<CR><LF> is sent. If the command generated an error, instead of
“OK” <CR><LF> being sent, an error code of “ERRn” <CR><LF> will
be sent. See Appendix A for a list of possible error codes.
SSTnn.nn
Backwards compatible with Series 4000
/
4100 flow meters.
Set user standard temperature.
Denotes the set standard temperature command.
Denotes the user standard temperature in degrees C.
Example: to set to 37 degrees C send SST37.00.
SSPnnn.nn
Backwards compatible with Series 4000 / 4100 flow meters.
Set user standard pressure.
Denotes the set standard temperature command.
Denotes the user standard pressure in kPa.
Example: to set standard pressure to 120kPa send SSP120.00
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